Monthly Archives: February 2013

Rainwater harvesting regulations state by state

Update; September 16, 2016:   We have been getting some posts documenting the harassment of citizens by local authorities in regards to collecting rain water.  I’ve checked these out to the best of my ability, and found most of them to … Continue reading

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Water quality tests on filter 4

Above are the tests on filter 4 after 3 weeks of running, following being frozen solid for the month of January, 2013. The filter has not had enough water running through it to completely restore the active bio-layer. The roof … Continue reading

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Backwashing a slow sand filter

A few notes here about backwashing  a small slow sand filter. This mainly applies to DIY (Do It Yourself) filters, with one exception noted below in the next paragraph.  Do not forcefully backwash your DIY slow sand filter. You may very well … Continue reading

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Water quality tests on a DIY slow sand filter

The filters described on this blog and the associated websites have been tested by 2 different EPA certified laboratories: AmTest in Kirkland Washington, and The city of Everett, Washington environmental lab The test results can be found here and here. … Continue reading

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