Westfield, NJ Radon Mitigation and Testing

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

Based on 3 user-submitted tests, the average radon level is 6.00 pCi/L.

Q: What EPA Radon Zone is Westfield in?

Westfield is in Union County, EPA Zone 2.

Q: How much does radon mitigation cost in Westfield?

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

Union County

EPA Zone 2

3 user tests

Westfield is located in Union County, New Jersey. With 3 user-submitted readings averaging 6.00 pCi/L, the area exceeds the EPA's 4.0 pCi/L action threshold, and testing is strongly recommended for homeowners in the 07090 zip code.

6.00

pCi/L average

Above EPA Action Level

Based on 3 user-submitted radon tests for homes in Westfield, NJ. The EPA recommends taking action at or above 4.0 pCi/L.

4.0 EPA

10+

Westfield, NJ Radon Mitigation

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

Westfield, NJ Radon Testing

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

Westfield, New Jersey Radon Levels

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

Radon Level	City	Home Age	Foundation	Submitted
3 pCi/L	Westfield, NJ	51-99 Years	Full Basement	Feb 2025
9 pCi/L	Westfield, NJ	51-99 Years	Full Basement	Oct 2019
6 pCi/L	Westfield, NJ	0-20 Years	Full Basement	Oct 2018

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

Westfield Radon Facts

Key details about the radon risk profile for Westfield and the 07090 zip code area.

EPA Radon Zone

Zone 2 — Moderate Risk

County

Union County, NJ

Zip Code

07090

Predicted Screening Level

2–4 pCi/L (Zone 2)

Avg. User Submitted Level

6.00 pCi/L

User Tests Submitted

Westfield and the 07090 zip code are located in Union 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 Westfield, NJ

What is the average radon level in Westfield, NJ?

Based on 3 user-submitted tests, the average radon level in Westfield 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 Westfield in?

Westfield and the 07090 zip code are in Union 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 Westfield?

Radon mitigation in Westfield 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 Westfield?

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