An initiative of the Center for Environmental Journalism at the University of Colorado Boulder

Uranium cleanup

After more than a decade of work, a federal cleanup project along the Colorado River in Utah is still removing radioactive waste from an abandoned uranium mine that could...

To make less-harmful road salts, we’re studying natural antifreezes produced by fish

De-icing salts can pollute water bodies. Taking a page from nature, scientists hope to develop effective but more benign antifreeze compounds.
The Crystal River flows through the town of Marble just after its confluence with Yule Creek

U.S. Army Corps won’t hold public hearing on marble quarry that relocated Yule Creek

The U.S. Army Corps of Engineers has denied local groups’ request for a public hearing in the case of a marble quarry that violated the Clean Water Act.

Toxic algae blooms in reservoirs near Steamboat detected thanks to new state protocol

Since state officials began a more focused monitoring effort six years ago to detect toxic algae blooms in Colorado’s lakes and reservoirs, testing has documented harmful levels of such toxins three times on the Western Slope.

Despite pandemic, Denver Water’s lead reduction program shows promising early results

One year after it launched one of the largest lead treatment programs in the United States, Denver Water is slightly ahead of schedule.

Gunnison River, with elevated selenium levels, faces review for reclassification

State water-quality officials will soon evaluate whether two water-improvement programs in the Gunnison River basin have successfully reduced a chemical that is toxic to endangered fish.

Well water throughout California contaminated with ‘forever chemicals’

These chemicals are everywhere. They last forever. They’re expensive to get rid of. And many Californians don’t even know they’re drinking them.
water drop wikipedia

What happens when a rural area’s only well is contaminated?

As California’s new requirements for forever chemicals kick in, small providers in remote towns struggle to clean up their water.

Colorado mitigation “bank” to offset wetland damage, meet Clean Water Act rules

A developer who disrupts wetlands or streams can offset that impact by buying credits generated from floodplain and ecosystem restoration.

Pitkin County groups concerned about marble quarry’s impacts on waterways

Local groups are keeping a close eye on a marble-mining company that violated the Clean Water Act with a Yule Creek diversion.