Showing posts with label wastewater. Show all posts
Showing posts with label wastewater. Show all posts

Tuesday, September 21, 2010

Help Fund Pilar's Nyegen Project!


Though the eponymous hero of this blog can no longer volunteer his own ditch–digging skills, the brave activists of Operation Sphincter Plug continue their valiant effort to rid the world of gastrointestinal disease. Continuing this imperative work in another village down the road from Sanadougou is Peace Corps Volunteer Pilar Lyons of Pine Bush, New York. Pilar is a civil engineer with a special zeal for water and wastewater infrastructure!

Pilar’s village is much smaller than Sanadougou – only about one thousand people; however, it has even more dire sanitation needs. This particular Minianka village lies atop soft fertile soils adjacent to a series of seasonal ponds with a very high water table – only 1.5 meters below ground in some places. Though this is a prime location for agriculture, since the water table is so high and the soft soils are not supported by solid rock, their “traditional latrines” built from mud and logs often rot and collapse while some unlucky person is squatting on top of them. Even worse, the high water table and soft soils mean that the groundwater which feeds this village's wells is particularly susceptible to contamination from the unlined latrine pits; in other words, their drinking water is directly polluted with human fecal matter. Without any means of containing wastewater, raw sewage flows out into standing puddles in the street which serve as fertile breeding grounds for malaria-spreading mosquitoes, as well as filth flies and cockroaches which carry giardia cysts and amoebas into the people's food and drinking water.

Inadequate sanitation in a Minianka village is not just something icky – it is the reason why giardia, dysentery, hookworm and malaria are absolutely endemic in this society, it why two out of every five children die before the age of five, it is why so many adults cannot work in the fields because they are sapped and emaciated by dysentery. Without the monetary wealth to purchase reinforced concrete and plastic tubing necessay to build adequate sanitation infrastructure, these poor Miniankas are mired in a cycle of filth, disease and poverty.

A few months before I packed my bags for Ameriki, Pilar biked over to the mud mansion of Xanadu with two masons from her village both named Daniel Dembele. They came to inspect the many dozens of nyegens and soak pits we had built throughout town. My main man Sidiki Sogoba taught the two Daniels how he assembles proper latrine platforms so that they could apply this trade in their own community. Sidiki doesn't mind the competition, because "We need so many skilled masons in every village in Mali. Even near Sanadougou, we need so much work that I could never do it all."



Now Pilar and the two Daniel Dembele’s are committed to organizing a village–wide sanitation campaign similar to the one which Sidiki and I conducted in Sanadougou. With your help, they would like to build 30 concrete latrines with lined latrine pits to safely store solid waste and a combintion of soak pits and infiltration trenches to safely store liquid waste underground in such a way that it does not directly contaminate the groundwater and it cannot be spread by flies and vermin to indirectly contaminate the food and water. The villagers who would like to participate in the program will have to procure all of the sand, rocks and gravel and either contribute or pay for all of the necessary labor; 27 percent of the total cost. Funds donated through the Peace Corps Partnership will go to pay for cement, rebar, plastic pipes, plastic sheets and a few masonry tools which the town does not have at their disposal.

If you would like to contribute to Pilar’s nyegen project, click here!

Ini’che kosibe kosibe!!!

Sunday, March 28, 2010

Trench Peacefare

This one trick pony has expanded his repertoire. As loyal readers should know, the people of Mali suffer from completely unnecessarily high rates of giardia, dysentery and explosive diarrhea because the raw sewage from their “traditional latrines” flows out into the streets and the entire population is exposed to the dangerous pathogens which cause these illnesses and continue the positive feedback loop by making their way into other people’s mouths. Sewage is both a danger to public health and also a necessary byproduct of human life itself, and so this blog’s eponymous hero is busy spending the prime years of his youth and your tax dollars building modern latrines equipped with concrete floors and soak pits: a rudimentary septic tank technology appropriate for cultures in this harsh Sahelian climate with few financial resources and building materials.


In the flat center of Sanadougou where I live, the water table lies almost perfectly uniformly between 7.5 meters below ground level at the peak of hot season and 4 meters below ground level after the groundwater has been recharged by 4 months of rainy season. In the center of Sanadougou where about 3,800 of the 4,400 permanent residents live, development-minded villagers have been digging soak pits 1 meter deep and varying in diameter (usually about 1 to 1.5 meters) depending on the number of people in their households and the volume of wastewater generated by their respective nyegens. Since the pathogens originating in wastewater can usually seep up to half a meter through hard-packed soil and sedimentary rock, the water table should never come closer than 2.5 meters to the sewage generated by these modern latrines and thus the groundwater consumed through wells and pumps should be adequately protected from direct contamination by human fecal matter.

However, even within the demarcated borders of Sanadougou there are some places where the soak pit is an inappropriate technology. Namely, there is an outlying neighborhood called Filablena which is significantly lower in elevation than the rest of the town and sits around a couple of large seasonal ponds. Here the water table varies between 5 meters below ground level at the peak of rainy season and 1.5 meters below ground level after rainy season.


The wells here are so shallow, and with less rock they are cut into nothing but soft soil which is much more permeable and conducive to groundwater flows. The pressure in a well is somewhat less than within the soil, so the water levels of wells are slightly higher than the water table; in Filablena during rainy season, the well water surface is only slightly less than a meter below ground level.


If we built 1 meter deep soak pits here like we have in the rest of Sanadougou, soak pits would in fact exacerbate the water sanitation problem by directly polluting the groundwater with raw sewage. That contaminated groundwater would then eventually make its way to people’s wells from which they get the bulk of their drinking water. The absolute worst-case scenario would be that contaminated water makes its way into the seasonal ponds and – though it probably wouldn’t be as obvious as the ones which form behind "traditional latrines" – render them into gigantic seasonal cesspools.

In Filablena we are just beginning to introduce a specialized technology: the infiltration trench. An infiltration trench serves the same function as a soak pit in that it contains the wastewater emitted from “traditional latrines” underground so that it cannot serve as a fertile breeding environment for filth flies and mosquitoes and cockroaches and a vector for all sorts of disease. It has to be able to store roughly the same volume of wastewater as a soak pit, but in an environment where the water table is prohibitively high an infiltration trench must be dug at a much smaller depth. In truth, the volume of a soak pit is only really important so long as it briefly stores wastewater before in seeps into the surrounding soil and rock; what is much more important is the surface area which determines the rate of discharge into the ground where it is safe and isolated from human water and food supplies. Where there has not been a lot of room to maneuver, we have solved this problem by simply reducing the depth of our soak pits and increasing the diameter accordingly.

Infiltration trenches take that ideal of minimal depth and maximum surface area even further. First I found a group of Filablenakaw interested in rebuilding their nyegens, measured their dimensions and assigned them lengths of plastic piping between 4 and 6 meters in length. Then we took an afternoon and pierced holes in them; we took a dozen large nails and placed their ends in the fire until they became red hot, and with protective work gloves we held pliers to hold the hot nails and melted lines of holes down the length of the pipes. With these hole-ridden pipes, wastewater should flow out over a more evenly distributed area and facilitate more rapid and less concentrated wastewater seepage into the soil.


Instead of small circular pits, Filablenakaw have been digging 4- to 6-meter long trenches which begin about 20 centimeters and eventually expand to a maximum depth of no more than 50 centimeters. We fill them in with rocks in such a way that the plastic pipe is on a gradual incline downwards and wastewater flows all the way down. Then we fill them with more rocks to keep the pipe stable, and cover the end of the pipe with a large flat rock to protect it from closing up.


Eventually we’re going to cover the trenches all up with plastic sheeting and cover them with the dirt that was dug up in the first place so that the sewage is contained underground, people and animals can walk over them without falling in, and every year or so homeowners can open up their infiltration trenches to inspect them and clean them as necessary.

