This was a large project over several months where I helped people improve the drainage of their latrines. Like the women washing dishes, most latrine run-off collected in the streets and provided a breeding ground for mosquitoes and another diseases. On several occassions I watched children playing in these puddles and animals drinking from them and the thought of the diseases that were being spread horrified me. So the concept is the same, the water drains out of the latrines into a covered hole where it soaks back into the soil.