Port Arthur, TX Radon Mitigation and Testing

Q: What EPA Radon Zone is Port Arthur in?

Port Arthur is in Jefferson County, EPA Zone 3.

Q: How much does radon mitigation cost in Port Arthur?

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

Jefferson County

EPA Zone 3

Port Arthur, TX resides in Jefferson 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. Testing is recommended for all homes in the 77640 zip code area.

Port Arthur, TX Radon Mitigation

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

Port Arthur, TX Radon Testing

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

Port Arthur Radon Facts

Key details about the radon risk profile for Port Arthur and the 77640 zip code area.

EPA Radon Zone

Zone 3 — Low Risk

County

Jefferson County, TX

Zip Code

77640

Predicted Screening Level

< 2.0 pCi/L (Zone 3)

Port Arthur and the 77640 zip code are located in Jefferson 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 Port Arthur, TX

What EPA Radon Zone is Port Arthur in?

Port Arthur and the 77640 zip code are in Jefferson 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 Port Arthur?

Radon mitigation in Port Arthur 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 Port Arthur?

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 Texas

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

City	Avg User Radon Level	Submissions
Lubbock	12.67 pCi/L	9
San Antonio	6.57 pCi/L	7
Austin	6.14 pCi/L	7
Dallas	8.00 pCi/L	5
Abilene	4.50 pCi/L	2
Houston	3.50 pCi/L	2
Plano	6.00 pCi/L	1
Frisco	3.00 pCi/L	1
Nacogdoches	No submissions	0