However, there are some negative aspects of this process which make the construction of an infiltration trench an unattractive option. The biggest down point of this technology is that burning holes in the plastic pipes produces noxious fumes and is fairly harmful to anyone who isn’t wearing a respirator – I covered my face with soaking wet handkerchiefs while doing this work, and even then I came down with really bad headaches. Infiltration trenches also require more than 6 times as much plastic piping and sheeting than your average soak pit – but the plastic materials are so cheap compared to the cement that goes into the nyegens that the cost of an infiltration trench cannot be prohibitively expensive to anyone who is building or revamping an entire nyegen. Nevertheless, in communities sitting atop extremely high water tables, infiltration trenches are the most practical, cost-effective technology available for sound wastewater management. It is unlikely that we will be able to completely sanitize Filablena's latrines with such infiltration trenches, but my hope is that the few models which we are building will serve as an example for the entire community to one day safely contain their waste underground and away from the rest of the water supply - insh'allah.


Friday, November 6, 2009

Liquid Gold

One of my investment banker friends wrote to me musing how a poor country like Mali could escape its current stagnation; “Africa will need to diversify its economy away from commodities and raw materials into manufactured products if it has any hope of prospering”, he said, and when it comes to advancing from a subsistence agriculture economy to industrialization, “the bottom line is capital investment.” My friend saw the problem of African poverty in terms of underperforming GDP, a lack of final goods sold at market for currency to be saved in banks to accumulate with compound interest and re-invested so that capital can regenerate and expand unto itself. His view from Manhattan was fairly typical of anyone who makes their living in the trade of credits and debts, who views economic development in terms of developing a monetary economy and a self-contained industry of finance.

However, here in the muddy village of Sanadougou, most economic activity occurs in village without currency ever changing hands. Here the bulk of the population spends most of their labor planting and harvesting millet and rice and corn for their own family’s consumption. When the farming season is done, men spend the next largest chunk of their time building and rebuilding their own homes and granaries with mud and rocks and sticks that they find out in the fields. Women toil day in and day out drawing water and cooking and cleaning and taking care of their many, many children. Gross Domestic Product is such a grossly inadequate means of measuring economic development in this economy, for the food and housing and family networks which make up the bulk of the people’s tangible wealth are never sold as final goods on any marketplace.

The work done by Malian villagers that does count towards the monetary economy is decidedly secondary to food production, house construction and child rearing. In the relatively fertile Sikasso and the southern portions of Ségou, Koulikoro and Kayes provinces, surplus fields are allocated to farming cotton as a cash crop to be sold to the textile mills. In villages like Sanadougou, farmers produce such an excess of peanuts that they can sell them to urban populations who cook tigadegana. During rainy season women also gather shea nuts to cook a butter which is used to make soap and moisturizing cream. And of course all families raise some combination of cows, sheep, goats, chickens, guinea hens or rabbits for meat – only on holidays or weddings could most people ever justify slaughtering an entire goat, so villagers raise livestock mostly to sell to urban butchers. The money these villagers earn in exchange for these cash crops is what pays for their tea, sugar and gasoline. Altogether, the majority of such basic commerce is not transacted between villagers, for it consists of producing raw materials for the consumption of the urban merchant class or for manufacturing into finished goods by multinational corporations.

The most significant cash business in the traditional village economy which stays in the village for local consumption is the tilling of vegetable gardens. Most families have a small plot in their concession fenced in with sticks where they keep a papaya tree, a banana tree or two, and during rainy and cold seasons they can raise an annual patch of onions, tomatoes, lettuce, cabbage, sweet potatoes, yams or manioc. People tend to specialize in one or two crops and sell most of their output from garden season at market, but since tomatoes could never last the 57-kilometer motorcycle ride to the nearest city let alone pay for the cost of the gasoline, perishable produce can only be sold to other villagers. Fruits and vegetables are just about the only cash crops which are consumed in village and therefore insulated from the vicissitudes of global commodity prices and the distortion of First World subsidies. And thus in rural villages the most sustainable economic development takes the form of building gardens and improving their yields. Not only do improved garden yields increase monetary income, but since those yields are consumed in village they increase the population's intake of Vitamin A, Vitamin B, Vitamin C, potassium, phosphorus, etc. An investment in gardens is an investment in economic development and public health.

The World Bank and USAID and NGOs get this quite well. The Western bureaucracies of Third World development love investing in vegetable gardens because not only does it beget economic activity that can be measured by capital-centric indicators like GDP, but building vegetable gardens sounds less like impersonal business and more like good ol’ American humanitarianism.

Unfortunately, the Humanitarian-Industrial Complex understands the value of vegetable gardening only so much as it can be conducted from the confines of their air-conditioned offices in Bamako. If the only tool in in your tool belt is a hammer, then every problem looks like a nail - and at times it seems as though the only tool at their disposal is a big wad of capital that can only be spent on high-tech contractors also based out of the capitol city. So they buy hundreds of thousands of dollars of hardware, pile into SUVs and swoop into villages and construct elaborate irrigation pump systems and build long chain-link fences for the Malians to plant gigantic community gardens.
But they never stay long enough to teach the people how to maintain the pumps – or they try as best as they can in French to a community that speaks only Bambara. So the pumps inevitably fall apart and no one can fix them and the “beneficiaries” of this big agricultural development projects can benefit themselves in no perceivable way other than dismantling the LEED-certified, solar-powered irrigation pumps and selling the parts as scrap metal. The professional vegetable gardening consultants designed their entire plan on the premise of a functioning irrigation pump, so they didn’t bother investing in quaint technologies like wells and pulleys, so even manual irrigation of this gigantic community garden is now impossible. With no irrigation system this vast plot becomes agriculturally useless, so the villagers pull up all the fence posts and use them to make fences around their own private gardens that they can water by hand. And thus the financial largesse of taxpayers and well-minded donors is all but wasted in a gargantuan orgy of cadeau give-aways and outright theft which does little more than enrich the most enterprising of bandits, discredits any future development efforts, and saps the motivation for truly impoverished people to do anything more than sit on their butts watching Akon music videos on their iPhones and wait for the next SUV full of white people handing out presents.

What the Humanitarian-Industrial Complex doesn’t seem to grasp is that if there is ever going to be sustainable economic growth on the village level, it has to be done without massive infusions of Western capital; in fact, if an economic development project requires the investment of foreign capital, it is going to end once the money dries up and is therefore almost certainly unsustainable in the long run. One guy with a cousin who works high up in the national bank might somehow be able to land enough cash to buy a tractor, but mechanized farming equipment is still much too expensive to serve any foreseeable benefit to the masses with no savings, no landed property to secure vast sums of credit and no connections to defy the natural laws of capitalism. The only way that truly sustainable economic growth is going to occur on the village level is if Malians adopt methods of augmenting their own gardens’ yields with technologies so cheap that they are practically if not one hundred percent free, simple technologies that they can assemble themselves, technologies that are literally too small to fail.

Often when I am walking through my village’s filthy, disgusting, sewage-filled streets, I think of how "underdevelopment" is just a fancy way of saying that resources aren’t being utilized adequately. But this isn’t South Africa or the Congo; there aren’t any valuable mineral resources underneath Sanadougou’s meager soils and sandstone. There really isn’t much to be employed here besides sand, dirt, mud, crumbly rocks and sunlight. Hell, this economy is suffering because water is scarce…

I also think of the profound dilemmas of sustainable development while I’m micturating, stircumating and taking bucket baths in my nyegen. I wonder what of economic value there could possibly be here that Malians aren’t already capitalizing upon…

After such profound thinking sessions, one of the first things I see when I exit my nyegen is my soak pit – still purposefully unfinished – and one of my four papaya trees. They have become such fixtures of my everyday life that I don’t really give them much thought. But after a while I started to notice something…

Way back in November of 2008 after the late James Brown I's inspirational urination and my digging of Sanadougou’s first ever soak pit, the adjacent papaya tree wasn’t much to sneeze at. It was a wimpy, pathetic looking thing.



But a year later, after 12 months of my peeing and bathing and washing all my urine away into that soak pit, something breathtaking has occurred – that wimpy-looking papaya has blossomed into the most prolific fruit tree in my entire garden!



It is the most magnificent papaya tree in all of Sanadougou!



It is full with more than 30 football-sized fruits!



