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

Treating drinking water to tackle multiple pollutants could prevent more than 50,000 cancer cases in the U.S., a new study found.

The curious minds at ColdFusion investigate how California allowed billionaires to control the state’s most precious resource: water.

Residents of the Diablo Grande community in Central California have seemingly made a deal with the devil: they've voted to increase their water bill by nearly $600 a month.

Officials are shoring up water systems infiltrated by the golden mussel. Dogs and human inspectors are checking boats at some lakes, but a patchwork of oversight leaves many lakes unprotected ...

The Madre Fire in San Luis Obispo County grew to 52,500 acres entering the Fourth of July weekend. See where California wildfires are burning.

This story was originally published by CalMatters. Sign up for their newsletters. One of the state’s best investigators was on the hunt for golden mussels — a dangerous new invader in ...

In 2024, only one wildfire was bigger than Madre’s current size — Park, which started on July 24 and became the second-largest single fire in California history.

The trucks (and the volunteers inside them) were on a time-sensitive mission: refilling artificial water sources in the California desert for parched bighorn sheep.

A tsunami has sent waves into Russia, Japan, Hawaii and the West Coast of the United States after an 8.8-magnitude earthquake ...

Breaking down California’s recently-passed state budget and CEQA reforms. How the lack of menopause research affects accessing treatment and care. Finally, summer classes being offered at SFSU ...

Last year, California expanded victims’ leave provisions with Assembly Bill (AB) 2499. AB 2499 required the California Civil Rights Department (CRD), which is responsible for enforcement of the ...