Boulder, WY Radon Mitigation and Testing

Q: What EPA Radon Zone is Boulder in?

Boulder is in Sublette County, EPA Zone 1.

Q: How much does radon mitigation cost in Boulder?

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

Sublette County

EPA Zone 1

Nestled in Sublette County along Wyoming's western slope, Boulder sits in mountainous terrain where uranium-bearing formations and glacial deposits contribute to elevated radon risk. While specific testing data for ZIP code 82923 is currently unavailable, the area's EPA Zone 1 designation indicates high radon potential. Homeowners in this rural community should conduct professional radon testing, particularly in homes with basements or crawl spaces where radon can accumulate.

Boulder, WY Radon Mitigation

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

Boulder, WY Radon Testing

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

Boulder Radon Facts

Key details about the radon risk profile for Boulder and the 82923 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Sublette County, WY

Zip Code

82923

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Boulder and the 82923 zip code are located in Sublette 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 Boulder, WY

What EPA Radon Zone is Boulder in?

Boulder and the 82923 zip code are in Sublette 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 Boulder?

Radon mitigation in Boulder 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 Boulder?

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 Wyoming

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

City	Avg User Radon Level	Submissions
Lander	8.18 pCi/L	11
Rock Springs	5.22 pCi/L	9
Laramie	5.83 pCi/L	6
Green River	12.60 pCi/L	5
Riverton	8.40 pCi/L	5
Casper	5.60 pCi/L	5
Sheridan	10.75 pCi/L	4
Thayne	9.25 pCi/L	4
Cody	5.75 pCi/L	4
Cheyenne	5.00 pCi/L	4
Thermopolis	5.00 pCi/L	3
Gillette	20.00 pCi/L	1
Jackson	No submissions	0