Letter Re: Black Berkey Water Filter Problems
Hello Mr. Rawles: I expect you have already heard about this problem, but the black Berkey water filters have an alarmingly high failure rate (in my personal experience, for what it’s worth, 4 out of 4). The silicone caulk that attaches the black ceramic-like filter itself to it’s plastic base fails, and water runs right through the failure spot, without being passed through the filter material. People could be unknowingly drinking unfiltered water, as I was. I read online that adding red food coloring is one way to test the integrity of the filter unit, I do not know if …