Chappell Hill, TX Radon Levels

Q: What EPA Radon Zone is Chappell Hill in?

Chappell Hill is in Washington County, EPA Zone 3.

Q: How much does radon mitigation cost in Chappell Hill?

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

Check local Chappell Hill radon levels and find certified testing and mitigation professionals to keep your home safe

Chappell Hill, TX Radon Facts

EPA Radon Zone Zone 3 — Low Risk < 2.0 pCi/L (Zone 3)

County Washington County, TX

Zip Code 77426

Chappell Hill in Washington County sits within the Houston Metro area on Gulf Coastal Plain sediments that typically yield low radon readings. The historic 77426 community currently lacks comprehensive testing data, encouraging residents to test their properties. This area's rural character and mix of historic and modern homes may show varying radon accumulation patterns depending on construction details.

Chappell Hill, TX Radon Mitigation

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

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Radon FAQ for Chappell Hill, TX

What EPA Radon Zone is Chappell Hill in?

Chappell Hill and the 77426 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 Chappell Hill?

Radon mitigation in Chappell Hill 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 Chappell Hill?

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 in Texas with the most user-submitted radon test data, ranked by number of submissions.

City	Avg User Radon Level	Submissions
Lubbock	12.70 pCi/L	10
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