Henderson, CO Radon Levels

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.

Check local Henderson radon levels and find certified testing and mitigation professionals to keep your home safe

Henderson, CO Radon Facts

EPA Radon Zone Zone 1 — High Risk > 4.0 pCi/L (Zone 1)

County Adams County, CO

Zip Code 80640

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.

8.00

pCi/L area average

Above EPA Action Level

Adams County average: 8.00 pCi/L, based on 8 user-submitted tests across 4 cities in the county. No homeowner readings have been submitted for Henderson itself yet, so this county figure is the closest available benchmark. The EPA recommends taking action at or above 4.0 pCi/L.

4.0 EPA

10+

Henderson, CO Radon Mitigation

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

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Radon Readings Near Henderson, CO

No homeowner tests have been submitted for Henderson yet. The closest cities with user-submitted radon data are shown below — explore them to gauge local conditions. Radon varies by home, so testing is the only way to know your level.

City	Distance	Avg User Level	Readings
Brighton	4.6 mi	6.00 pCi/L	2
Commerce City	5.4 mi	9.00 pCi/L	1
Broomfield	10.3 mi	5.00 pCi/L	1
Denver	12.5 mi	6.22 pCi/L	9
Arvada	13.7 mi	5.00 pCi/L	2
Lafayette	13.7 mi	8.00 pCi/L	2
Aurora	15.1 mi	7.40 pCi/L	5
Erie	15.3 mi	20.00 pCi/L	1

Adams County Radon Profile

Adams County falls in EPA Radon Zone 1, meaning the local uranium-bearing geology is predicted to drive average indoor radon screening levels above the EPA's 4 pCi/L action threshold. Homeowner-submitted tests from 4 cities in Adams County average 8.00 pCi/L across 8 tests — above the EPA's 4 pCi/L action level, reinforcing the need for testing across the county. Since radon is the second leading cause of lung cancer nationally, the EPA urges every household in Adams County to test, as levels can differ between neighboring homes.

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.

Why are radon readings shown from areas near Henderson?

No homeowner radon tests have been submitted for Henderson yet. Because radon is driven by regional soil and bedrock geology, readings from the closest cities—and the Adams County average—are the best available indicator of local conditions until Henderson homeowners submit their own results. The EPA still recommends testing every individual home, since levels can vary significantly from house to house.

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.