Riverton, WY Radon Mitigation and Testing

Q: What is the average radon level in Riverton, WY?

Based on 5 user-submitted tests, the average radon level is 8.40 pCi/L.

Q: What EPA Radon Zone is Riverton in?

Riverton is in Fremont County, EPA Zone 1.

Q: How much does radon mitigation cost in Riverton?

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

Avg: 8.40 pCi/L

Fremont County

EPA Zone 1

5 user tests

Located in Fremont County in central Wyoming's Wind River Basin, this community sits on sedimentary formations that contribute to significant radon potential. Testing data reveals an average level of 8.4 pCi/L, more than double the EPA action threshold, with individual readings ranging from 4.0 to 15.0 pCi/L. The 82501 area's mix of older ranch-style homes and newer construction requires immediate radon testing and likely mitigation for most properties.

8.40

pCi/L average

Above EPA Action Level

Based on 5 user-submitted radon tests for homes in Riverton, WY. The EPA recommends taking action at or above 4.0 pCi/L.

4.0 EPA

10+

Riverton, WY Radon Mitigation

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

Riverton, WY Radon Testing

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

Riverton, Wyoming Radon Levels

User-submitted radon test readings from homes in the Riverton area.

Radon Level	City	Home Age	Foundation	Submitted
4 pCi/L	Riverton, WY	51-99 Years	Full Basement	Nov 2025
6 pCi/L	Riverton, WY	21-50 Years	Full Basement	Aug 2023
11 pCi/L	Riverton, WY	21-50 Years	No Basement/All Crawl Space	Aug 2020
15 pCi/L	Riverton, WY	21-50 Years	Partial Basement	Dec 2016

Have a radon test result for Riverton? Submit your reading to help other homeowners.

Riverton Radon Facts

Key details about the radon risk profile for Riverton and the 82501 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Fremont County, WY

Zip Code

82501

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Avg. User Submitted Level

8.40 pCi/L

User Tests Submitted

Riverton and the 82501 zip code are located in Fremont 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 Riverton, WY

What is the average radon level in Riverton, WY?

Based on 5 user-submitted tests, the average radon level in Riverton is 8.40 pCi/L. This exceeds the EPA's recommended action level of 4.0 pCi/L, and radon testing is recommended for all homes in the area.

What EPA Radon Zone is Riverton in?

Riverton and the 82501 zip code are in Fremont 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 Riverton?

Radon mitigation in Riverton 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 Riverton?

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