Top 5 Radon Hotspots in the Denver Metro Area
Cities with the highest average user-submitted radon readings in the Denver Metro metropolitan area.
| Rank | City | Avg. Radon Level | Tests |
|---|---|---|---|
| 1 | Fairplay |
12.00 pCi/L
|
9 |
| 2 | Denver |
6.20 pCi/L
|
9 |
| 3 | Aurora |
7.40 pCi/L
|
5 |
| 4 | Parker |
5.40 pCi/L
|
5 |
| 5 | Black Hawk |
13.00 pCi/L
|
4 |
Other Metro Areas in Colorado
Explore radon data for other metropolitan regions across the state.
Cities in the Denver Metro Area
28 cities and towns in the Denver Metro metropolitan area with user-submitted radon data.
28 cities
Erie
Zone 1
20.0
pCi/L
Above EPA action level
Sedalia
Zone 1
20.0
pCi/L
Above EPA action level
Calhan
Zone 1
19.0
pCi/L
Above EPA action level
Bailey
Zone 1
14.3
pCi/L
Above EPA action level
Strasburg
Zone 1
14.0
pCi/L
Above EPA action level
Black Hawk
Zone 1
13.0
pCi/L
Above EPA action level
Florissant
Zone 1
13.0
pCi/L
Above EPA action level
Fairplay
Zone 1
12.0
pCi/L
Above EPA action level
Kiowa
Zone 1
12.0
pCi/L
Above EPA action level
Lafayette
Zone 1
12.0
pCi/L
Above EPA action level
Wiggins
Zone 1
12.0
pCi/L
Above EPA action level
Englewood
Zone 1
10.0
pCi/L
Above EPA action level
Evergreen
Zone 1
10.0
pCi/L
Above EPA action level
Bennett
Zone 1
9.5
pCi/L
Above EPA action level
Conifer
Zone 1
9.0
pCi/L
Above EPA action level
Golden
Zone 1
9.0
pCi/L
Above EPA action level
Commerce City
Zone 1
9.0
pCi/L
Above EPA action level
Aurora
Zone 1
7.4
pCi/L
Above EPA action level
Denver
Zone 1
6.2
pCi/L
Above EPA action level
Brighton
Zone 1
6.0
pCi/L
Above EPA action level
Littleton
Zone 1
6.0
pCi/L
Above EPA action level
Elizabeth
Zone 1
5.7
pCi/L
Above EPA action level
Parker
Zone 1
5.4
pCi/L
Above EPA action level
Morrison
Zone 1
5.0
pCi/L
Above EPA action level
Arvada
Zone 1
5.0
pCi/L
Above EPA action level
Broomfield
Zone 1
5.0
pCi/L
Above EPA action level
Idaho Springs
Zone 3
4.0
pCi/L
Below EPA action level
Peyton
Zone 3
4.0
pCi/L
Below EPA action level
Radon Mitigation Professionals Serving the Denver Metro Area
Licensed contractors who serve this metro area.
| Company | |
|---|---|
| #1 Radon Inc | |
| 1st Step Home Inspections LLC | |
| A Precision Radon Testing | |
| Aames Radon | |
| Aames Radon | |
| Above and Beyond Property Inspections LLC | |
| ACE Radon | |
| ACE Radon | |
| Ace Radon Company | |
| Advanced Radon Mitigation Inc | |
| Affordable Radon LLC | |
| AG Wassenaar Inc | |
| Air Aware Radon Testing Services | |
| Air Radon | |
| All Colorado Radon Mitigation Inc | |
| All Equity Inspections LLC | |
| Alpenrose Radon Testing Services | |
| Alpha Home Inspections LLC | |
| APEX Radon | |
| Appreciation Home Inspections | |
| AsbesTech | |
| Axium Radon Mitigations | |
| Bailey Professional Solutions | |
| Breathe Easy Radon | |
| Bucholtz Inspection Engineer & Services LLC | |
| Colorado Dept. of Public Health & Environment | |
| Colorado Hazard Control LLC | |
| Colorado Mountain Radon LLC | |
| Colorado Peace of Mind Home Inspection | |
| Comfort Home Inspection Services Inc | |
| DCT of Colorado | |
| Defender Radon Systems | |
| Denver Metro Radon Testing LLC | |
| Denver Radon Testing | |
| Freedom Radon Solutions | |
| FRI-Front Range Real Estate Inspectors Inc | |
| Front Line Radon | |
| Front Range Radon LLC | |
| Full Spectrum Inspections LLC | |
| Home Inspection Pros LLC | |
| Inspect-It 1st | |
| Inspectrum | |
| Inspex Home Inspections LLC | |
| L & R Plumbing LLC | |
| Legacy Home Inspections | |
| Magpie Property Inspections LLC | |
| Mountain Mitigations | |
| National Property Inspections of Colorado | |
| Professional Advantage Radon Mitigation & Measurement Provider | |
| Radon Engineering Consultants East Inc | |
| Radon Seal LLC | |
| Radon-I-Nator LLC | |
| RamGam Radon Services LLC | |
| RDS Environmental Inc | |
| Rocky Mountain Radon Control Inc | |
| S.W.A.T. Environmental | |
| S.W.A.T. Environmental | |
| The Radon Guys LLC | |
| Turnstone Home Inspections LLC | |
| US Inspect LLC | |
| US Inspect LLC | |
| USA Home Inspections | |
| Waddle Radon |
Frequently Asked Questions about Radon in the Denver Metro Area
Common questions about radon testing, mitigation costs, and health risks for homeowners in the Denver Metro metropolitan area.
Why are radon levels so high in the Denver Metro area?
Radon levels in the Denver Metro area are driven by the local soil and bedrock composition, which contains naturally occurring uranium. As uranium decays, it produces radon gas that migrates upward through the soil and enters homes through foundation cracks, sump pits, and gaps around pipes. Homes with basements and crawlspaces are especially susceptible because these below-grade spaces are in direct contact with the soil where radon concentrations are highest.
How much does radon mitigation cost in Denver Metro?
Professional radon mitigation in the Denver Metro metropolitan area typically costs between $800 and $2,500, depending on the size and construction of your home. The most common approach is an active sub-slab depressurization system, which a certified contractor can usually install in a single day. Ongoing energy costs for the mitigation fan are minimal—roughly $5–$10 per month—and most systems reduce radon levels by 90% or more.
Are landlords in Colorado required to test for radon?
Radon testing and disclosure requirements vary by state and municipality. Some Colorado jurisdictions require landlords to disclose known radon levels or test results, while others have no mandate. Regardless of local law, the EPA recommends radon testing for all residential properties—including rentals—since radon is the second leading cause of lung cancer in the United States.
Can I sell a house with high radon levels in the Denver Metro area?
Yes. High radon levels do not prevent a home sale, but buyers in the Denver Metro market routinely request radon testing during the inspection period. If levels exceed 4.0 pCi/L, the buyer may negotiate for the seller to install a mitigation system before closing. Having a radon mitigation system already in place can actually be a selling point, demonstrating proactive home maintenance and providing documented proof of safe indoor air quality.