Stillwater, OK Radon Mitigation and Testing

Q: What is the average radon level in Stillwater, OK?

Based on 1 user-submitted tests, the average radon level is 4.00 pCi/L.

Q: What EPA Radon Zone is Stillwater in?

Stillwater is in Payne County, EPA Zone 3.

Q: How much does radon mitigation cost in Stillwater?

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

Avg: 4.00 pCi/L

Payne County

EPA Zone 3

1 user test

Home to Oklahoma State University in Payne County, Stillwater recorded radon levels averaging 4.0 pCi/L, right at the EPA action threshold. The city's red clay soils over Permian bedrock create moderate radon conditions that vary by neighborhood. Both zip codes 74074 and 74075 encompass diverse housing from older homes near campus to newer suburban developments, all of which benefit from radon testing.

4.00

pCi/L average

Above EPA Action Level

Based on 1 user-submitted radon test for homes in Stillwater, OK. The EPA recommends taking action at or above 4.0 pCi/L.

4.0 EPA

10+

Stillwater, OK Radon Mitigation

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

Stillwater, OK Radon Testing

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

Stillwater, Oklahoma Radon Levels

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

Radon Level	City	Home Age	Foundation	Submitted
4 pCi/L	Stillwater, OK	51-99 Years	Partial Basement	Feb 2020

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

Stillwater Radon Facts

Key details about the radon risk profile for Stillwater and the 74074 zip code area.

EPA Radon Zone

Zone 3 — Low Risk

County

Payne County, OK

Zip Code

74074

Predicted Screening Level

< 2.0 pCi/L (Zone 3)

Avg. User Submitted Level

4.00 pCi/L

User Tests Submitted

Stillwater and the 74074 zip code are located in Payne County, which has an EPA assigned Radon Zone of 3. A radon zone of 3 predicts an average indoor radon screening level less than 2 pCi/L. The EPA recommends testing every home regardless of zone classification.

Radon FAQ for Stillwater, OK

What is the average radon level in Stillwater, OK?

Based on 1 user-submitted test, the average radon level in Stillwater is 4.00 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 Stillwater in?

Stillwater and the 74074 zip code are in Payne County, which has an EPA assigned Radon Zone of 3. A zone of 3 predicts an average indoor radon screening level less than 2 pCi/L.

How much does radon mitigation cost in Stillwater?

Radon mitigation in Stillwater 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 Stillwater?

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 Oklahoma

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

City	Avg User Radon Level	Submissions
Tulsa	8.14 pCi/L	7
Oklahoma City	7.00 pCi/L	1
Edmond	5.00 pCi/L	1