October 3, 2013

VIDEO: Slow sand water filter for rainwater harvesting tanks

If rainwater from rain water tanks is to be used for potable purposes, it should always be filtered and/or purified. Sand filters are one way of […]
October 19, 2012

VIDEO: How a biosand water filter works

Biosand and slow sand filters are very useful for filtering water for drinking in poor communities or for those who want to go ‘off-grid’ and construct […]