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Williamstown, NJ Radon Levels

Check local Williamstown radon levels and find certified testing and mitigation professionals to keep your home safe


Williamstown, NJ Radon Facts

EPA Radon Zone Zone 2 — Moderate Risk 2–4 pCi/L (Zone 2)
County Gloucester County, NJ
Zip Code 08094
Avg. User Level 5.00 pCi/L
User Tests 2

Williamstown in Gloucester County shows moderate radon levels averaging 5.0 pCi/L, slightly above the EPA's 4.0 pCi/L action threshold. The Atlantic City Metro area's Coastal Plain geology, with sandy soils over deeper sedimentary layers, contributes to these elevated readings. Homes throughout the 08094 zip code should consider testing and potential mitigation, especially those with basements or crawl spaces.

5.00
pCi/L average
Above EPA Action Level

Based on 2 user-submitted radon tests for homes in Williamstown, NJ. The EPA recommends taking action at or above 4.0 pCi/L.

0
4.0 EPA
10+

Williamstown, NJ Radon Mitigation

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

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Williamstown, NJ Radon Levels

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

Radon LevelCityHome AgeFoundation
4 pCi/L Williamstown, NJ Full Basement
6 pCi/L Williamstown, NJ 0-20 Years Full Basement

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

Radon FAQ for Williamstown, NJ

What is the average radon level in Williamstown, NJ?
Based on 2 user-submitted tests, the average radon level in Williamstown 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 Williamstown in?
Williamstown and the 08094 zip code are in Gloucester 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 Williamstown?
Radon mitigation in Williamstown 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 Williamstown?
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 New Jersey

Cities in New Jersey with the most user-submitted radon test data, ranked by number of submissions.

CityAvg User Radon LevelSubmissions
Cherry Hill 6.44 pCi/L 9
Hillsborough 6.14 pCi/L 7
Freehold 10.50 pCi/L 6
Marlboro 6.17 pCi/L 6
Bernardsville 7.00 pCi/L 5
Phillipsburg 7.00 pCi/L 5
Edison 5.60 pCi/L 5
Princeton 5.40 pCi/L 5
Sussex 9.75 pCi/L 4
Piscataway 6.75 pCi/L 4