Indoor burning frequently requested information
- Environmental Protection Agency (EPA)-certified Phase II stoves or inserts.
- Colorado-approved pellet stoves or inserts.
- Colorado-approved masonry heaters.
- Pollution Action Day restrictions generally apply to seven counties in metro Denver:
- Adams and Arapahoe counties west of Kiowa Creek.
We have enforcement jurisdiction only in areas without local ordinances at least as restrictive as the state regulation. Most of the seven-county metro Denver area falls under the jurisdiction of local ordinances or regulations.
Contact your city or county government to inquire about local enforcement procedures.
- When we receive a complaint about an alleged violation, we send a letter that describes the indoor burning program and urges compliance.
- If the party allegedly responsible still doesn’t comply, we begin an investigation.
- If investigators find the responsible party isn’t complying with regulations, we issue a Notice of Violation (NOV). This requires a conference between the responsible party and state regulators.
- After the conference, three things can happen:
- Investigators may determine that the party allegedly responsible didn’t violate regulations.
- A nonmonetary settlement can be reached by which the responsible party agrees to adhere to all indoor burning regulations.
- A monetary fine may be assessed.
- Fines can be up to $15,000 per day.
- Most likely, any fines assessed will be $100 to $300.
- Our goal isn’t to fine people; it’s to get people to comply with the regulations. We’ll take every step to bring people into compliance with regulations rather than assess a fine.
- Non-catalytic stoves must emit no more than 7.5 grams per hour of particulates.
- Stoves equipped with a catalytic device must emit no more than 4.1 grams per hour of particulates.
We post advisories on our website during the high pollution season. Go to the indoor burning restrictions page to see the latest advisory. For current information during the high pollution season, you can call the 24-hour Air Quality Advisory hotline:
The Air Quality Bulletin hotline carries current advisory information during the high pollution season and other pollution information year-round:
Many local newspapers, radio and television stations provide updates.