Washington, OK Radon Mitigation and Testing

Q: What EPA Radon Zone is Washington in?

Washington is in McClain County, EPA Zone 3.

Q: How much does radon mitigation cost in Washington?

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

McClain County

EPA Zone 3

Situated in McClain County within the Oklahoma City Metro area, Washington rests on sedimentary rock formations typical of central Oklahoma. Available radon testing data for zip code 73093 is limited, though Oklahoma's geology can produce variable radon concentrations. The community features predominantly newer suburban homes built on slab foundations, though some properties with basements or crawl spaces may still require radon assessment.

Washington, OK Radon Mitigation

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

Washington, OK Radon Testing

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

Washington Radon Facts

Key details about the radon risk profile for Washington and the 73093 zip code area.

EPA Radon Zone

Zone 3 — Low Risk

County

McClain County, OK

Zip Code

73093

Predicted Screening Level

< 2.0 pCi/L (Zone 3)

Washington and the 73093 zip code are located in McClain 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 Washington, OK

What EPA Radon Zone is Washington in?

Washington and the 73093 zip code are in McClain 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 Washington?

Radon mitigation in Washington 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 Washington?

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