I use these filters to make a homemade tap water filter out of two 2 gallon food buckets. Of course, I didn't test the purified water in a lab to back up the claims, but filtered water was chosen in blind tastings every time. We use it for all our drinking water needs, plus it was a fun little project. 11-6-18: still in force. It removes so much dirt from the tap water that brown goo forms on the ceramic. About once a month I wash my scrub brush and keep using it.
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