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…Continue