Williamson, WV Radon Mitigation and Testing

Q: What EPA Radon Zone is Williamson in?

Williamson is in Mingo County, EPA Zone 3.

Q: How much does radon mitigation cost in Williamson?

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

Mingo County

EPA Zone 3

Tucked into Mingo County in southern West Virginia, Williamson sits amid Appalachian coal-bearing formations that can influence radon production. Current testing data for the 25661 area is insufficient, highlighting the importance of individual home testing. The region's complex geology, combining sedimentary layers with mining activities, creates unpredictable radon conditions requiring professional assessment.

Williamson, WV Radon Mitigation

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

Williamson, WV Radon Testing

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

Williamson Radon Facts

Key details about the radon risk profile for Williamson and the 25661 zip code area.

EPA Radon Zone

Zone 3 — Low Risk

County

Mingo County, WV

Zip Code

25661

Predicted Screening Level

< 2.0 pCi/L (Zone 3)

Williamson and the 25661 zip code are located in Mingo 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 Williamson, WV

What EPA Radon Zone is Williamson in?

Williamson and the 25661 zip code are in Mingo 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 Williamson?

Radon mitigation in Williamson 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 Williamson?

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 West Virginia

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

City	Avg User Radon Level	Submissions
Charles Town	8.10 pCi/L	10
Berkeley Springs	7.70 pCi/L	10
Martinsburg	16.00 pCi/L	8
Harpers Ferry	6.57 pCi/L	7
Ridgeley	9.00 pCi/L	5
Shepherdstown	6.25 pCi/L	4
Kearneysville	5.50 pCi/L	2
Ranson	14.00 pCi/L	1
Morgantown	5.00 pCi/L	1
Charleston	3.00 pCi/L	1