… But Only In California
Even rain water cannot meet California’s proposed limits on hexavalent chromium ( aka chromium-6, Cr(VI), “Erin Brockovich Chemical” ). The .06 ppb ( part per billion ) limit is more stringent that the .08 ppb actually present in rainwater. ( See Kieber et al, Environ. Sci. Technol., 2002, 36 (24), pp 5321–5327 ) In fact, certain areas have rainwater which greatly exceed the the proposed standard, with 10 to 30 times higher concentrations.
Let the Enviro-Scare Begin
In the shadow of California’s announcement, various environmental groups and the Water Purification Industrial Complex have jumped on the bandwagon. The EWG’s report makes it sounds as if most municipal water supplies are unsafe, cause cancer, and so on. They disclose their bias with the cover of the report:
And on the landing page for their chromium web site:
But read the report. With the exception of Norman, OK the highest levels detected were within 10 times the amount found in rain water. So if this is such a ghastly toxin, its practically everywhere in comparable amounts. If its in the rain, its in your vegetable garden.