Water

A study by researchers at Arizona State University found swimsuits and swimwear can be a significant source of microplastics in recreational waters like pools and nearby rivers.

As Phoenix continues to set heat records and the future of water in Arizona remains uncertain, some researchers are looking for ways to keep trees healthy with less water. They want to make sure Arizona has more trees to provide shade from the sun, but conserve resources at the same time.

Last week, the Bureau of Reclamation inked three historic water conservation agreements in Santa Fe with the Gila River Indian Community, which thinks it can step up to help take some strain off Lake Mead and stabilize the Colorado River Basin. Less than a week later, they’re already breaking ground on two of these projects.

A bill co-introduced by Sen. Mark Kelly looks to renew a federal program that monitors groundwater quality and availability along the U.S.-Mexico border.

Three and a half months that were supposed to be filled with bipartisan negotiation on rural groundwater management have not yielded a deal between Republican lawmakers and Democratic Gov. Katie Hobbs. They haven’t really been meeting.

Reservoirs across the country are dealing with some of the same problems those in the west have been facing. According to a new study, there are longer periods of unusually low storage in many of the nation’s reservoirs, which has become less reliable.

A new study found that snow melts faster on sunny slopes burned by wildfire.

Local officials in Tucson are throwing their support behind a plan to create an urban wildlife refuge along a portion of the Santa Cruz River that runs through the city.

The town of Marana — just north of Tucson — is suing the federal government over water contamination issues tied to military and airport facilities nearby.

The state Department of Environmental Quality is teaming up with Star Valley to address PFAS contaminating the local drinking water.