Marlboro, NJ Radon Mitigation and Testing

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

Based on 6 user-submitted tests, the average radon level is 6.20 pCi/L.

Q: What EPA Radon Zone is Marlboro in?

Marlboro is in Monmouth County, EPA Zone 1.

Q: How much does radon mitigation cost in Marlboro?

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

Avg: 6.20 pCi/L

Monmouth County

EPA Zone 1

6 user tests

Marlboro is located in Monmouth County, New Jersey. With 6 user-submitted readings averaging 6.20 pCi/L, the area exceeds the EPA's 4.0 pCi/L action threshold, and testing is strongly recommended for homeowners in the 07746 zip code.

6.20

pCi/L average

Above EPA Action Level

Based on 6 user-submitted radon tests for homes in Marlboro, NJ. The EPA recommends taking action at or above 4.0 pCi/L.

4.0 EPA

10+

Marlboro, NJ Radon Mitigation

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

Marlboro, NJ Radon Testing

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

Marlboro, New Jersey Radon Levels

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

Radon Level	City	Home Age	Foundation	Submitted
2 pCi/L	Marlboro, NJ	21-50 Years	Partial Basement	May 2025
4 pCi/L	Marlboro, NJ	21-50 Years	Full Basement	Apr 2021
6 pCi/L	Marlboro, NJ	0-20 Years	Full Basement	Apr 2019
10 pCi/L	Marlboro, NJ	21-50 Years	Partial Basement	Oct 2018
11 pCi/L	Marlboro, NJ	21-50 Years	Full Basement	Apr 2016

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

Marlboro Radon Facts

Key details about the radon risk profile for Marlboro and the 07746 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Monmouth County, NJ

Zip Code

07746

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Avg. User Submitted Level

6.20 pCi/L

User Tests Submitted

Marlboro and the 07746 zip code are located in Monmouth 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 Marlboro, NJ

What is the average radon level in Marlboro, NJ?

Based on 6 user-submitted tests, the average radon level in Marlboro is 6.20 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 Marlboro in?

Marlboro and the 07746 zip code are in Monmouth 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 Marlboro?

Radon mitigation in Marlboro 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 Marlboro?

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