PFAS stands for per- and polyfluoroalkyl substances, which are a large group of human-made chemicals - currently estimated to be around 9,000 individual chemical compounds - that are used widely in consumer products and industry.
The U.S. Environmental Protection Agency Region 8 (EPA) announced its approval of the Southern Ute Indian Tribe's water quality standards under the federal Clean Water Act.
States will soon be able to set their own tailpipe-emissions limits stricter than the federal government's, thanks to an expected rollback of a Trump-era policy.
Aug. 18, 2021, the U.S. Environmental Protection Agency announced that it will end use of chlorpyrifos - a pesticide associated with neurodevelopmental problems and impaired brain function in children.
Colorado State Senator Jerry Sonnenberg offers praise for Environmental Protection Agency Administrator Andrew Wheeler.
Colorado will join a court challenge to methane standards rollbacks proposed by the EPA.