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As wastewater (pre-treated greywater or blackwater) percolates through the soil from the Soak Pit, small particles are filtered out by the soil matrix and organics are digested by micro-organisms. Thus, Soak Pits are best suited to soils with good absorptive properties; clay, hard packed or rocky soils are not appropriate.
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- Pretreatment is required to prevent clogging, although eventual clogging is inevitable. <br> - May negatively affect soil and groundwater properties.
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==Adequacy==
==ReferencesAcknowledgements=={{:Acknowledgements Sanitation}}
* Ahrens, B. (2005). A Comparison of Wash Area and Soak Pit Construction: The Changing Nature of Urban, Rural, and Peri-Urban Linkages in Sikasso, Mali. Peace Corp, USA. Available: http://www.cee.mtu.edu/peacecorps/reports/Brooke