When I’m toiling away in my garden, the neighbors walk by and marvel at the papaya tree and wonder how it is that I make it bloom so. They assume that I went to the city and bought sacks of “Tubabu fertilizer”, because it is well-known in this country teeming with livestock manure that white people are known to spend exorbitant amounts of money on imported, factory-produced chemicals to fertilize their gardens.

“Well, I water it just the same as the other papaya trees, and I don’t feed it with any more cow poop than the other papayas. The only difference that could explain this one papaya’s great fruits is the fact that it is planted right next to my soak pit, so all of the sewage from my nyegen just happens to flow underground directly towards the papaya’s tap roots. It must be the economical reuse of my own wastewater that is reaping Allah’s blessings upon my garden!”

“Your papayas are dirty!” some neighbors say “Do not eat them!”

Au contraire, my nyegen-fueled fruit is perfectly safe and perfectly delicious! There are few things more rewarding than slurping the flesh of a juicy ripe papaya and knowing that the fruit which I am eating was fertilized with my very own urine.


Out of all seriousness, the use of human urine as fertilizer is a wonderfully efficient and absolutely cheap means of increasing the yields of most garden crops. Many individuals might have religious scruples about fertilizing food for human consumption with human waste, many more might be repelled by the “yuck” factor because it almost sounds like humans are directly consuming their own sewage and all of the pathogens associated with it. But that’s not the case – only intermediary plants are consuming the valuable nutrients which urine contains, so these nutrients are simply being recycled. When you think about it, there really isn’t any substantive difference between using human waste and the waste of other animals as fertilizer – there are minor variations in the chemical content of the excreta of different species and especially depending on their own food consumption, but excess nitrogen passed through homo sapiens is no different than that passed through a cow or a sheep.

The most significant matter to consider when choosing between fertilizers is the N-P-K ratio: the relative proportions between nitrogen, phosphorus and potassium contained in the mixture. The reason why chicken manure is such a more productive fertilizer than the manure of other farm animals is because chickens don’t separate solid and liquid waste through a urethra and rectum – birds dispose of it all at once in one N-P-K-rich smattering with one multipurpose cloacae. Compared to human feces, human liquid waste is remarkably richer in all three nutrients – especially nitrogen. In different proportions, the urine of all mammals is more nutrient rich than their feces. The only reason why animals feces are used exclusively for traditional fertilizer and not animal urine is that it is very easy to send a boy out with a bucket to collect cow poop days after the cows have grazed over a particular field – though to collect livestock urine would either require training those same cattle to pee in a bucket, or for that boy to wait underneath the bovine nether-regions in anticipation of those valuable showers of gold.

We humans, however, have over millions of years of evolution developed the ability to control our bodily functions with behaviors conducive to avoiding disease and enhancing food supplies. Not just agriculture but also sanitation is one of the hallmarks of an advanced civilization. The Bambara people have on their own initiative pieced together mud and sticks for the basic nyegen technology which contains fecal matter underground and disposes of liquid waste out into the village streets. My introduction of more sanitary concrete platforms and soak pits is a significant improvement of their pre-existing technology in so far as further reducing human exposure to dangerous pathogens; however, unless everyone in Sanadougou plants their gardens directly adjacent to their soak pits, even this sanitary infrastructure is a tremendous waste of valuable nutrients which could be used to improve the yields of their fruits and vegetables.

The next step in improving Minianka society's waste management practices is to promote an appropriate technology which renders human urine into a usable, portable fertilizer that can easily be transported to the nearest garden. Merely walking out to the cabbage patch and taking a whiz doesn’t suffice because undiluted urine is so acidic that it is harmful to most plants, and moreover, peeing all over cabbage significantly reduces its desirability to potential customers at market.

I invested 4,500 CFA (~$9) worth of plastic and rubber sold in Sanadougou’s weekly market and made a simple contraption which changes the whole equation. I took a 20-liter plastic gasoline drum and spent a week cleaning and treating it extensively so that it is so antiseptic that I could store drinking water inside it. I filled the drum with 4 liters of water and marked off the water line so that I could know when it was 1/5 full. Then I took a plastic funnel and fastened it to the drum’s opening with sliced-up motorcycle tire inner tubes. With this, I could now pee into this plastic drum and store it with ease.

However, my urine storage tank was still incomplete. What makes urine fertilizer so effective is its rich nitrogen content, but if urine is exposed to the air then most of the nitrogen will escape in gaseous form. So I took five sturdy plastic bags, placed them inside one another and filled the inner-most bag with water so that they would seal the opening of the funnel.



Now when I have to go #1, I just simply aim for this funnel instead of the ground-level aperture of my nyegen. It is no extra hassle – if anything, it’s more convenient because there is less of a risk of splash-back for those of us men with superb aim. Though do not think that urine fertilizer is a technology limited to those endowed with dexterous urine-aiming devices – numerous phallicly-challenged Peace Corps Volunteers have overcome their disadvantage by peeing into a cup and then pouring the contents down into their urine storage tank up to the 4-liter mark.

Then I fill the urine storage tank almost all the way to the 20-liter mark in order to fully dilute the urine so that its pH is acceptable to the plants in my garden. It is important to let this mixture sit for a good length of time so that the urine and water are evenly distributed. And then I use the nyegen like normal for the next three days until application.

The use of human urine as fertilizer is much less of a health risk than using untreated human feces, which can transmit giardia, dysentery, hookworm, roundworm, etc. if applied directly to garden crops and is therefore quite dangerous to the gardener and as well as those who consume their fruits or vegetable. Pure urine, on the other hand, is so acidic that bacteria cannot live very long in it; it is so sterile that in extreme situations where freshwater is inaccessible humans should drink their own urine. The only disease that one should really worry about transmitting via urine fertilizer is schistosomiasis, and for this reason after reaching the 4-liter mark I let my liquid gold sit for at least two if not three days before application. The logic behind this is that schistosomiasis is a disease transmitted by infected persons urinating in bodies of water where other people are bathing or swimming; if an infected person were to directly apply their urine fertilizer in, say, an extra-large banana furrow, the schistosomiasis cercariae could penetrate the skin of another gardener working in that banana furrow later that day. But if the water-borne parasites do not find another carrier within 48 hours of their initial urination into a body of water, they die. If I wait until the third day until applying, urine fertilizer is perfectly safe.

There must be a structured means of applying urine fertilizer as well. It must be applied directly to the soil as close to the roots as possible so as to avoid potential contamination of the edible fruits and vegetables, and so the acidic urine does not damage the plant itself. Directly after application, each recipient plant should be irrigated extensively to ensure that the nitrogen, phosphorus and potassium percolate down into the soil. One should apply only modest amounts fairly evenly amongst all plants, and to alternate fertilization with many non-fertilized irrigations so as not to overload the soil.

This practice is good for most garden crops; I use it for my papayas, guavas, oranges, lemons, bananas, zucchini and butternut squash – all of which have grown tremendously since I began this practice. Urine fertilizer is especially effective on crops which respond to nitrogen levels such as lettuce and cabbage – though with vegetables which are usually eaten raw in salad one must be particularly careful to not splash any diluted pee on the plant itself. There are only a few crops that should not be applied with urine fertilizer, most obviously nitrogen-fixing plants like beans and peanuts, and also rice because paddies are usually flooded with water and those cultivating it would have to wade through potentially schistosomiasis-carrying urine.

The end result is that gardens fertilized with diluted urine can see dramatic multiplications in output. Finnish agricultural chemists found that tomatoes fed with urine fertilizer saw 4.2 times as much yield as the control samples, and calculated that the urine produced by one average adult in one year contains enough nutrients to increase a cabbage crop by 160 cabbages (141 pounds) more than a cabbage crop fertilized with standard commercial fertilizer. And the intensity of urine fertilization has profound effects as well; all of my papaya trees are fertilized with urine – but the one directly adjacent to my soak pit has such a reliable daily stream of nutrients that it has borne 6 times as many fruit (and much larger fruit) than those that have been only mildly fertilized.

