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The pond should be built to a depth of 2 to 5m and should have a detention time of 3 to 20 days. To prevent leaching, the pond should have a liner. The liner can be clay, asphalt, compacted earth, or another impervious material. Using the fill that is excavated, a protective berm should be built around the pond to protect it from runoff and erosion.
{{procontable | pro=
- Effluent/sludge requires secondary treatment and/or appropriate discharge. <br> - Requires expert design and construction supervision. <br> - Requires full time operation and maintenance by skilled personnel. <br> - Not all parts and materials may be available locally. <br> - Constant source of electricity is required. <br> - Moderate-high capital and variable operating costs depending on the price of land, electricity.
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==Adequacy==
A permanent skilled staff is required to repair and maintain aeration machinery. The pond must be desludged once every 2 to 5 years. Care should be taken to ensure that the pond is not used as a garbage dump, especially considering the damage that could be done to the aeration equipment.
==Acknowledgements==
{{:Acknowledgements Sanitation}}
==Referencesand external links== * Elizabeth Tilley et.al (2008). [http://www.eawag.ch/organisation/abteilungen/sandec/publikationen/publications_sesp/downloads_sesp/compendium_high.pdf Compendium of Sanitation Systems and Technologies] ([http://www.eawag.ch/organisation/abteilungen/sandec/publikationen/publications_sesp/downloads_sesp/compendium_low.pdf low res version]). Department of Water and Sanitation in Development Countries ([http://www.sandec.ch/ Sandec]) at the Swiss Federal Institute of Aquatic Science and Technology (Eawag). (Provides a full overview of sanitation systems.)
* Arthur, JP. (1983). Notes on the Design and Operation of Waste Stabilization Ponds in Warm Climates of Developing Countries. The World Bank + UNDP, Washington. (Notes on applicability and effectiveness.)
