Department of Environmental Quality

In 2016 Montana became one of the first states to adopt numeric standards for certain river systems. Now, under a law passed during the last legislative session, it’s become the first to repeal them.

Of the Montana schools that have met the state's program deadline, most show high levels of lead in school drinking water.

State regulators are considering whether to approve a mineral exploration license at the site of a former gold mine in north-central Montana.

The Fort Belknap community and the Confederated Salish and Kootenai Tribes filed a lawsuit against the Montana Department of Environmental Quality and its director alleging the agency is not adequately enforcing a “bad actor” law pertaining to new mining permits.

The state of Montana is seeking exceptions to federal air pollution standards in northwest Montana due to wildfire smoke in 2020.

Four newly established advisory commissions will make recommendations to Montana’s governor on how to spend more than $1.5 billion of federal pandemic relief funds.

The state of Montana is adding extra cleanup measures at a former wood treatment plant turned Superfund site in Butte.

The state of Montana released its draft environmental assessment for a waste disposal facility expansion at a hardrock mine in south central Montana and…

State environmental regulators say a former wood treatment plant in Butte needs a new cleanup plan to make the toxic site safer for both people and...