Clifton, CO Radon Levels

Q: What EPA Radon Zone is Clifton in?

Clifton is in Mesa County, EPA Zone 1.

Q: How much does radon mitigation cost in Clifton?

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

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

Clifton, CO Radon Facts

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

County Mesa County, CO

Zip Code 81520

Clifton in Mesa County sits within the Grand Junction Metro area where Colorado Plateau geology and uranium-bearing rock formations can contribute to elevated radon levels. While specific testing data is not available for zip code 81520, the region's documented radon concerns and mixed housing stock make individual assessment crucial. Homes throughout western Colorado's high desert region should prioritize professional radon testing, particularly properties with below-grade living spaces.

9.13

pCi/L area average

Above EPA Action Level

Mesa County average: 9.13 pCi/L, based on 8 user-submitted tests across 3 cities in the county. No homeowner readings have been submitted for Clifton 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+

Clifton, 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 Clifton, CO

No homeowner tests have been submitted for Clifton 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
Grand Junction	4.8 mi	7.86 pCi/L	7
Mack	28.4 mi	18.00 pCi/L	1
Cedaredge	30.4 mi	4.00 pCi/L	1
Delta	31.8 mi	7.00 pCi/L	3
Olathe	41.5 mi	5.00 pCi/L	2
Rifle	47.9 mi	7.00 pCi/L	1
Paonia	48.1 mi	6.00 pCi/L	1

Mesa County Radon Profile

Because of its underlying geology, Mesa County is mapped as EPA Radon Zone 1 — the most elevated classification — where predicted indoor screening averages exceed 4 pCi/L. Homeowner-submitted tests from 3 cities in Mesa County average 9.13 pCi/L across 8 tests — above the EPA's 4 pCi/L action level, reinforcing the need for testing across the county. As the second leading cause of lung cancer in the U.S., radon warrants testing in every Mesa County home regardless of zone or a neighbor's results.

Radon FAQ for Clifton, CO

What EPA Radon Zone is Clifton in?

Clifton and the 81520 zip code are in Mesa 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 Clifton?

No homeowner radon tests have been submitted for Clifton yet. Because radon is driven by regional soil and bedrock geology, readings from the closest cities—and the Mesa County average—are the best available indicator of local conditions until Clifton 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 Clifton?

Radon mitigation in Clifton 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 Clifton?

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.