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A group of chemicals called PFAS are common in many household items, and potentially causing health problems. Monday, the EPA included them in the draft of its latest list of water contaminants, setting the groundwork for potential regulation.

Since June 2020, a large proportion of Arizona's rivers, lakes and streams have not been protected by the Clean Water Act. That's due to a change to the federal rule the Trump administration made in 2019. The state relied on the landmark law to keep its arid streams free of pollution.But after the federal protections were limited, Arizona decided to come up with its own set of surface water quality standards.

The EPA is finalizing a rule that says it’ll prioritize science that publishes raw data to make policy decisions.

The U.S. government settled a lawsuit Wednesday brought by the state of Utah over a mine waste spill caused by federal workers that sent wastewater downstream to several states from the inactive Gold King Mine in southwestern Colorado five years ago.

In recent years, climate activists and states have used the Clean Water Act to block pipelines and other fossil fuel projects. A new EPA rule makes that harder,

Some of the nation's top polluters are now running on the honor system after the Environmental Protection Agency last week announced relaxed enforcement...

Across the Midwest, millions of acres of farmland have been damaged by dicamba, an herbicide that can harm crops not engineered to withstand it. There are so many cases, regulators can't keep up.

The controversial rule change dramatically reduces pollution protections for many waterways. Farmers and builders approve, but environmental groups plan to challenge it.

A new report shows that a majority of states, including three in the Mountain West, have cut funding for environmental agencies, at a time when the U.S....

The Trump administration has reauthorized the use of "cyanide bombs," a controversial device that kills animals suspected of preying on livestock and...