1) American Water Works Association (AWWA)
6666 W. Quincy Avenue
Denver, Colorado 80235-3098
303-794-7711

2) NSF International (National Sanitation Foundation)
P.O. Box 130140
Ann Arbor, Michigan 48113-0140
877-867-3435 (877-8-NSF-HELP)

3) Underwriters Laboratories, Inc. (UL)
333 Pfingsten Road
Northbrook, Indiana 60062-2096
877-84-3577

4) Water Quality Association
4151 Naperville Road
Lisle, Illinois 60632-3696
630-505-0160

Water is sometimes advertised as “Kosher certified,” which is no big deal, since FDA-approved food-grade chemicals are also Kosher certified.

“How do you tell if you’ve been exposed to a dangerous dose of arsenic? It’s relatively simple: you clip a sample of your hair or finger- or toenail, and send it to a lab. But then what? The test can’t tell you whether you’ll get cancer, and there’s no treatment for exposure, only relief from symptoms of illness.”

But there IS a treatment for arsenic exposure. As just one example, selenium reduces arsenic toxicity.

S. Sah, A. Vandenberg, & J. Smits (“Treating chronic arsenic toxicity with high selenium lentil diets,” Toxicology and Applied Pharmacology, Oct. 1, 2013) wrote …

“To achieve this, we compare diets based on high-Se [high-selenium] Saskatchewan (SK) lentils versus low-Se lentils from the United States.”