California regulators voted Wednesday to establish a drinking water limit on hexavalent chromium, a toxic chemical compound made infamous by the movie "Erin Brockovich."
The rule is the first in the nation to specifically target the heavy metal, known as chromium-6, and is expected to reduce the number of cancer and kidney disease cases from long-term ingestion, state officials say.
The proposal was unanimously passed by the State Water Resources Control Board, though it needs approval from...