Austin, TX Radon Mitigation and Testing

Q: What is the average radon level in Austin, TX?

Based on 6 user-submitted tests, the average radon level is 5.20 pCi/L.

Q: What EPA Radon Zone is Austin in?

Austin is in Travis County, EPA Zone 3.

Q: How much does radon mitigation cost in Austin?

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

Avg: 5.20 pCi/L

Travis County

EPA Zone 3

6 user tests

Spanning Travis County and Hays County in central Texas, Austin shows an average radon level of 6.14 pCi/L, which exceeds the EPA action threshold of 4.0 pCi/L. Based on 7 test results across multiple zip codes in the Austin Metro area, readings have ranged from 2.0 to 12.0 pCi/L, demonstrating significant variation. The region's limestone bedrock and diverse housing stock, from downtown high-rises to suburban ranch homes, create conditions where professional radon testing and mitigation may be necessary.

5.20

pCi/L average

Above EPA Action Level

Based on 6 user-submitted radon tests for homes in Austin, TX. The EPA recommends taking action at or above 4.0 pCi/L.

4.0 EPA

10+

Austin, TX Radon Mitigation

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

Austin, TX Radon Testing

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

Austin, Texas Radon Levels

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

Radon Level	City	Home Age	Foundation	Submitted
5 pCi/L	Austin, TX	21-50 Years	No Basement/All Slab	Nov 2021
9 pCi/L	Austin, TX	21-50 Years	No Basement/All Slab	Nov 2021
2 pCi/L	Austin, TX	21-50 Years	No Basement/All Slab	Aug 2021
6 pCi/L	Austin, TX	21-50 Years	No Basement/All Slab	Mar 2019
5 pCi/L	Austin, TX	51-99 Years	—	Jan 2018

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

Austin Radon Facts

Key details about the radon risk profile for Austin and the 78701 zip code area.

EPA Radon Zone

Zone 3 — Low Risk

County

Travis County, TX

Zip Code

78701

Predicted Screening Level

< 2.0 pCi/L (Zone 3)

Avg. User Submitted Level

5.20 pCi/L

User Tests Submitted

Austin and the 78701 zip code are located in Travis 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 Austin, TX

What is the average radon level in Austin, TX?

Based on 6 user-submitted tests, the average radon level in Austin is 5.20 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 Austin in?

Austin and the 78701 zip code are in Travis 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 Austin?

Radon mitigation in Austin 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 Austin?

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