Washington, TX Radon Mitigation and Testing

Q: What EPA Radon Zone is Washington in?

Washington is in Washington County, EPA Zone 3.

Q: How much does radon mitigation cost in Washington?

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

Washington County

EPA Zone 3

Located in Washington County in the heart of Texas, this historic community sits on Gulf Coastal Plain sediments that typically produce lower radon levels. While radon testing data for zip code 77880 remains limited, homeowners should still conduct baseline testing to establish their property's radon profile. The area's predominant single-family housing stock with slab-on-grade foundations generally shows reduced radon accumulation potential.

Washington, TX Radon Mitigation

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

Washington, TX Radon Testing

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

Washington Radon Facts

Key details about the radon risk profile for Washington and the 77880 zip code area.

EPA Radon Zone

Zone 3 — Low Risk

County

Washington County, TX

Zip Code

77880

Predicted Screening Level

< 2.0 pCi/L (Zone 3)

Washington and the 77880 zip code are located in Washington 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 Washington, TX

What EPA Radon Zone is Washington in?

Washington and the 77880 zip code are in Washington 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 Washington?

Radon mitigation in Washington 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 Washington?

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