Intermittently Operated Slow Sand Filtration (iSSF) Manual
This technical manual, written by Samaritan's Purse Canada and CAWST, is a guide for potential implementers of the intermittently operated slow sand filter (iSSF, also called the school biosand filter). This manual outlines principles and best practices for adapting, installing, commissioning and maintaining the filtration system.
Intermittently Operated Slow Sand Filtration (iSSF) Manual
This technical manual, written by Samaritan's Purse Canada and CAWST, is a guide for potential implementers of the intermittently operated slow sand filter (iSSF, also called the school biosand filter). This manual outlines principles and best practices for adapting, installing, commissioning and maintaining the filtration system.
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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.