water quality

Pollution from nitrogen and phosphorus can cause excessive algae growth in water.

Montana is changing how it monitors water quality, and some environmentalists are concerned

Kayla Desroches

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.

Tribal Affairs

EPA Reaches Agreements With Tribes Over Water Quality Violations

Aaron Bolton

The U.S. Environmental Protection Agency Tuesday announced that it issued compliance orders to correct violations for water systems on the Blackfeet and...

Environment & Science

Havre's Wastewater Woes Solved By Beer

Several years ago, Havre, Montana had a problem. Its treated wastewater had too many nutrients. Fixing it was expected to cost millions of dollars. But,…

Skye Borden with Environment Montana is collecting samples from the Yellowstone River in Billings to test for microplastics September 12.

Environment & Science

Group Testing Montana Waterbodies For Microplastics

Kayla Desroches

The results of a plastic contamination survey of 50 waterways in Montana is expected in October.Skye Borden, director of Environment Montana, pulls up to…

National Air Pollutant Concentration Averages, 1990-2018.

National Park Snow Samples Show Improved Air Quality

Aaron Bolton

Snow samples from three national parks in the Rocky Mountains reflect improved air quality in the region since the mid-1990s. That’s according to a...