Apr 6, 2018

3. How the Biosand Filter Removes Pathogens - Biosand Filter Videos

This animated instructional video is one of 9 videos in a series on the operation and maintenance of the biosand filter (BSF). The videos have been designed to educate end users of the filter and as a resource for organizations distributing the filter. The "No Voice" version can be used to dub the videos into a local language. English transcripts are provided. You can download a mobile or desktop app with all of the BSF videos at These videos have been produced by CAWST.

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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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Development of this website and creation of collections of emergency themed tools on Water Treatment, Water Quality Testing, Behavior Change and Sanitation funded by Bureau of Humanitarian Assistance - USAID.

This project is made possible by the generous support of the American people through the United States Agency for International Development (USAID). The contents are the responsibility of CAWST (Centre for Affordable Water and Sanitation Technology) and do not necessarily reflect the views of USAID or the United States Government.

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