The potential of urine fertilizer to jump-start Mali’s gardens and its stagnant village economy is enormous. If a small gardener here were to multiply their tomato yield 4-fold or their papaya yield 6-fold, if they grow an additional 160 heads of cabbage (141 pounds) in one gardening season, they could augment their family’s nutritional intake accordingly. And if they can’t consume an extra 160 heads of cabbage, well, let’s just say that that’s more cabbage than what is sold in Sanadougou’s market over the course of an entire year. Even if just a handful of gardeners in my village were to take urine fertilization to their own plots, it could significantly expand their yields, increase these farmers’ incomes, maybe even lower the price of fruits and vegetables to such an extent that they could become a more regular addition to Malians’ carbohydrate-based diet and improve the health of this entire malnourished society. And the practice of urine fertilization doesn’t require anyone to take out any loans, it doesn’t require some NGO to swoop in and build some overly complicated contraption – all that it requires is the purchase of $9 worth of plastic and rubber, the construction of a nifty little urine storage tank, and for gardeners to pee in it.

If that's not sustainable development on the organic village level, I don't know what is.



Wednesday, September 9, 2009

The Nyegenmason's Apprentice

(click here for musical accompaniment)

When most people recall the classical economics of Adam Smith, they usually think of his reverence for efficiency achieved by the division of labor, natural pricing determined by the forces of supply and demand, and his ideal of a free market unencumbered by arbitrary tariffs, regulations and monopolies. Conservative politicians love Adam Smith, because they can selectively quote bumper sticker-sized postulations of his to demonstrate why the free market is inherently perfect and the State should do nothing in regards to economic affairs but maintain courts of law and a strong military to enforce private property rights.
Though the craggy old Scot would probably be aghast if he were to trade in a modern Malian market, not because of anything the State is doing to interfere in its freedom, but rather the complete and utter lack of infrastructure needed to facilitate commerce in the first place. For your average Malian merchant to sell her goods at market, she must ride a donkey cart or walk with a basket of those goods on her head down many kilometers of glorified cow paths which can only be differentiated by the rest of the fields by the fact that multiple people and livestock have previously tread there. Even the roads in the capitol city are made of slightly more compacted dirt and mud. There is one colonial-era railroad from Bamako to Dakar and it derails about every other week, the few airports are little more than landing strips, electricity and running water are hard to come by beyond the major cities and even there they are spotty at best. With such inadequate infrastructure, so few goods can be bought and sold, so many deals cannot be transacted to begin with that it is difficult to argue that the anemic economy suffers from excessive government intervention.

The third duty of government, Smith wrote, is to provide “good roads, canals, and navigable rivers” to diminish the costs of transport, break down local monopolies and make all goods sold at market more competitive. He claimed that investment in trade routes benefit the country most of all, for “they encourage the cultivation of the remote” and “open many new markets to its produce.”

Adam Smith theorized that commerce runs most efficiently when pricing is set by natural supply and the output meant to match it – and he despised government subsidies which do little more than artificially raising prices for the benefit of favored industries. Smith would be loathe to see the Crown lavishing taxpayer money on the producers of consumer goods such as corn farmers and rice merchants – the only persons whom such subsidies could conceivably benefit would be the direct recipients and the government clerks who enjoy their political favor. Everyone else loses.

But what would Adam Smith think about subsidizing the construction of toilets?

In the 18th century, tenured professors at the University of Glasgow shat in chamber pots, which servants then emptied out into the streets. A chamber pot was nothing more than a simple utensil which could be easily fabricated by any blacksmith or tinsmith and sold at market for less than a shilling. Smith’s successors in the 21st century now use porcelain flush toilets which are also bought individually, but are connected to the municipal water grid to dispose of sewage at the local wastewater treatment plant. The waterworks, sewers and treatment plants are undoubtedly public infrastructure no less vital than roads and bridges, and the Mayor of Glasgow very non-controversially collects taxes and user fees to keep these units running. But each individual consumer must pay for their actual toilet themselves. Though a porcelain toilet is expensive, per capita income in modern, industrialized Scotland is so high that even a pauper on the dole can afford one – it is unthinkable that the modern British welfare state would have to intervene in this market at all.

But there are no centralized sewer systems in the small villages of the Malian countryside. The undeveloped agrarian economy is so indigent and struggling to provide even more basic needs like food and water that a sanitary toilet is considered a luxury item. Your average Malian builds his own home out of mud and sticks, and there is a good chance that he and his family scurry off into the woods when they have to poop or pee. If Amadou the millet farmer has any mud to spare, maybe he has built a “traditional nyegen” bokeyuro – a walled-in enclosure where one can shit in privacy. If he has found not only ample mud but also sturdy logs, then he can dig a latrine pit so that the bokeyuro fills up less quickly. All of his urine and dirty wastewater flows out into the open street.

In this economy without municipal wastewater management, an adequate toilet is certainly more than just a consumer good for the individual consumption – it is a vital piece of the most basic sanitary infrastructure necessary to maintain the health of the individual user as well as the public at large. Even a family of subsistence farmers who consume all that they produce, who produce only what they consume and do not trade at all in a market economy – who wouldn’t really benefit much from a railroad or a highway – need this sort of infrastructure so that they might abstain from the commerce of dangerous pathogens.

If Mali were a perfectly ideal market, all human beings would be so perfectly enlightened on their own rational self-interest and the free market would be capable of supplying those goods at affordable equilibrium prices without any outside interference. And since every person in this perfectly ideal market would so thoroughly comprehend why it is in their own self-interest to not live amongst their own raw sewage, everyone would build their own sanitary latrine and septic tank on their own volition. In a perfectly ideal market, even the poorest of struggling millet farmers would realize this fact and thus save the roughly 25,000 francs ($60) it costs to build a appropriately modern concrete latrine complete with a soak pit or infiltration trench.

However, judging by the fact that the streets of Sanadougou and every other Malian village where Amadou walks are full of puddles of piss and shit and diarrhea giving room to fly and mosquito breeding and the most nauseating algae blooms, it would be fair to say that the free market has failed on its own terms to provide adequate water/poop management infrastructure.

There are two major factors holding back the Malian latrine construction industry: lack of education and lack of capital. Amadou might have no desire for a modern latrine because he doesn’t understand germ theory and thinks that dysentery and cholera come from evil sorcerers. And even if he were to appreciate the value of a proper latrine, that 25,000 franc price tag for a single concrete edifice represents 12 percent of per capita GDP (Amadou the millet farmer’s annual income). Without a direct investment of fixed, circulating and human capital, the invisible hand isn’t going to wave Amadou’s wastewater away anytime soon.

The Republic of Mali is genuinely concerned about improving the health and well being of her citizens, but scanty revenue flows preclude a massive latrine construction campaign. But what Mali has been able to do is to call up her good friend Uncle Sam to establish a Peace Corps program. And ever since 1972, Uncle Sam has been sending dirty, grimy, sandal-wearing peaceniks like Zac Mason to this country to live in mud huts and farm organic vegetables side-by-side with our Malian hosts as a big anthropomorphic hand of friendship from the American people.



So should Peace Corps Volunteers like me correct this awfully foul-smelling market failure and build adequate water/poop management facilities for the Malian people?

Absolutely NOT!!! If anything is going to last in this unforgiving climate, it must be regularly maintained. If foreigners do all of the work and then leave, none of the Malians whose health depends upon these latrines functioning will know how to conduct maintenance or repairs, even if they did they would feel that they didn’t have to, and when these latrines inevitably break they will remain broken and unusable until the next NGO rolls into town - if ever - to fix them.

So should the Peace Corps pay for latrines and outsource all the labor to local contractors?

NO!!! Now when the latrines inevitably break, when the soak pits inevitably clog, all of the necessary maintenance skills would be monopolized by a select few. Every Malian man knows how to rebuild his mud hut after rainy season, and likewise there’s no better way to guarantee that each individual homeowner can clean and fix his own latrine than if he builds at least some of it himself. Even when technical masonry is needed, they should be there to at least participate in the more menial aspects of the job. This way, when things fall apart the individual will feel comfortable filling in the cracks, emptying out sludge themselves before it becomes such a problem that they need to hire a professional mason.

So should individual Malians provide all of their own labor and Peace Corps just foots the bill?

