Low-cost UDDTs in Adjumani, Northern Uganda - supported via surcharge on water bill
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UDDT stands for urine-diverting dry toilet. UD stands for urine diversion.
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TOPIC: Low-cost UDDTs in Adjumani, Northern Uganda - supported via surcharge on water bill

Low-cost UDDTs in Adjumani, Northern Uganda - supported via surcharge on water bill 03 Sep 2012 10:06 #2179

  • HAPitot
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  • Environmental engineer with a passion for low cost and resource recovery issues in sanitation
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Dear all,

First, allow me to introduce myself. I am Hanns-André Pitot, since 2008 technical advisor in the fields of water and sanitation in Adjumani, Northern Uganda. I am working for GIZ (formerly DED) and advising the Town Council of Adjumani. I am an engineer for environmental pollution control with a M.Eng. degree from the United States, and (still) a national of Mauritius.

I have placed two sets of photos on the Flickr page of „Sustainable Sanitation“ depicting the sanitation work we have been doing in Adjumani:
Http://www.flickr.com/photos/gtzecosan/sets/72157630727680876/
Http://www.flickr.com/photos/gtzecosan/sets/72157631160051774/

The first set of photos deals with our (that is GIZ and the Adjumani Town Council) approach to sanitation and waste management during the last couple of years, the second set of photos shows ecosan toilets that have been constructed by private means - partly initiated by our work at the Town Council. The photos come with detailed explanations, so that I won’t give details here.

In Adjumani, we have been following a „two track approach“ to sanitation and solid waste. The first track addresses existing sanitation systems and consists of the disposal of sludge from latrines and septic tanks in a constructed wetland system. The second track comprises of the promotion of ecological sanitation (UDDTs and a new design of composting toilets), and of a small manually operated composting facility where both the solids from ecosan toilets and organic waste from the town area are processed. As a financing instrument, there is a surcharge on piped water that we are using to finance support for the construction of ecosan toilets (the ones shown in the 2nd set of photos) and the purchase of compost for city greening purposes from the facility.

In recent times, there has been a lot of talk of reinventing the toilet to suit the needs of the very poor in developing countries. Our low-cost model of a UDDT as depicted in the first set of photos is costing less than 2 US cents per day per person (assume a 10 year life span, 5% interest on capital, and five users). As it turns out in Adjumani, they are still too expensive to be constructed by the very poor. It’s predominantly more affluent people who have ecosan toilets constructed either for themselves or for apartment complexes. The 2nd set of photos is showing the ones that have been finalized.

In terms of future additions to the system, we are planning to construct more demonstration toilets, and five shared ecosan toilets for clusters of very poor residents. In addition, we are thinking of a small bore sewage system for the town center with low-cost wetland treatment and irrigation of the treated water.

If there are any questions about the photos, I would be happy to answer them.

Kind regards to everybody,

Hanns-André

P.S. As an eye catcher, see here one photo out of the set where the link is given above:


Low cost toilet by Sustainable sanitation, on Flickr
Hanns-Andre Pitot
Technical advisor water and sanitation
presently in Moroto, Uganda
Last Edit: 05 Sep 2012 15:58 by HAPitot.
The following user(s) like this post: tmsinnovation, JKMakowka

Re: Photos from Adjumani, Northern Uganda (low-cost UDDTs supported via surcharge on water bill) 06 Sep 2012 13:12 #2208

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Sep 2013
Thanks for those interesting pictures Hanns-André.

I will be actually working with UWASNET in Uganda starting at the end of this year so I am naturally interested in eco-san projects in Uganda. Would it be possible to get into contact with you sometimes in November, or early next year to share some experiences you had with UDDT in Uganda?
Krischan Makowka
“You never change things by fighting the existing reality. To change something, build a new model that makes the existing model obsolete” - Buckminster Fuller

Re: Photos from Adjumani, Northern Uganda (low-cost UDDTs supported via surcharge on water bill) 06 Sep 2012 16:09 #2209

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Dear JK,

as per our present planning, I should be stationed in Adjumani until the end of 2012, so that we could possibly meet at the end of this year either in Kampala or in Adjumani itself. I would be happy to take you or anybody else for a tour in Adjumani. I suggest you first contact me by e-mail at This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Kind regards,

