Henderson, CO Radon Mitigation and Testing

Q: What EPA Radon Zone is Henderson in?

Henderson is in Adams County, EPA Zone 1.

Q: How much does radon mitigation cost in Henderson?

Radon mitigation typically costs between $800 and $2,000. Most standard systems fall in the $1,000-$1,500 range.

Adams County

EPA Zone 1

Located in Adams County within the Denver Metro area, Henderson sits on Colorado's High Plains where uranium-bearing soils and sedimentary bedrock contribute to elevated radon potential throughout the region. Testing data for this community is currently limited, though Colorado's well-documented radon concerns make professional testing essential for all residents. The state's geological conditions and high altitude can create particularly challenging radon scenarios for homeowners.

Henderson, CO Radon Mitigation

Professional radon mitigation is the most effective way to permanently lower radon levels and protect your household.

Henderson, CO Radon Testing

Finding qualified radon testing professionals is the first step toward protecting your home.

Henderson Radon Facts

Key details about the radon risk profile for Henderson and the 80640 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Adams County, CO

Zip Code

80640

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Henderson and the 80640 zip code are located in Adams County, which has an EPA assigned Radon Zone of 1. A radon zone of 1 predicts an average indoor radon screening level greater than 4 pCi/L. The EPA recommends testing every home regardless of zone classification.

Radon FAQ for Henderson, CO

What EPA Radon Zone is Henderson in?

Henderson and the 80640 zip code are in Adams County, which has an EPA assigned Radon Zone of 1. A zone of 1 predicts an average indoor radon screening level greater than 4 pCi/L.

How much does radon mitigation cost in Henderson?

Radon mitigation in Henderson typically costs between $800 and $2,000. Most homes with standard basements can be mitigated with a sub-slab depressurization system in the $1,000–$1,500 range. Factors that can increase cost include complex foundations, crawl spaces, or very high radon levels.

Should I test for radon if I'm buying a home in Henderson?

Yes. Radon testing should be part of every home purchase. A short-term radon test is typically included as part of the home inspection process and costs $150–$250. If elevated levels are found, you can negotiate mitigation as part of the sale.

Most Active Radon Markets in Colorado

Cities with the most user-submitted radon test data in the state.

City	Avg User Radon Level	Submissions
Fairplay	12.00 pCi/L	9
Crested Butte	8.56 pCi/L	9
Denver	6.22 pCi/L	9
Montrose	9.25 pCi/L	8
Gunnison	7.38 pCi/L	8
Buena Vista	12.57 pCi/L	7
Pueblo	10.67 pCi/L	6
Grand Junction	8.17 pCi/L	6
Bayfield	6.00 pCi/L	6
Canon City	10.80 pCi/L	5
Aurora	7.40 pCi/L	5
Windsor	7.00 pCi/L	5
Telluride	6.80 pCi/L	5
Parker	5.40 pCi/L	5
Salida	15.50 pCi/L	4
Johnstown	9.50 pCi/L	4
Granby	9.00 pCi/L	4
Longmont	8.00 pCi/L	4
Edwards	6.75 pCi/L	4
Mancos	6.00 pCi/L	4