Princeton, WV Radon Mitigation and Testing

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

Based on 1 user-submitted tests, the average radon level is 6.00 pCi/L.

Q: What EPA Radon Zone is Princeton in?

Princeton is in Mercer County, EPA Zone 1.

Q: How much does radon mitigation cost in Princeton?

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

Avg: 6.00 pCi/L

Mercer County

EPA Zone 1

1 user test

Situated in Mercer County in southern West Virginia, Princeton's location in Appalachian terrain creates geological conditions that can influence radon levels. Testing data for zip codes 24739 and 24740 is currently limited, though the region's sedimentary rock formations can contribute to radon production. Homeowners should prioritize testing to determine their individual exposure levels.

6.00

pCi/L average

Above EPA Action Level

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

4.0 EPA

10+

Princeton, WV Radon Mitigation

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

Princeton, WV Radon Testing

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

Princeton, West Virginia Radon Levels

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

Radon Level	City	Home Age	Foundation	Submitted
6 pCi/L	Princeton, WV	51-99 Years	Full Basement	Jun 2026

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

Princeton Radon Facts

Key details about the radon risk profile for Princeton and the 24739 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Mercer County, WV

Zip Code

24739

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Avg. User Submitted Level

6.00 pCi/L

User Tests Submitted

Princeton and the 24739 zip code are located in Mercer 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 Princeton, WV

What is the average radon level in Princeton, WV?

Based on 1 user-submitted test, the average radon level in Princeton is 6.00 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 Princeton in?

Princeton and the 24739 zip code are in Mercer 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 Princeton?

Radon mitigation in Princeton 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 Princeton?

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