rainwater harvesting combined with slow sand filter

Tue, Dec 12, 2017
rainwater harvesting Rooftop water harvesting Slow Sand Filter slow sand filter


Published on Feb 17, 2010
Capture the rain! (Now legal in Washington state). A quick look at roof water harvesting using a slow sand filter combined with a diverter. This is an overview of the procedure and a demonstration of a working system. An instructional video on how to build a system can be found here: http://www.youtube.com/watch?v=S-_RDB… As of September 18, 2016 this filter is still running and producing clean water. The sand has not been changed. See http://www.slowsandfilter.org and http://www.shared-source-initiative.c… for lots more information on these filters. Also http://www.roofwaterharvesting.org and http://www.enlight-inc.com/blog/ are two sites that have detailed instructions on how to build one of these filters. Do your own water testing: https://www.micrologylabs.com/categor… What kind of sand to use: http://www.enlight-inc.com/blog/?m=20… http://www.enlight-inc.com/blog/?m=20… The water test results from this filter (called filer 1) can be found at our website here: http://slowsandfilter.org/results_fou… Scroll about half way down the page. There’s lots of info there, and more than just one test has been done. The filter works.