Slow Sand Filter

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: 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 www.slowsandfilter.org and www.shared-source-initiative.c… for lots more information on these filters. Also www.roofwaterharvesting.org and 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: www.micrologylabs.com/categor… What kind of sand to use: www.enlight-inc.com/blog/?m=20… www.enlight-inc.com/blog/?m=20… The water test results from this filter (called filer 1) can be found at our website here: 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.