Madison, NJ Radon Mitigation and Testing

Q: What EPA Radon Zone is Madison in?

Madison is in Morris County, EPA Zone 1.

Q: How much does radon mitigation cost in Madison?

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

Morris County

EPA Zone 1

Located in Morris County within the New York City Metro area, Madison sits on the Piedmont plateau where ancient bedrock formations contribute to some of New Jersey's highest radon levels. Although testing data for zip code 07940 remains limited, the geological setting strongly suggests homeowners should prioritize radon testing. The borough's mix of historic homes and modern residences, many with full basements, creates ideal conditions for radon accumulation that require professional monitoring.

Madison, NJ Radon Mitigation

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

Madison, NJ Radon Testing

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

Madison Radon Facts

Key details about the radon risk profile for Madison and the 07940 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Morris County, NJ

Zip Code

07940

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Madison and the 07940 zip code are located in Morris 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 Madison, NJ

What EPA Radon Zone is Madison in?

Madison and the 07940 zip code are in Morris 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 Madison?

Radon mitigation in Madison 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 Madison?

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