Newark, DE Radon Mitigation and Testing

Q: What EPA Radon Zone is Newark in?

Newark is in New Castle County, EPA Zone 2.

Q: How much does radon mitigation cost in Newark?

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

New Castle County

EPA Zone 2

Positioned in New Castle County within the Philadelphia metro region, Newark spans multiple zip codes with limited radon testing data currently available. The area's Piedmont geology, featuring crystalline bedrock beneath coastal plain sediments, can create variable radon conditions across different neighborhoods. University of Delaware researchers and local residents alike should prioritize radon testing given the geological complexity of this region.

Newark, DE Radon Mitigation

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

Newark, DE Radon Testing

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

Newark Radon Facts

Key details about the radon risk profile for Newark and the 19702 zip code area.

EPA Radon Zone

Zone 2 — Moderate Risk

County

New Castle County, DE

Zip Code

19702

Predicted Screening Level

2–4 pCi/L (Zone 2)

Newark and the 19702 zip code are located in New Castle 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 Newark, DE

What EPA Radon Zone is Newark in?

Newark and the 19702 zip code are in New Castle 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 Newark?

Radon mitigation in Newark 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 Newark?

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 Delaware

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

City	Avg User Radon Level	Submissions
Middletown	7.43 pCi/L	7
Wilmington	5.50 pCi/L	4
Lewes	6.00 pCi/L	1
New Castle	4.00 pCi/L	1
Newark	No submissions	0