I think the point of testing the water is to prove the manufacturers claims. Which they have since changed. They admit now that it does not pull toxins out and that the color has no meaning whatsoever.

The effect and benefit is merely therapeutic. IMO I would sooner opt for a massage. Therepeutic and also beneficial in many other ways.

Same goes for the clay baths, they claim it pulls out metals, there should be metals and toxins in the water, I've yet to see any tests though. Instead they do tests of people before and after. There are far too many variables for that sort of comparison to mean anything at all.