Still NO!!! If Malians aren’t willing to pony up for their own latrines, neither should Americans. If sanitation conditions and the standard of living are ever going to improve in this country, Malians have to get into the habit of contributing their own resources and investing in their own infrastructure.

So how do I, Zachary Mason, motivate the villagers of Sanadougou to turn off the boob tube, put down their tea pot, and invest their time and energy and pecuniary wealth into building roughly a hundred latrines and soak pits?

I could spend my two years here conducting an educational campaign to sensitize the populace on the virtues of sanitary waste management. Maybe a couple dozen people would ever show up. Maybe by some stroke of divine intervention I would inspire one or two Amadou the millet farmers to save 25,000 francs and invest in a modern concrete latrine and complete with sanitary wastewater disposal. More likely I would waste my breath.

Thus the strategy that I am using to jumpstart the moribund market in sanitary latrines and septic tanks has more to do something about the massive scarcity of fixed capital; to employ a generous direct subsidy program funded with a Small Project Assistance (SPA) Grant by the United States Agency for International Development. According to the SPA Grant formula, for every funded project the people of Mali have to provide at least 25 percent and the American people pay up to 75 percent of the total cost. The people of Mali have more than enough unused land and surplus labor, so in order to spur the development of the latrine and septic tank construction industry, USAID wired some 1,107,900 francs (~$2,500) to yours truly in order to buy a truckload of cement, plastic pipes, plastic sheets, rebar #6 and tie-wire.

I loathe the idea of distributing presents to my neighbors of Sanadougou, but this situation does not have to cast me in the role of Santa Claus. The purpose of this endeavor is to spur Sanadougoukaw to invest their own resources on sanitation, and unless Amadou the millet farmer is willing to pony up, all of those materials are going to gather dust in my storage room. Anyone who wants these expensive materials can get them for free – but receiving this USAID subsidy is completely contingent on whether or not they’ve already contributed the most strenuous, tedious and disgusting parts of the job on their own time.

To catch you up to speed, this is how you go from a bare patch of nothingness to a modern latrine and septic tank:

Step 1: I find a suitable location. It should be someplace close enough to where people spend most of their day so that they can relieve themselves with minimal inconvenience. However, the construction site cannot be less than 30 meters from a well in order to prevent the direct contamination of drinking water. I also have to know that the water table never reaches above 2 meters below ground-level at its rainy season height if it is appropriate to dig a soak pit. Otherwise we have to build an infiltration trench.

Step 2: Amadou the millet farmer digs a hole. This will become the latrine pit where all the shit goes. After about 0.7 meters of dirt, the earth in Sanadougou is composed of about 5 meters of fairly solid sedimentary rock until it turns back to sand again. So as long as the latrine pit is no more than a meter in diameter, a simple pit dug straight down into the rock like this is quite durable even without any cement lining.

Step 3: Amaou digs another, significantly smaller hole with a surface area of at least 1.7 square meters for person who uses the latrine daily. This will become the soak pit.

A dilemma exists for those who want a modern latrine but their current latrine is nearly full; it makes no sense for me to devote expensive construction materials on full latrines which would need to be broken and emptied or abandoned altogether within a short span of time – I demand that latrine pits be at least nearly empty. If someone’s latrine is full and they have no room to dig a new latrine pit, then we have to build over the old one – but first, someone has to empty the latrine pit. If the homeowner hasn’t the wherewithal to jump down into the warm, maggoty muck and remove bucket after bucket of their family’s shit and piss and diarrhea, they have to hire someone to undertake the most undesirable job in the entire world.

But first, my Malian neighbors have to ante up. Granted, they probably don’t have a lot of cash to contribute. But Adam Smith insisted that the definition of capital cannot be limited to hard currency circulating throughout the economy – there is also “fixed capital” i.e. physically tangible tools and raw materials which can be invested to form additional units of capital. To build a nyegen and a soak pit we need a lot of sand, gravel and porous sedimentary rocks; in the city you have to buy those materials, but here en brousse there are ample supplies of sand, gravel and rocks free for the taking out in the fields.

Step 4: Amadou fills his soak pit with rocks.

At this point we call in my homologue Sidiki Sogoba.
Sidiki is a baller to the extreme. He is a fairly traditional Minianka Muslim who has two wives and nine children, he farms millet and peanuts and watermelons and he hunts rabbits with his colonial-era musket. Sidiki is my best friend in town, and the best mason in the entire Commune. He does flooring, roofing, bricklaying and finishing – but his specialty is in nyegen construction. I am his apprentice.


If Amadou gives Sidiki sand and gravel, I give him cement, rebar #6 and tie wire, Sidiki can (Step 5): make a sanitary platform.

A sanitary platform is the keystone to a durable, easily-maintainable latrine. The rebar-concrete slab is built so that it is amply larger than the pit itself, so it can easily support its own weight plus that of whoever happens to be squatting upon it. It would be quite difficult to cause the sanitary platform to collapse if it was installed properly, and even if it did collapse, it is built so that it is easily interchangeable, replaceable and reusable. The sanitary platform is molded with a penis-shaped hole in the middle where the poop and any misdirected pee goes (total coincidence) and two foot-sized pads where your feet are supposed to go to help aim your butt at the penis-shaped poophole (the location of these pads were determined after decades of research by leading scatological projectile physicists). Then Sidiki molds a penis-shaped concrete blob with a rebar handle (this is intentional) so that it fits into the penis-shaped poophole. This is so that the user of this sanitary platform can keep a lid on it at all times when they’re not using it so that flies and mosquitoes and cockroaches and bats do not nest and reproduce in the latrine pit.

After three days of drying and curing, the sanitary platform is ready for installation! Sidiki hauls it over to the construction site via his trusty donkey cart.

At this point, (Step 6) Sidiki and I prepare the rest of the nyegen floor with gravel. Then (Step 7) we take the remainder of the cement, sand and gravel, then mix it all into concrete, and lay a smooth concrete flooring. My dad sent me a level once used by my grandpa when he ran a tiling and flooring company, so Sidiki and I can ensure that gravity pulls any pee that falls beyond the sanitary platform urine catchment flows downhill to the plastic tube.

Up until September 10, 2008, Sidiki Sogoba had been doing Steps 1, 2, 4, 5, 6and 7 by himself on the latrines of Sanadougou’s well-to-do who could afford cement on their own dime. However, since I have taught Sanadougoukaw how to dig a soak pit (Step 3), Sidiki’s nyegens now come equipped with a more sanitary outlet for wastewaters than the adjacent street. So my personal contribution to Malian water/poop management infrastructure construction technology is … (drum roll please)…

(Step 8) I take a plastic tube, I stick it between the latrine floor and the pit of rocks, and then I cut it!!!

And then (Step 9) I take a big plastic sheet and cover up the soak pit rocks and tube. And then (Step 10) I shovel mud on top of everything. This way, when you pee, all of that stinky, possibly schistosomiasis-carrying micturate winds up underground where it can’t hurt anybody. Since all of the potentially contaminated wastewater is out of sight, no flies or mosquitoes are going to breed in human sludge or simply stop for a sip and then buzz off to spread whatever pathogens they find in human drinking water or food. What was once a puddle of fetid disgustingness is now a regular, boring patch of wholesome-looking earth!

Then, finally, the most important step: (Step 11) the owner of this brand new latrine pays Sidiki Sogoba for a fair day’s skilled labor. His current rate is 2,000 francs (about $5) per latrine. This step is very, very important, because even if the most expensive construction materials were paid for with a USAID grant, unless they can do all of the skilled masonry themselves, each individual who wants a modern latrine still has to pony up a sizable amount of his or her own cash. Though this is a heavily subsidized project, no one here is getting a freebie – not on my watch.

In all, if Malians want to build modern latrines under this program, they have to provide all of the land, labor, and raw materials in the form of sand, gravel and rocks – what the U.S. taxpayer is paying for is cement, plastic tubes, plastic sheets, rebar #6 and tie-wire. When you calculate how much work or money goes into digging or emptying the latrine pit, collecting rocks, sand and gravel, and then paying Sidiki for his masonry skills (25 percent of the overall cost), allocating the generous subsidy (75 percent) for manufactured materials does not feel to me like handing out presents – it’s more like just rewards for hard work which benefits not just the individual owner of the nyegen but the health of everyone who lives and works and purchases food in Sanadougou. Especially if the person using this new concrete nyegen already has giardia, dysentery, cholera or schistosomiasis, the new fancy cement formwork isn’t going to help him as much as it is going to protect the rest of society from catching his contagious disease.

