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{{santable|
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{{santable|
Input1=Blackwater|Input2=Greywater |Input3=Anal cleansing water| Input4= |Input5=|
Output1=Compost - EcoHumus| Output2= | Output3= | Output4= | Output5=
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- Can be built and repaired with locally available materials. <br> - Because double pits are used alternately, their life is virtually unlimited. <br> - Excavation of humus is easier than faecal sludge <br> - Potential for use of stored faecal material as soil conditioner. <br> - Flies and odours are significantly reduced (compared to non-ventilated pits). <br> - Suitable for all types of user (sitters, squatters, washers and wipers). <br> - Low (but variable) capital costs depending on materials; no or low operating costs if self-emptied. <br> - Moderate reduction in pathogens. <br> requires much less water to be used for flushing as compared to conventional toilets. <br> The latrine doesn’t need to be moved when the pit is full. | con=- Excreta require requires manual removal. <br> - Clogging is frequent when bulky cleansing materials are used
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The pits must be emptied regularly and care must be taken to ensure that they do not flood during rainy seasons. After a recommended two year resting time, the pits should be emptied manually using long handled shovels and proper personal protection. If the pits are self-emptied there are no operational costs except for any replacements to the structure or slab in the event of damage.
== Sulabh toilets==
The Indian NGO Sulabh International designed a system using pour flush toilets and twin pits for treatment of sanitation products. They have constructed over a million toilets in India. They further designed a system which converts the effluent into biogas. These technologies are now used by 10 million people in rural India. This contributed greatly to the increase in number of people using a toilet, from 27% to 59% in the last 5 years. They have also built public toilets in Afghanistan, Bhutan, Ghana, Ethiopia, Madagascar, Mozambique, Laos, and Cambodia. They are planning to start up Sulabh Sanitation centres in 50 more countries soon.
==Acknowledgements==
{{:Acknowledgements Sanitation}}
