Stewartsville, NJ Radon Mitigation and Testing

Q: What is the average radon level in Stewartsville, NJ?

Based on 2 user-submitted tests, the average radon level is 10.50 pCi/L.

Q: What EPA Radon Zone is Stewartsville in?

Stewartsville is in Warren County, EPA Zone 1.

Q: How much does radon mitigation cost in Stewartsville?

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

Avg: 10.50 pCi/L

Warren County

EPA Zone 1

2 user tests

Stewartsville is located in Warren County, New Jersey. With 2 user-submitted readings averaging 10.50 pCi/L, the area exceeds the EPA's 4.0 pCi/L action threshold, and testing is strongly recommended for homeowners in the 08886 zip code.

10.50

pCi/L average

Above EPA Action Level

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

4.0 EPA

10+

Stewartsville, NJ Radon Mitigation

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

Stewartsville, NJ Radon Testing

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

Stewartsville, New Jersey Radon Levels

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

Radon Level	City	Home Age	Foundation	Submitted
4 pCi/L	Stewartsville, NJ	100+ Years	Full Basement	Dec 2022
17 pCi/L	Stewartsville, NJ	100+ Years	Full Basement	Nov 2018

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

Stewartsville Radon Facts

Key details about the radon risk profile for Stewartsville and the 08886 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Warren County, NJ

Zip Code

08886

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Avg. User Submitted Level

10.50 pCi/L

User Tests Submitted

Stewartsville and the 08886 zip code are located in Warren 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 Stewartsville, NJ

What is the average radon level in Stewartsville, NJ?

Based on 2 user-submitted tests, the average radon level in Stewartsville is 10.50 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 Stewartsville in?

Stewartsville and the 08886 zip code are in Warren 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 Stewartsville?

Radon mitigation in Stewartsville 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 Stewartsville?

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

City	Avg User Radon Level	Submissions
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
Caldwell	5.00 pCi/L	4
Atlantic Highlands	4.75 pCi/L	4
West Orange	4.00 pCi/L	4
Basking Ridge	3.75 pCi/L	4
Hackettstown	3.75 pCi/L	4
Livingston	3.25 pCi/L	4
Nutley	3.25 pCi/L	4
Sicklerville	7.00 pCi/L	3
Clifton	6.00 pCi/L	3
Westfield	6.00 pCi/L	3