Since this is my first project, I conducted it as an experiment in human nature. The SPA Grant from USAID provided me with funds to build approximately 30 concrete latrines with soak pits and an additional 5 soak pits for those rare families who already have concrete latrines. After I received the money in February, I purchased the materials little by little to see exactly how much of a subsidy was needed to bring latrine construction into steady gear. I started with just the plastic tubes and plastic sheeting for the soak pits. So throughout February and March I canvassed the neighborhood, talking up soak pits with the head of every family, measuring the space behind their nyegens where all the icky wastewater flowed and trying to encourage them to pick up a shovel and start digging.

The response was underwhelming. After two months of canvassing, my host brothers did a half-assed job of digging an infiltration trench. And I somehow managed to convince one old man named Issa Dao (the father of the Secretary of the Mayor’s Office – who worked with me extensively in planning this project) to hire some unemployed idlers to dig holes behind his three nyegens and fill them with rocks. After two months of rabble-rousing I had finally found my first customer! So in April I went to San to buy 112 sacs of cement.

The tipping point in this subsidy’s catalyst effect would be the day I rolled into town on top of a truck full of 112 sacs of cement. Mind you, this is a society where the vast majority of houses are made exclusively out of mud. Only the wealthiest merchants and professionals can afford to line their floors with cement, the amount of cement that someone has used to feather their nest is a reliable indicator measure of their wealth and status. A truckload of cement is the biggest metaphorical carrot that these people will ever see in their lives. Once passersby saw what Sidiki and I were doing at Issa Dao’s house, and word got out that I had 106 sacs of cement left to reward whoever dug their soak pits and gathered their raw materials the quickest, it was as though Allah flipped a switch – something just clicked. From April through August, Sidiki and I have so far built 24 out of our quota of 30 latrines. I think we will be done with this SPA Grant’s worth of materials somewhere around October.

This project has also borne its fair share of hiccups. First of all, it seems that this subsidy has its greatest effect in motivating those people who have only a traditional mud nyegen and would like to climb up the status ladder with some cement. Even if it means that they have to dig a soak pit that they really don’t care about, if that’s what it takes they’ll do it. I have had a really hard time convincing people who already have cement-lined nyegens why it is in their best interest to do something about their wastewater – if people can’t grasp the concept of sanitation, a plastic tube isn’t much of a motivating incentive. So far I have only received a smattering of takers: Sidiki himself, two teachers and the “pharmacist” down the street.

If you remember in previous episodes, the “pharmacist” had two of the most egregious plumes of wastewater I’ve ever seen, and I told him that I can’t buy medicine there so long as the nyegenji is flowing and filth flies are buzzing around his wares. And y’know what? He dug a humongous soak pit and diverted all the nyegenji underground! I was totally shocked! …and then the “pharmacist” reminded me of “my end of the bargain”. Fuck. There’s still no way that I’m ever going to put one of his bootleg Chinese sugar-coated chalk placebos in my mouth, but now I make a habit of stopping by the “pharmacy” to buy his wife’s newly-sanitary beancakes for breakfast and all parties seem to be content.

The most tremendous problem is that 4,420 out of 4,428 inhabitants of Sanadougou live in mud huts, I rolled into town with 112 sacs of cement, and I want to use it all to build concrete latrines. I’m building latrines with materials more durable and infinitely more desirable than the mud which people use to make their houses. A lot of people have come up to me and said, “I don’t want cement for my nyegen, I want cement for my house!”

I can feel empathetic to their frustrations, but I can’t really do anything about them – this USAID financed cement is for latrines and latrines only. Every time I have one of these encounters, I try to explain how a concrete house benefits just one family while a concrete latrine with adequate wastewater removal benefits the health of everyone in society – unfortunately, this argument doesn’t get me very far in a society where illness is known to come from evil sorcerers, frogs, and whistling at night. So the only alternatives I’ve come up with are to either 1) pretend I can’t understand their Bambara and change the subject to “So, when are you going to dig your soak pit?” or 2) offer to sell them cement at the price I just bought it for – which they never will; or if they’re really persistent 3) just ignore them and walk away.

When I see a sack of cement I see it turning into a squeaky-clean latrine and transforming the sewage-filled streets into verdant boulevards full of trees and flowers; somehow other people see a sack of cement and see it turning into a motorcycle. A number of people have been frank in demanding “Madu, gimme cement so I can sell it and find money”, “Gimme 40 sacks of cement so I can sell them and buy a motorcycle”. I find such attempts to suborn my Peace Corps service into a gravy train to be so personally insulting that they don't deserve a polite response.

Though I’d rather not make it into a fight, so I craft an appropriately snarky absurdity, “Give me your entire herd of cattle, your sheep, your goats, the entire contents of your granary… actually, no, give me your granary too.” Joking cousins!!! You eat BEANS!!!

But some jerks are actually serious when they demand that I give them cement to resell. I really love it though when they to pull the cultural card, “In our country, when people have wealth they share it with their friends” – because then I get to throw it right back at them.

“In my country, do you know what we call a government employee who takes public property and sells it for personal gain?”

“No, what?”

“A criminal.”

In spite of these challenges, you, United States citizen, deserve to know exactly how the government is spending your hard-earned tax dollars. This is why I, Zachary Mason, Peace Corps Volunteer, believe so strongly in accountability and transparency that I go to painstaking lengths to keep immaculate records of my project budget and expenditures and document all of it online for all the world to see.

I’m making absolutely no exceptions to the integrity of my nyegen project. A number of people have commented on how disloyal I must be since I’ve made 24 concrete latrines in this village – but my host family’s nyegen is still made out of mud.

“I am tremendously loyal to the Sanogos, and I will cement their nyegen. But first they have to finish digging their infiltration trench, go to the fields and find sand and rocks and gravel…”

The fact that Sanadougoukaw have to pay for a sizable chunk of their new nyegen is what makes this project so much more sustainable than if I were just building them for free. In this country it is really easy to tell the difference between what buildings people have built themselves and what was a big fat NGO cadeau – whereas the former will be cost-efficient and repaired on a constant basis because people have already paid for the sunk costs of preliminary construction, the latter will inevitably decay and crumble and no one will put any time or money into it because they feel that they can just wait for the NGO to come back and build it again. The fact that my Malian neighbors have to pay at least 25 percent if they want a new nyegen is the only way to ensure that they have even the most basic semblance of its economic value – the 75 percent subsidy is the sine qua non which encourages them to spend that 25 percent in the first place.

So there are about 500 nyegens in the town of Sanadougou, Sidiki and I have perfected 24 of them, and factoring in the increased rate of construction, work patterns and the rate of population growth, every single nyegen will be cemented and sanitized in the year 2016. There’s no way that I’m going to be able to completely rid this town of icky wastewater by myself. Indeed, I am going to request that Peace Corps replaces me with a new Volunteer when I’m out so as to continue the successful campaign I’ve got going here. The mighty United States Peace Corps will trudge on fighting the Good Fight, but in the end we can’t be responsible for the upkeep of every last Malian’s toilet - after this period of midwifery, the subsidies are going to come to an end and the free market is going to have to finish the job. Hopefully, the valiant struggle of Operation Sphincter Plug shall demonstrate just how clean the streets can be if people just get off their asses and put their back into it, and we can win the battle of hearts and minds and bowels. One day, I can only hope that everyone in Sanadougou realizes the value of sanitation to the extent that their own reasoning is enough motivation for them to save and invest their own money into concrete nyegens and soak pits and contain their own waste. And if they do that, there might just be less flies and cockroaches and mosquitoes spreading pathogens around, people will face less risks to getting sick in the first place, and my neighbors the doctors will be less busy treating shriveled little babies dying from simple diarrhea.

