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Slow Sand Fresh Water Filter

I live in an all-electric home and when the power grid is out we have nothing. No water, no sewer, lights, cooking or anything else. I will have a generator to run sparingly to keep the freezer and the refrigerator going. Our home is a passive solar home with great insulation.

If the Cascadia Subduction Zone earthquake happens, the grid could be out for a year. During that time, with the well pump not working, we will need a source of clean fresh water.

A slow sand filter, made…

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Added by David Culver on November 22, 2016 at 6:54pm — 1 Comment

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