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

The Green Fire, burning near Shasta Lake, is now California’s third-biggest wildfire of the year, the Department of Forestry ...

OPINION - Thanks to President Trump’s deep reach into the current makeup of the US Supreme Court, sudden shifts in our ...

Green is California’s fourth-largest wildfire of the year, after Madre, which burned 80,000 acres this month in Central ...

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

Two large wildfires in Northern California, one near Shasta Lake, continue to burn amid extremely hot weather, sending smoke ...

For nearly a month, hundreds of thousands of Iowans have not been allowed to water their lawns—even though there's no drought ...

Nitrate pollution is likely to force more water-use restrictions. Iowa’s problems are uniquely severe: It has plenty of water ...

The Trinity Alps encompasses about 540,000 acres and features massive waterfalls, crystal-clear rivers and creeks, and dozens ...

An estimated 60% of residents who lost their homes in the January firestorms won’t be required to rebuild to the highest fire ...

For nearly a month, hundreds of thousands of Iowans have not been allowed to water their lawns — even though there’s no ...

The Cucamonga Valley was once a wine paradise, the epicenter of California's nascent wine industry. In the early 20th century ...