Insh’allah…



Monday, April 13, 2009

My Augean Stables

In previous episodes of this adventure serial, our hero was inspired by his kitty cat digging cat holes in his litter box to dig a big deep hole in back of his nyegen. The American reader who has lived all of his or her life micturating and stircumating into a porcelain toilet flowing into a septic tank or a municipal sewer system might not understand the import of this action, but as a brief primer let me introduce you to the mechanics of a pit latrine.


First, I must emphasize the not-so-obvious reality that in some parts of the world a pit latrine is considered newfangled technology. In the year 2009 there remain many societies in which few people have bothered to build any sort of infrastructure to dispose of human waste in a sanitary matter. What that means is that everyone in a small village poops in the woods, in the fields, or on certain designated rocks or directly into the water. In more densely populated towns and cities, that means that people just pull down their pants and shit in the street where other people are selling and selling food. Oftentimes if a society lacking in sanitation infrastructure is located near a pond, a lake, a stream or a river, that means that everyone in this rural society disposes of their solid and liquid waste in the very same body of water which also serves as either their own or another human community's sole supply of drinking water - putting that society at grave risk of cholera outbreaks. This is the absolute nadir of public sanitation.

There are other cultures which have collectively decided that defecation out in the open, in and near water and food supplies is a hazard to public health if not humiliating to everyone in that society. And so they have developed their sanitation practices somewhat and built designated areas which are reserved exclusively for the depositing of feces and urine. In the Bambara and Minianka cultures of Mali families often build their own structure known as a bokeyuro – euphemistically, a “traditional nyegen”, but literally, a “pooping place”. It is what it sounds like; an area demarcated by a mud brick wall inside which people poop. The chief advantages of a bokeyuro over open defecation are that 1) fecal matter is controlled to some degree – people are no longer shitting all over the place, but rather in one place; 2) it spares its users the indignity of shitting in the street for all the world to see. The primary disadvantage of having everyone in a family of 35 shitting in one place is that it very quickly becomes full of shit – and a concentrated smorgasbord for filth flies, cockroaches, pigs and every disease vector which enjoys eating human feces.

The bokeyuro and its close relative, the sugunyekeyuro – “peeing place” – are not confined to undeveloped rural villages; I have been to a number of sketchy bars and restaurants in densely-populated urban areas where – upon asking for the nyegen – I have been shown to a seemingly empty room. Seeing no toilet seat, no urinal, no chamber pot or even a hole in the ground, I was at first confused as to what I was supposed to do. But after noticing a foul-smelling puddle on the floor it became quite apparent that the standard protocol in this establishment was to just do as one likes so long as it’s confined to this one closed container – and to leave the mess for someone else to clean up. The only aspect of a “traditional nyegen” which could be fairly called a virtue is that at least no one can see the user as they suffer the indignity of using it.

After many generations of building and managing “traditional nyegens”, proprietors of bokeyuros became disillusioned with the fact that they had to sweep up floors full of shit and piss every day. And so they discovered that if you dig a hole in that designated shitting place and bury a clay pot up to its brim, the pot fills up more slowly and one does not have to sweep up shit so often, and moreover the chamber pot can be closed with a lid. Eventually this semi-buried chamber pot evolved into what is known as a “pit latrine”, which is exactly what it sounds like – a hole in the ground on top of which people squat and poop, though a hole which leads to an underground pit which is so voluminous that it can store many months if not multiple years’ worth of fecal matter. Due to the fact that the shit is safely stored underground, a pit latrine is the simplest technology to contain and concentrate human solid waste in order to reduce fecal-oral disease transmission. In Mali the pit latrine is called a nyegen, and especially in rural villages a nyegen is more often than not constructed out of logs, dried mud and mud bricks.




Though a major step up from open defecation, a "traditional nyegen" has many faults to its design. The first and most significant is that the vast majority of nyegens are built out of mud - which is a perfectly adequate construction material so long as you don’t mind seeing your nyegen disintegrate under the heavy rains and having to rebuild it all over again every year. When I was living in Sinsina last rainy season I woke up during a torrential downpour one night and came out with my raincoat and headlamp prepared for a nocturnal stircumation - when I realized that the nyegen which I had struggled so hard learning to use over the past month had collapsed into the pit. It wasn’t a very fun night.

Most nyegens are not closed properly - if at all. Just as all of that fecal matter is concentrated in one place, so is the stench – and all of the insects and vermin which are attracted by it. And if flies are feasting upon human waste, they can transmit those pathogens equally well if they are from waste on top of a soccer field, the central market square or from inside an unclosed nyegen.

Pit latrines without proper coverings are also hazardous to small house pets. One Peace Corps Volunteer who failed to properly cover her nyegen suffered the fate of curious kitten peering into the hole and falling into the pit. She tried hoisting down a bucket, but the kitten could not be made to understand that it was supposed to climb in. Every time that the Volunteer crouched down over the hole she would hear her kitten mewing – and she knew that she was peeing all over it – until the mews became weaker and weaker and the poor critter eventually died of starvation.

Moreover, the greatest weakness of a latrine is that the latrine pit is ultimately going to fill up without some sort of outlet. This does not necessarily have to happen, for if a given latrine is seldom used and it also serves as a food source for a considerable population of worms, flies, cockroaches and dung beetles, the mass of the pit’s contents could technically decompose faster than it accumulates. But more often than not it is the other way around. Even a latrine pit is used only for the disposal of solid waste, eventually there is going to be a big stinking mass of human feces and someone has to perform the unenviable task of jumping into that latrine pit and shoveling out its contents. This job is so objectionable and yet so necessary in a society with pit latrines that Indian civilization created an entire caste of persons – the Dalits – who are born to the foul and dangerous occupation of shoveling other people’s shit.

Latrine pits fill up particularly fast if they are misused for the disposal of wastewaters which stifle aerobic decomposition and turn the nyegen into a stinking cesspool which serves as a breeding ground for pathogens, is never going to evaporate, and is difficult to remove. It’s most likely no big deal if a little bit of pee trickles into the poop pit because while squatting you had to #1 and #2 at the same time; it only becomes a problem if this happens to a great extent on a regular basis. What’s really bad is if a family dumps their average weekly 1,600 liters of greywater produced from washing persons, dishes and clothing into the latrine pit – in which case it is going to fill up in no time at all.

One means of significantly reducing the quantity of mass inside a latrine pit and requiring less-frequent shoveling sessions is to separate the solid waste from the liquid waste. Malian cultures which developed mud nyegens found this out pretty quickly, which is why just about every nyegen in this country is made with a second hole on the bottom of one of the mud brick walls which allows wastewater to flow out. These outflow holes work just fine in terms of reducing unpleasant latrine-emptying labor. However, simple outflow holes kind of defeat the entire purpose of containing disease-spreading pathogens, for even if the squatting hole is aptly closed there is now raw, untreated sewage lying in the open where it is accessible to every species of disease vector known to mankind.


Some families - especially those who live in the outskirts of town next to their fields and gardens -simply place their nyegen in a remote corner of their concession so that their wastewater can flow out to a lightly-trafficked part of their living space. My host family’s nyegen water empties out in back of their house where no one has to see or smell it. The agglomerate of mud and sewage which has been generated in back of the nyegen after years of use also serves as their pigs’ favorite location for recreation, so every time the mucky sow and her piglets trot by we get a whiff of general nastiness (this is also serves as a prime reason to never eat pork in this country).


Though when I walk into the center of town where the concessions are closer together and there is no field or garden into which the wastewater can flow out, every family’s greywater and urine flows directly into the street where everybody walks, their children play and their animals roam. To say that the streets of Sanadougou are "foul" or “disgusting” would be a gross understatement.

On a typical day when I have to walk to the center of town and buy some sugar at the butigi, this is what the streets look like:


If you’ve never before lived in Mali or a similar underdeveloped country, you might be wondering: “What the Hell are those big crater-looking things on either side of the road?” Those, my friends, are puddles of human liquid waste.


Ewwwwwwww....


Ewwwwwwwwwwwwwwww....


Ewwwwwwwwwwwwwwwwwwwwwwww.....

