Monthly Archives: April 2013

Slow sand filter study: lessons learned

We were recently contacted by a local water district representative regarding setting up some slow sand filters for schools’ irrigation water supply. They wanted a “green” “sustainable” technology to filter water from their rainwater / roofwater harvesting system. In speaking … Continue reading

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Update on filter 4, and 5

Filter 5, the newest addition to the project, has been filtering water since the last major below freezing weather event (about 6 weeks) using only gravity feed, and manual re-circulation using a 5 gallon container. No electrical power or pumps … Continue reading

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