iSSF (Intermittently Operated Slow Sand Filtration System)


The iSSF is a gravity-fed slow sand filtration system.

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Product description Brand name and product description

The iSSF is a large slow sand filtration system that is designed to be intermittently operated as water becomes available. Without requiring electricity, water is gravity fed through sand where bacteria and turbidity are removed.

Target region(s) Target region for distribution/implementation (listed by country if specified)

Cambodia, Philippines, Nicaragua, Kenya, and the Democratic Republic of the Congo (DRC) Interview with CAWST

Distributors/implementing organizations Organization(s) distributing/deploying this product directly to communities/individuals?"
Market suggested retail price Price per unit or service price per usage/terms (USD). Subsidies noted.

Samaritan’s Purse requires a 10,000 USD donation to install a filter. A school requesting a filter from Clear Cambodia are required to invest in the shelter to protect the tanks, costing around 400 to 1000 USD.

Locally sourced components (tanks, sand, valves and pipes) vary in different countries.

Competitive landscape Similar products available on the market. May not be a comprehensive listing.

Primary community-sized sand filters include the SSWM sand filter design and the Jal-TARA Water Filters.

SDG targeted United Nations Sustainable Development Goals (SDGs) targeted with this product/application/service

SDG 6: Clean water and sanitation

Target user(s) Target user/consumer base (country, income segment)

Target users include schools in rural settings and communities.

The @AutodeskFdn blogged about our how-to guide for communities writing proposals for development projects