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Oct 28, 2021

Soil Composition Jar Test

In a crisis, time is of the essence. Sanitation needs must be met, but there is little time to respond to the growing needs and even less time to think about the impact of decisions made quickly. Pits for latrines are frequently dug without careful consideration of the soil composition. Over time, unstable soil can result in a collapsed pit, putting latrine users and emptiers at risk and threatening public and environmental health.

Time taken to assess soil stability before building the latrines is time well spent. This job aid will show you how to conduct a simple jar test to assess the soil composition. Later you can use the results from the test to determine an appropriate pit lining that will prevent collapse.

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CAWST is a Canadian charity and licensed engineering firm. We address the global need for safe drinking water and sanitation by building local knowledge and skills on household solutions people can implement themselves.

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