One is alkaline, which you drink, and the other is acidic, which you use to brush your teeth and wash your skin with. Most toothpaste is toxic, and leaves a residue. The acid water has neither of these problems. Unfortunately, it would take some very creative plumbing to put the machine under the sink. The Watershed also sells a shower filter to remove chlorine, which is important.
Chlorine is quite toxic when inhaled.
A shower filter should be of the copper-zinc variety because it will not clog up, has a long life, and restricts the water flow little. It goes into great detail about what you can DO about the problem, while some books just rave on and on about pollution. I would welcome your personal contribution to this collection of information. Bonsai images by Horace Vallas . Last update June 8, 2000.