Slow sand water filter construction and operation (a summary from this blog) PDF: $7.50

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The pdf download has 33 pages of info with pictures and descriptions of the working filters described on this blog. Work on slow sand water filters has been going on here since 2008. All of the filters described on this blog are still working, with the exception of the 5 gallon filters. We found that the 5 gallon filters did not work.

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slow sand filter construction details and info