Charles Town, WV Radon Mitigation and Testing

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

Based on 10 user-submitted tests, the average radon level is 8.10 pCi/L.

Q: What EPA Radon Zone is Charles Town in?

Charles Town is in Jefferson County, EPA Zone 1.

Q: How much does radon mitigation cost in Charles Town?

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

Avg: 8.10 pCi/L

Jefferson County

EPA Zone 1

10 user tests

Charles Town is located in Jefferson County, West Virginia. With 10 user-submitted readings averaging 8.10 pCi/L, the area exceeds the EPA's 4.0 pCi/L action threshold, and testing is strongly recommended for homeowners in the 25414 zip code.

8.10

pCi/L average

Above EPA Action Level

Based on 10 user-submitted radon tests for homes in Charles Town, WV. The EPA recommends taking action at or above 4.0 pCi/L.

4.0 EPA

10+

Charles Town, WV Radon Mitigation

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

Charles Town, WV Radon Testing

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

Charles Town, West Virginia Radon Levels

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

Radon Level	City	Home Age	Foundation	Submitted
5 pCi/L	Charles Town, WV	—	Full Basement	Sep 2025
2 pCi/L	Charles Town, WV	0-20 Years	Full Basement	Feb 2025
14 pCi/L	Charles Town, WV	0-20 Years	Full Basement	Jun 2024
8 pCi/L	Charles Town, WV	21-50 Years	Full Basement	Mar 2021
16 pCi/L	Charles Town, WV	0-20 Years	Full Basement	May 2020

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

Charles Town Radon Facts

Key details about the radon risk profile for Charles Town and the 25414 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Jefferson County, WV

Zip Code

25414

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Avg. User Submitted Level

8.10 pCi/L

User Tests Submitted

Charles Town and the 25414 zip code are located in Jefferson 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 Charles Town, WV

What is the average radon level in Charles Town, WV?

Based on 10 user-submitted tests, the average radon level in Charles Town is 8.10 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 Charles Town in?

Charles Town and the 25414 zip code are in Jefferson 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 Charles Town?

Radon mitigation in Charles Town 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 Charles Town?

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