Drought worsened in southwest Colorado and south-central Nevada, while a wetter pattern is favored for the Four Corners.

Arizona terminated five AgTech land leases in Yuma County after complaints about biosolids, flies, odors and impacts on farms and residents.

The U.S. and Mexico set new Colorado River rules through 2028, including water cuts, storage, salinity and environmental restoration.

EPA will screen drinking water for more than 1,000 potential contaminants, including pharmaceuticals and forever chemicals.

An $81 million pipeline contract moves the Navajo-Gallup Water Supply Project closer to initial water deliveries in 2028.

Climate change, drought and heavier pumping are altering groundwater quality as scientists explore new ways to recharge depleted aquifers.