The SSD project recently conducted integrity tests of toilets and sanitation systems built by micro-contractors over two years ago. In Abidjan, this test was carried out in the municipality of Yopougon where the first sanitation facilities were constructed. This test involved eight structures including septic tanks and soak away pits and concluded that the septic tanks were filling normally. The walls were still intact, with a good distribution of sludge in the compartments. As for the soak away pits, the test confirmed the initial hypothesis, namely, a good infiltration of the overflow from the septic tank into the ground, with intact concrete rings as they were installed. However, the water level in the pits was too high, which showed that the infiltration area must be increased. Improvements to the design are now being incorporated.

In Benin, SSD project technical team conducted a survey of 18 users of Mimin latrines to check the level of pit filling in the municipalities of Abomey-Calavy and Porto Novo. At the end of the survey, it was found that only 35% of the pit for double pit latrines were filled after two years of use, which is a good level. 94% of the customers visited during this survey said they were satisfied with the use of the WC Mimin.