Cambodia is full of water: it’s abundant in shallow ponds and marshlands, but it isn’t safe to drink. The BioSand Filter is a simple, low-cost solution that cleans water quickly by using a biological process to take out 99% of the bacteria found in dirty water.
Dirty water is collected from ponds, then poured into the top of the BioSand Filter.
This is the first and most important layer: a biological film made of microorganisms eats 99% of harmful bacteria in the dirty water.
A layer of specialized sand physically traps any remaining bacterial particles.
The coarse sand begins to separate the clean water from the particles of fine sand.
The gravel layer serves as an elevation bed and keeps sand away from the pipe opening.
Clean water comes out of the spout as it’s forced out by additional dirty water poured through the top.
Families must show that they’re serious about bringing a BioSand Filter into their home. In order to show their interest, they contribute a small amount of their own money for the building materials, attend a hygiene training class, and build their own filter under the supervision of local masons. This approach ensures that the program will have lasting results long after our partners leave the village.Learn More
We started funding the work of CLEAR Cambodia in 2009, supporting their vision of helping rural Cambodians improve their health through better access to clean, safe water. Since 1999, the CLEAR staff have been working in collaboration with community leaders and local authorities to implement low cost, sustainable clean water solutions in rural villages.Visit CLEAR Cambodia's Site