Hanns-Andre
Hanns-Andre Pitot
Technical advisor water and sanitation
presently in Moroto, Uganda

Re: Photos from Adjumani, Northern Uganda (low-cost UDDTs supported via surcharge on water bill) 10 Sep 2012 09:40 #2220

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Ok great, I will send you a message once I know in more detail how my assignment will be organised in the first couple of weeks. Perfect would be of course if I could visit Adjumani, but I doubt that will be possible still in 2012.
Krischan Makowka
“You never change things by fighting the existing reality. To change something, build a new model that makes the existing model obsolete” - Buckminster Fuller

Re: Photos from Adjumani, Northern Uganda (low-cost UDDTs supported via surcharge on water bill) 10 Jul 2013 06:21 #4996

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  • I work in IT in the UK, but have had an interest and small time involvement in water and development issues, particularly at Kagando Hospital in Uganda. Am keen to promote information and ideas towards self-help improvement and development, hence the web
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How much does it cost?

I would be most interested to know the approximate cost for building such a toilet structure in Uganda, both the single one for household use, and the 2 or 4 stance version suitable for a school. (The reason for my interest: I have been asked to sponsor toilets for a school in Uganda, and wonder what the actual cost should be?)

Re: Photos from Adjumani, Northern Uganda (low-cost UDDTs supported via surcharge on water bill) 12 Jul 2013 11:39 #5030

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Dear Hanns-André,

Congratulations on this important work.

Why does the (very artistic) instruction sheet say that the users should not add ashes themselves (while we know this would be best for controlling smell and flies)? Is this because the ashes are scarce and tend to run out? If so, maybe a more abundant cover material could be used, such as dry soil (mixed with the available ashes).

As I have mentioned in the following links in this forum, I promote the recycling of cover material, after it has been treated (by time, heat, sun, etc.) to eliminate the pathogens. This recycling makes cover material plentiful, without the need to constantly transport things long distance to and fro, plus it reduces the amount of smell and flies.
forum.susana.org/forum/categories/34-uri...e-interview-on-uddts
forum.susana.org/forum/categories/34-uri...terial-in-uddts#2866

Best wishes,
Chris Canaday
Conservation Biologist and EcoSan Promoter
Omaere Ethnobotanical Park
Puyo, Pastaza, Ecuador, South America
inodoroseco.blogspot.com

Re: Photos from Adjumani, Northern Uganda (low-cost UDDTs supported via surcharge on water bill) 23 Jul 2013 16:58 #5117

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Dear Phil, dear Canaday,

please excuse my late response! I have just been posted to Moroto in the Karamoja area of Uganda (which is known as something like the 'wild West' of the region), and Internet access has been difficult or non-existent.

About costs: Concerning one stand toilets for households, we have, in particular, investigated low cost alternatives. As of recent, we have tested some improvements in a training of masons, and I am attaching a view of that latest low cost toilet. It is similar to the older one, but we have been able to reduce costs to about 180 Euro overall. A bill of quantity was derived in the process, which I could send out to those who are interested. A regular toilet of the same design will, of course, cost a lot more, at least twice as much.

For school toilets, we have constructed a toilet with 5 stands and a wash room at 14 mil. UGX in 2009 (devide by about 3000 to get it in Euro). And the washer friendly 2 stand toilet with wetland treatment for the wash water has cost us 3.3 mil. UGX.

Concerning the instructions: The one you are mentioning, Canaday, has been drawn specifically for use at school by one of the pupils (and 'popped up' electronically). We have had bad experiences with school children adding ash themselves because they may misplace it into the urine side and cause cloggings which are very difficult or tidious to remove. So, we have the caretaker add the ash about twice a day after a visual assessment of what has been left behind. As far as I know, many other schools are following a similar approach. In the case of Adjumani, the school children who are allowed to use the ecosan toilet (the upper classes in a primary school) are willingly bringing the ash from home. They are also asked to bring one roll of toilet paper at the beginning of each term, which is kept and handed out by the school.

Hope I have answered your questions, and please feel free to get back to me if something has remained unclear or you need more information.

And concerning the latest low cost toilet, I am planing to include more photos among the ones that are posted at the Flicker Sustainable Sanitation site.
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Hanns-Andre Pitot
Technical advisor water and sanitation
presently in Moroto, Uganda
Last Edit: 06 Feb 2014 10:39 by muench.
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