Siem Reap, Cambodia & Bristol, RI – EIN 311630212 waterforcambodia.org
Since 2006 Water for Cambodia has been building and installing biosand water filters in rural villages of Cambodia. These filters are household units that produce clean water directly from contaminated sources. Polluted water is poured in the top, filtered through the sand and gravel layers and within minutes clean drinking water pours from the spout. Filtered water looks and tastes good, an advantage over well water where high iron content has an offensive taste and color. One filter can produce enough clean water for a family of 5-8 for many years.
According to a summary of laboratory and field studies for biosand filters conducted by the Center for Affordable Water and Sanitation Technology (CAWST.org) they remove the following from contaminated water:
up to 98.5% of bacteria
up to 99.9% of protozoa
up to 95% of turbidity
90-95% of iron
For more information on the technical aspects of the biosand filter visit www.cawst.org.