California water: 10 charts and maps that explain the state’s ... The U.S. Environmental Protection Agency maintains a map that shows air quality and smoke direction from major fires in ...

According to a study, various parts of the state have levels of arsenic in drinking water at higher than 5 micrograms per ...

California Map Shows Beaches People Are Being Warned to Stay Out of Water. Published Feb 21, 2025 at 3:48 PM EST Updated Feb 21, ... Large rain events also impact water quality." ...

April 23--The California Environmental Protection Agency has released a statewide list of census tracts most burdened by pollution, providing a first-of-its-kind ranking certain to pressure ...

WASHINGTON — The Trump administration warned California officials Thursday that the state is “failing” to meet federal water quality standards, the latest move in the president’s ...

California State Parks says that golden mussels “pose a significant threat to the ecological health of all waters of the state, its water conveyance systems, infrastructure, and water quality.” ...

This map shows how communities are listed in California’s nine-tier system that penalizes the state’s biggest water users. Water suppliers are assigned to a tier of water reduction based on ...

California and EPA Poised to Expand Pollution of Potential Drinking Water Reserves. A little-known program under federal environment law is being used to permit oil and gas companies to inject ...

Rocklin, a suburb in Sacramento, Calif., has cut its water use by one third over the past year as the state is going through one of the most severe droughts on record. (Photo: Max Whittaker/Prime ...

Water is tested regularly, and once bacteria no longer exceeds state standards, the warning will be lifted. Update 2/21/25, 5:40 p.m. ET: This article was updated to include comment from the Los ...