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Biosand Filter Mold Version 10 No Ledge - Fabrication Instructions

This document contains drawings and instructions for constructing CAWST Version 10 biosand filter molds with no ledge for a diffuser plate. This mold will produce filters that must be used with a diffuser basin that hangs from the top of the filter, as there will be no ledge or lip inside the filter on which to sit a diffuser plate.

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About CAWST

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.