California's drinking water has elevated levels of a certain contaminant found to be associated with adverse birth outcomes, causing experts to advise that safe water advisories need to be updated.

LOS ANGELES (AP) — California regulators voted Wednesday to establish a drinking water limit on hexavalent chromium, a toxic chemical compound made infamous by the movie “Erin Brockovich.” ...

California's new rules would let — but not require — water agencies take wastewater, treat it and then put it right back into the drinking water system. California would be just the second ...

SACRAMENTO, Calif. (AP) — When a toilet is flushed in California, the water can end up in a lot of places: An ice skating rink in Ontario, ski slopes around Lake Tahoe, farmland in the Central ...

California public health officials are touting the safety and health benefits of fluoride in drinking water, as U.S. Health Secretary Robert F. Kennedy Jr. reportedly revealed plans to curtail the ...

In an effort to reduce that exposure in drinking water, California lawmakers introduced Assembly Bill 794 (AB 794). The bill would mandate the California State Water Board to implement statewide ...

Exposure to Legacy Per- and Polyfluoroalkyl Substances from Diet and Drinking Water in California Adults, 2018–2020. Environmental Science & Technology, 2025; DOI: 10.1021/acs.est.4c11872; ...

A mandatory boil water notice was issued for the Five Cities area of California, with residents advised not to drink tap water unless it has been boiled for at least one minute ...