The Environmental Protection Agency has rejected Arizona’s approval of an air pollution permit for a new mine in the Patagonia Mountains south of Tucson.

"An expensive, unnecessary, and environmentally disastrous project." Administration faces backlash over 'catastrophic' plan ...

The Pima County Department of Environmental Quality (PDEQ) has declared an Ozone Action Day for the Tucson metropolitan area.

The Environmental Protection Agency on Thursday announced $30 million in funding for Tucson and Marana to treat the hazardous chemicals in the area’s drinking water supply. Per- and ...

Tucson Water, the city's water utility ... According to the Arizona Department of Environmental Quality, the “contaminants of concern” may change as new data becomes available.

A recent study by Soliant has identified the U.S. cities where residents face the greatest health risks.  Factors such as ...

High-profile Democratic congressional candidates Adelita Grijalva and Daniel Hernandez Jr. clashed over tax and environmental ...

Mike Jette is known by many because of his career as a prosecutor, and also as a dedicated environmental leader. Mike served for years as president of the board of directors for Tucson Clean ...

In April, the EPA, the Environmental Protection Agency ... One of the first places in line for that money is Tucson, Ariz. Alisa Reznick with member station KJZZ reports. ALISA REZNICK, BYLINE ...

A project organized by Arizona-Sonora Desert Museum tests if sheep can help control invasive buffelgrass and cut wildfire risk in Sentinel Peak Park.

Tucson is a long way from my hometown of Jackson, Wyoming, but I probably don’t have to tell you how quickly this place can feel like home.