New Castle, DE Radon Mitigation and Testing

Q: What is the average radon level in New Castle, DE?

Based on 1 user-submitted tests, the average radon level is 4.00 pCi/L.

Q: What EPA Radon Zone is New Castle in?

New Castle is in New Castle County, EPA Zone 2.

Q: How much does radon mitigation cost in New Castle?

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

Avg: 4.00 pCi/L

New Castle County

EPA Zone 2

1 user test

New Castle is located in New Castle County, Delaware. With 1 user-submitted readings averaging 4.00 pCi/L, the area exceeds the EPA's 4.0 pCi/L action threshold, and testing is strongly recommended for homeowners in the 19720 zip code.

4.00

pCi/L average

Above EPA Action Level

Based on 1 user-submitted radon test for homes in New Castle, DE. The EPA recommends taking action at or above 4.0 pCi/L.

4.0 EPA

10+

New Castle, DE Radon Mitigation

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

New Castle, DE Radon Testing

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

New Castle, Delaware Radon Levels

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

Radon Level	City	Home Age	Foundation	Submitted
4 pCi/L	New Castle, DE	0-20 Years	Full Basement	Sep 2018

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

New Castle Radon Facts

Key details about the radon risk profile for New Castle and the 19720 zip code area.

EPA Radon Zone

Zone 2 — Moderate Risk

County

New Castle County, DE

Zip Code

19720

Predicted Screening Level

2–4 pCi/L (Zone 2)

Avg. User Submitted Level

4.00 pCi/L

User Tests Submitted

New Castle and the 19720 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 New Castle, DE

What is the average radon level in New Castle, DE?

Based on 1 user-submitted test, the average radon level in New Castle is 4.00 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 New Castle in?

New Castle and the 19720 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 New Castle?

Radon mitigation in New Castle 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 New Castle?

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