Sometimes people will dig a little hole to “contain” their wastewater so that instead of spilling all over the street it sits in a relatively smaller, fetid and actually more hazardous cesspool.


Ewwwwwwwwwwwwwwwwwwwwwyuckkkkkkkkkwwwwwwwwww….


Ewwwwwwwwwwwwgrossssssswwwwwwwwwwwwwwwwwwwwwww…
Oftentimes people use their wastewater ditches for garbage disposal too.


Ewwwwwwwwwwwwwwwwwwrrrrrretttttttcchhhhhhhhhgagggggggggggggggggggggg…


Some of these nasty puddles are really, really big. Karitie Sanogo stands in the background for perspective.


Ewwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwww......

Even my Minianka neighbors who believe that diseases come from wizards and evil spirits understand that these wastewater puddles are really, really bad because they serve as breeding grounds for filth flies and mosquitoes. They believe that the wizards turn into flies and buzz over to place their curses in other people’s food. The Miniankas are like ¾ of the way there…


The worst part about standing wastewater is that it threatens the health of everyone in the community – not just those who produced this uncontained pee and greywater. Let’s say that the Sogoba family is currently sharing a really bad case of amoebic dysentery; most of their diarrhea fell down into the nyegen pit, but little Bakary missed the hole and splattered all over the floor and so his mother washed the floor down with water and it flowed out the drainage hole into the street. A female filth fly is hungry and thirsty, so she sticks her proboscis into the Traorés’ effluent of human waste – while she’s at it, she will stick her front two legs into the water and pick up whatever unicellular amoeba have been previously evacuated by the Traoré family.

Let’s say the Dembele family does everything right; they get their drinking water from the hand pump in the village square, they filter their water and treat it with chlorine bleach, they wash their hands with soap after going to the bathroom and before eating. As the family gathers around the communal food bowl for dinner, the female fly which was just drinking from the Traorés’ cesspool swoops down and lands in the Dembeles’ tigadegana. Now the Dembele’s peanut butter sauce is spiced with a dash of Bakary Traoré’s diarrhea with a few young amoebas to boot. Now the Traorés and the Dembeles all have amoebic dysentery! This is why improving sanitation on the household level alone does not suffice to improve a family’s health – sanitation campaigns must be conducted on the community scale.

So this is where I, Zachary Mason a.k.a. Madu Sogoba, Peace Corps Volunteer, come into the picture. Before anything else, after being roused into action by the hardest-working man in the sanitation business, my kitty cat of soul James Brown, I took the initiative of spending a week in back of my nyegen digging a big fat hole. As this was the first time that anyone in Sanadougou had ever seen a white person doing manual labor, the week that I dug that hole behind my nyegen was a major spectacle.

However, what sets the hole in back of my nyegen apart from the couple-inch craters which my neighbors have made to create stinking cesspools of slime is that there’s a more planning and a little bit of industrial-age materials involved in my creation.

What I have made here is the pinnacle of water sanitation technology appropriate for a rural Malian village: a soak pit - or in the local vernacular, a wuluwuludinge. Instead of any old hole, it’s a hole filled with rocks with a plastic tube leading from the outflow hole in the nyegen. It’s not quite finished - but that’s the point; over time I’m going to fill it completely with more rocks, cover it with sturdy black plastic, line the plastic tube with cement, and cover the entire thing up with mud so that looks no less wholesome than the rest of my garden. But in the meantime it serves as an excellent teaching tool for all of the people who walk by and ask me “what the Hell is that?” I invite all of the curious onlookers into my concession to inspect my new wuluwuludinge, show them what its purpose is and how it works, and offer to help them build one behind their own nyegen(s).

A soak pit really isn’t all that complicated. The purpose of this contraption is to thoroughly contain human wastewater so that it flows directly underground with absolute minimal interaction between other humans, livestock, and disease-transmitting insects. If one were to put a plastic pipe directly between the nyegen and the ground without a storage cavity, the water would not be able to seep quickly enough into the soil. Thus a soak pit serves as rudimentary septic tank; the first thing that it does is provide sufficient volume for the wastewater produced by a given family to sit in a contained location, and as the wastewater sits there, donné donné it will seep into the soil surrounding it. The pit should be filled not with concrete rubble or mud bricks but only with sedimentary rocks which can be permeated with water and still maintain their form. And every couple of years the owner of a soak pit should open it up, let the rocks out in the sun for a day to dry and clean them off so that they remain permeable.

My water sanitation how-to books say that soak pits can also be built in rural villages with indigenous materials; if there is bamboo available it can be hallowed to serve the same function as the plastic pipe, and then instead of plastic sheeting the hole can be covered with straw, corn husks or leaves. If available locally, bamboo and agricultural refuse is available, these materials could be economically-preferable to plastic piping and sheeting because it can be absolutely free of charge; however, organic materials eventually rot and need to be replaced – whereas plastic is relatively durable.

So not only am I teaching people about the merits and joys of soak pits – I’m also in the process of organizing a project to build a preliminary stage of 30 of these babies throughout the village of Sanadougou. The scheme Peace Corps has for project funding is that the local community has to pay at least 30 percent of the total project cost (which can be paid in raw materials, tools and services as well as cash) and USAID funds up to 70 percent. I had a series of meetings with my boss, the dugutigi of Sanadougou and his posse of old men and le Bureau de la Mairie, and we worked out a deal that if individual families can provide for all of the rocks, sand, and either pay for or provide in-kind all of the skilled and unskilled labor that goes into the making of a soak pit, then the American people will chip in for all of the plastic piping and sheeting.

What’s more, we’re going to throw in a brand new, cement-floored nyegen! One can certainly build a soak pit in back of a traditional Malian mud nyegen, but when the rains come all of that mud on the floor is going to rapidly fill up the pit and clog the pipe. There are about a dozen latrines in this village made with at least cement floors, and for those all that we need to do is make sure there’s a cover over the hole and dig a soak pit in the back and its disease-transmitting days are effectively over. But if we’re going to build a soak pit in back of Sanadougou’s more numerous mud nyegens we are going to have to remake the flooring with cement if not rebuild the nyegen from scratch.

And thus my job nowadays entails walking down Sanadougou's filthy streets, stopping to chat with my fellow villagers and talking to them about their nyegens and wastewater, to measure the dimensions of what needs to be dug, and let them know about an offer they can't refuse: you get off your butt and provide the labor, rocks and sand, and then the American people will provide you with $80 worth of cement, rebar and plastic and we're going to build a brand new cement nyegen which they'll never have to rebuild it again. There will be no sewage spewing out into the streets, filth flies and mosquitoes will have less stagnant water to lay their eggs in, and maybe just maybe pathogens will be reduced to such an extent that you will be able to discern a measurable improvement in their families' health. I think that's a pretty good deal.

After 8 weeks of canvassing and meeting with dozens upon dozens of families, however, results have been quite underwhelming. One guy down the street has dug 3 holes and filled 2 of them with rocks, another guy on my street has accumulated a pile of rocks in front of his nyegen, and after shaming them into action my host brothers have made a half-assed effort at digging a hole. A lot of people seem to be completely indifferent to the fact that their children are playing in, their livestock are drinking from, and they are inevitably ingesting their own and other people's wastewater.

I was trying to persuade one family which just so happens to supplement their farming income with a "pharmacy"; a mud hovel with bootleg Chinese manufactured medications which are in all likelihood nothing but sugar pills. They also have among the worst, most disgusting cesspools in the entire village (their twin nyegenji puddles are pictured above). Time and time again they would laugh me off, "Oh Tubabuke, don't you see that we have so many better things to do like drinking tea and selling medicine?"

They didn't even give me direct eye contact until I started talking dollars and cents. Walking by one day I mentioned to the pharmacist "I've got a headache and I would really like to buy some medicine - but I'm going to buy my pills from the other pharmacist down the street because his sewage isn't spilling out into the street and so his medicine is probably a lot cleaner". As I continued along my way I could hear the gears churning in his head...

Despite the lack of worldly-physical action, in spirit everyone seems to be behind me. I'm told every day "May Allah help you in your good work!"

"Allah-u-akbar; however, He's not going to clean up our village. But you can give me a hand..."