Hydraid® BioSand Filter

E. Neal Caldwell, John Kevin Hodges

The Hydraid® BioSand Water Filter is a patented, lightweight, household, point-of-use filter powered by gravity. The filter employs open-source design BioSand Filtration technology but uses a lightweight plastic vessel instead of a concrete one. It is suggested that this technology is more portable, scalable and affordable compared to traditional concrete filters.

Product description

The Hydraid® BioSand Water Filter is a patented, lightweight, household, point-of-use filter powered by gravity. The filter employs open-source design BioSand Filtration technology but uses a lightweight plastic vessel instead of a concrete one. It is suggested that this technology is more portable, scalable and affordable compared to traditional concrete filters.

Target region(s)

Today there are more than 75,000 Hydraid water filters in 46 countries. Specific countries are unknown.

Distributors/implementing organizations

Triple Quest – a collaborative social enterprise between Cascade Engineering and The Windquest Group (a West Michigan private investment fund) partners with entrepreneurs and NGOs in the developing world to make the Hydraid biosand filters available. Hydraid works with the local organizations to import the plastic containers, create the sand filter, and educate users.

Market suggested retail price

The capital cost of the Hydraid is $25 – $75 USD depending on subsidy. NativeEnergy, offsets costs via carbon credits to help finance filter production and implementation; Program, transportation and education costs are not included. Costs will vary depending on location.

Competitive landscape

Membrane filtration systems, Community scale purification systems, Point-of-use filtration equipment, Chlorination and other Biosand Filters

Target user(s)

Households without access to clean water in the developing world.

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