Clarksburg, WV Radon Mitigation and Testing

Q: What is the average radon level in Clarksburg, WV?

Based on 1 user-submitted tests, the average radon level is 5.00 pCi/L.

Q: What EPA Radon Zone is Clarksburg in?

Clarksburg is in Harrison County, EPA Zone 2.

Q: How much does radon mitigation cost in Clarksburg?

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

Avg: 5.00 pCi/L

Harrison County

EPA Zone 2

1 user test

Home testing in Clarksburg, Harrison County, has recorded 5.0 pCi/L—slightly above the EPA's recommended action level of 4.0. The Appalachian geology underlying this West Virginia community creates conditions where radon can accumulate, particularly in the basement foundations common throughout zip code 26301, making testing and potential mitigation important for local residents.

5.00

pCi/L average

Above EPA Action Level

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

4.0 EPA

10+

Clarksburg, WV Radon Mitigation

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

Clarksburg, WV Radon Testing

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

Clarksburg, West Virginia Radon Levels

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

Radon Level	City	Home Age	Foundation	Submitted
5 pCi/L	Clarksburg, WV	21-50 Years	Full Basement	Apr 2025

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

Clarksburg Radon Facts

Key details about the radon risk profile for Clarksburg and the 26301 zip code area.

EPA Radon Zone

Zone 2 — Moderate Risk

County

Harrison County, WV

Zip Code

26301

Predicted Screening Level

2–4 pCi/L (Zone 2)

Avg. User Submitted Level

5.00 pCi/L

User Tests Submitted

Clarksburg and the 26301 zip code are located in Harrison County, which has an EPA assigned Radon Zone of 2. A radon zone of 2 predicts an average indoor radon screening level between 2 and 4 pCi/L. The EPA recommends testing every home regardless of zone classification.

Radon FAQ for Clarksburg, WV

What is the average radon level in Clarksburg, WV?

Based on 1 user-submitted test, the average radon level in Clarksburg is 5.00 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 Clarksburg in?

Clarksburg and the 26301 zip code are in Harrison County, which has an EPA assigned Radon Zone of 2. A zone of 2 predicts an average indoor radon screening level between 2 and 4 pCi/L.

How much does radon mitigation cost in Clarksburg?

Radon mitigation in Clarksburg 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 Clarksburg?

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