Houston, TX Radon Mitigation and Testing

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

Based on 2 user-submitted tests, the average radon level is 3.50 pCi/L.

Q: What EPA Radon Zone is Houston in?

Houston is in Harris County, EPA Zone 3.

Q: How much does radon mitigation cost in Houston?

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

Avg: 3.50 pCi/L

Harris County

EPA Zone 3

2 user tests

Houston is located in Harris County, Texas. With 2 user-submitted readings averaging 3.50 pCi/L, levels are currently below the EPA's recommended action level of 4.0 pCi/L. However, we recommend all homes be tested regardless of your neighbor's results.

3.50

pCi/L average

Below EPA Action Level

Based on 2 user-submitted radon tests for homes in Houston, TX. The EPA recommends taking action at or above 4.0 pCi/L.

4.0 EPA

10+

Houston, TX Radon Mitigation

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

Houston, TX Radon Testing

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

Houston, Texas Radon Levels

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

Radon Level	City	Home Age	Foundation	Submitted
6 pCi/L	Houston, TX	21-50 Years	No Basement/All Slab	Jun 2020
1 pCi/L	Houston, TX	0-20 Years	No Basement/All Slab	Jan 2020

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

Houston Radon Facts

Key details about the radon risk profile for Houston and the 77002 zip code area.

EPA Radon Zone

Zone 3 — Low Risk

County

Harris County, TX

Zip Code

77002

Predicted Screening Level

< 2.0 pCi/L (Zone 3)

Avg. User Submitted Level

3.50 pCi/L

User Tests Submitted

Houston and the 77002 zip code are located in Harris 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 Houston, TX

What is the average radon level in Houston, TX?

Based on 2 user-submitted tests, the average radon level in Houston is 3.50 pCi/L. This is below the EPA's recommended action level of 4.0 pCi/L. However, we recommend all homes be tested regardless of your neighbor's results.

What EPA Radon Zone is Houston in?

Houston and the 77002 zip code are in Harris 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 Houston?

Radon mitigation in Houston 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 Houston?

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