Casper, WY Radon Mitigation and Testing

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

Based on 5 user-submitted tests, the average radon level is 5.60 pCi/L.

Q: What EPA Radon Zone is Casper in?

Casper is in Natrona County, EPA Zone 1.

Q: How much does radon mitigation cost in Casper?

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

Avg: 5.60 pCi/L

Natrona County

EPA Zone 1

5 user tests

Casper is located in Natrona County, Wyoming. With 5 user-submitted readings averaging 5.60 pCi/L, the area exceeds the EPA's 4.0 pCi/L action threshold, and testing is strongly recommended for homeowners in the 82601 zip code.

5.60

pCi/L average

Above EPA Action Level

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

4.0 EPA

10+

Casper, WY Radon Mitigation

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

Casper, WY Radon Testing

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

Casper, Wyoming Radon Levels

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

Radon Level	City	Home Age	Foundation	Submitted
6 pCi/L	Casper, WY	51-99 Years	No Basement/All Slab	Nov 2024
6 pCi/L	Casper, WY	51-99 Years	Full Basement	May 2024
4 pCi/L	Casper, WY	0-20 Years	Full Basement	Jan 2023
4 pCi/L	Casper, WY	51-99 Years	No Basement/All Crawl Space	May 2016
8 pCi/L	Casper, WY	51-99 Years	Full Basement	Mar 2016

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

Casper Radon Facts

Key details about the radon risk profile for Casper and the 82601 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Natrona County, WY

Zip Code

82601

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Avg. User Submitted Level

5.60 pCi/L

User Tests Submitted

Casper and the 82601 zip code are located in Natrona 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 Casper, WY

What is the average radon level in Casper, WY?

Based on 5 user-submitted tests, the average radon level in Casper is 5.60 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 Casper in?

Casper and the 82601 zip code are in Natrona 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 Casper?

Radon mitigation in Casper 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 Casper?

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