Montana Department of Environmental Quality

In a neighborhood near the mining town of Butte, many people have a hard time believing the air they are breathing is safe.

Montana and Wyoming will receive millions of dollars each over the next five years to build up their electric vehicle infrastructure.

The state Department of Environmental Quality is at odds with a governor-appointed board over a rule that could limit pollution levels in a northwest Montana lake.

The Montana Department of Environmental Quality announced Monday that the agency has awarded grants to increase the number of electric vehicle charging stations throughout the state.

The operator of the coal-fired power plant in Colstrip and Montana state regulators have finalized a plan to clean up pollution at the plant’s two retired units.

A federal appeals court says that the state of Montana and the U.S. government are within the bounds of the law in granting three dozen Montana wastewater treatment plants an exception to clean water standards.

A shuttered southwest Montana gold mine that plans to extract metals from its mining waste is one step closer to state approval Friday.

Environmental regulators say a natural gas plant proposed for construction in south central Montana satisfies the state’s air quality standards.

The state of Montana today announced its chosen method of cleanup at a Missoula railyard.