Environmental Protection Agency
Air quality improved slightly during the stay-at-home order. But Colorado still has a serious pollution problem.
Officials have until June 2021 to meet a ground-level ozone compliance deadline set by the federal Environmental Protection Agency.
Top Stories
Colorado, Denver join 25 other cities and states in suing EPA for relaxing clean-car rule
By Tamara Chuang Transportation Primary category in which blog post is published
Trump administration’s effort to roll back NEPA environmental law draws ire at Denver hearing
By The Associated Press Environment Primary category in which blog post is published
Opinion: Environmental protection and infrastructure development are not mutually exclusive
By Val Vigil Opinion
Opinion: Stronger methane rules will benefit the West Slope and Front Range alike
By Eva Henry Opinion
Colorado attorney general taking hard look at Trump administration’s clean-water regulations rollback
Democrat Phil Weiser says if the Environmental Protection Agency rolls back the Waters of the United State rule beyond a certain point, he could take legal action
In a twist, Colorado asks the EPA to lower the state’s air rating from “moderate” to “serious”
The EPA will hold a Friday hearing on whether to lower the ozone status of Denver and eight other northern Colorado counties from "moderate" to "serious"
Aurora spent $34 million on water from a toxic mine. It’s not as crazy as it sounds.
The plan to tap the aquifer above Park County's London Mine could provide a template for how thirsty cities can draw on new sources of clean water, while also cleaning up polluted mine runoff
A tiny garden in Boulder is showing signs of stress from smog. The scientist behind it is thrilled.
Four types of plants growing near the entrance to NCAR are part of a nationwide network of gardens where citizen scientists and climate researchers collect data about the impact of ground-level ozone
Denver, northern Colorado fall short on EPA clean air rules
The move was expected after Democratic Gov. Jared Polis said in March the state wouldn't ask for an exemption based on pollution drifting into Colorado from China and elsewhere
Controversy over Denver Water’s Gross Reservoir expansion offers a glimpse into water woes in the West
Raising the 55-year-old dam near Boulder is essential to keep a stable water supply in a changing climate, utility says. Residents insist conservation could be just as effective.
