Millville, DE Radon Mitigation and Testing

Q: What EPA Radon Zone is Millville in?

Millville is in Sussex County, EPA Zone 3.

Q: How much does radon mitigation cost in Millville?

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

Sussex County

EPA Zone 3

Found in Sussex County along Delaware's coastal plain, Millville's sandy soils and relatively low elevation typically result in lower radon potential. However, testing data for the 19967 area remains limited, and individual properties can still experience elevated readings. Homeowners should conduct professional radon testing to ensure their specific property meets EPA safety guidelines.

Millville, DE Radon Mitigation

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

Millville, DE Radon Testing

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

Millville Radon Facts

Key details about the radon risk profile for Millville and the 19967 zip code area.

EPA Radon Zone

Zone 3 — Low Risk

County

Sussex County, DE

Zip Code

19967

Predicted Screening Level

< 2.0 pCi/L (Zone 3)

Millville and the 19967 zip code are located in Sussex County, which has an EPA assigned Radon Zone of 3. A radon zone of 3 predicts an average indoor radon screening level less than 2 pCi/L. The EPA recommends testing every home regardless of zone classification.

Radon FAQ for Millville, DE

What EPA Radon Zone is Millville in?

Millville and the 19967 zip code are in Sussex County, which has an EPA assigned Radon Zone of 3. A zone of 3 predicts an average indoor radon screening level less than 2 pCi/L.

How much does radon mitigation cost in Millville?

Radon mitigation in Millville 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 Millville?

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