Milliken, CO Radon Levels

Q: What EPA Radon Zone is Milliken in?

Milliken is in Weld County, EPA Zone 1.

Q: How much does radon mitigation cost in Milliken?

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

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

Milliken, CO Radon Facts

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

County Weld County, CO

Zip Code 80543

Located in northern Colorado's Weld County within the Greeley Metro area, Milliken sits on the High Plains where Pierre Shale formations underlie the surface soils. The growing community features newer suburban development mixed with agricultural properties, reflecting the area's transition from farming to residential growth. Testing data for zip code 80543 is currently limited, making individual radon testing important for homeowners in this EPA Zone 1 community.

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 Milliken 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+

Milliken, 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 Milliken, CO

No homeowner tests have been submitted for Milliken 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
Johnstown	3.6 mi	9.50 pCi/L	4
Greeley	8.7 mi	4.67 pCi/L	3
Evans	9.0 mi	6.33 pCi/L	3
Windsor	10.9 mi	7.00 pCi/L	5
Berthoud	13.3 mi	12.00 pCi/L	2
Loveland	13.5 mi	4.50 pCi/L	2
Eaton	15.5 mi	7.00 pCi/L	1
Longmont	16.6 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 Milliken, CO

What EPA Radon Zone is Milliken in?

Milliken and the 80543 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 Milliken?

No homeowner radon tests have been submitted for Milliken 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 Milliken 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 Milliken?

Radon mitigation in Milliken 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 Milliken?

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.