On Sun, 10 Aug 2008 12:13:19 -0700, "Walter R."
wrote:

Hardness is about 15 grains. Comes from the Colorado River: Too thick to
drink, too thin to plow. No other problems.

I'm not far from Lake Mead. Your water must soften, before it gets
there

Your water authority most likely publishes reports on the water
quality/hardness... iirc, hardness here was higher. It was suggested
in my readings that the hardness setting (?!) be bumped up.

I don't have the link, but maps are posted to show water hardness
around the country. Las Vegas is the worst IME.