My goodness my grandparents home had stone cistern in the ground, that collected rain water off the roof, and did so until the early 1970's, bird poop, wasp nests, leaves, all filtered only with a rusty window screen. It's interesting that "no tech" will become high tech some day. After a rural waterline went to her home, she continued to use "cistern water" for her garden. She did get her first automatic washer when the waterline came, but after 30 years of a wringer, i figure she did her part.