La Salle, CO Radon Levels

Q: What EPA Radon Zone is La Salle in?

La Salle is in Weld County, EPA Zone 1.

Q: How much does radon mitigation cost in La Salle?

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

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

La Salle, CO Radon Facts

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

County Weld County, CO

Zip Code 80645

This Weld County community in the Greeley Metro benefits from Colorado's high-altitude environment, though the underlying geology can still produce elevated radon readings. With limited testing data available for zip code 80645, homeowners should conduct professional radon measurements to establish baseline levels. The region's EPA Zone 1 classification indicates higher radon potential, making testing particularly important for families considering long-term residence.

8.05

pCi/L area average

Above EPA Action Level

Weld County average: 8.05 pCi/L, based on 20 user-submitted tests across 7 cities in the county. No homeowner readings have been submitted for La Salle 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+

La Salle, 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 La Salle, CO

No homeowner tests have been submitted for La Salle 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
Evans	4.4 mi	6.33 pCi/L	3
Greeley	5.3 mi	4.67 pCi/L	3
Johnstown	10.4 mi	9.50 pCi/L	4
Eaton	14.3 mi	7.00 pCi/L	1
Windsor	14.4 mi	7.00 pCi/L	5
Berthoud	20.0 mi	12.00 pCi/L	2
Loveland	20.0 mi	4.50 pCi/L	2
Longmont	21.5 mi	8.00 pCi/L	4

Weld County Radon Profile

Weld 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 7 cities in Weld County average 8.05 pCi/L across 20 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 Weld County to test, as levels can differ between neighboring homes.

Radon FAQ for La Salle, CO

What EPA Radon Zone is La Salle in?

La Salle and the 80645 zip code are in Weld 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 La Salle?

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

Radon mitigation in La Salle 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 La Salle?

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.