Huntsville, AL Radon Mitigation and Testing

Q: What is the average radon level in Huntsville, AL?

Based on 2 user-submitted tests, the average radon level is 9.00 pCi/L.

Q: What EPA Radon Zone is Huntsville in?

Huntsville is in Madison County, EPA Zone 1.

Q: How much does radon mitigation cost in Huntsville?

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

Avg: 9.00 pCi/L

Madison County

EPA Zone 1

2 user tests

Huntsville in Madison County shows concerning radon levels with an average reading of 9.0 pCi/L, well above the EPA's 4.0 pCi/L action threshold. The Tennessee Valley's limestone bedrock and karst geology contribute to significant radon accumulation in area homes. Testing across multiple zip codes reveals readings ranging from 7.0 to 11.0 pCi/L, indicating that professional radon mitigation is likely needed for most properties.

9.00

pCi/L average

Above EPA Action Level

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

4.0 EPA

10+

Huntsville, AL Radon Mitigation

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

Huntsville, AL Radon Testing

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

Huntsville, Alabama Radon Levels

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

Radon Level	City	Home Age	Foundation	Submitted
11 pCi/L	Huntsville, AL	0-20 Years	No Basement/All Slab	Nov 2025
7 pCi/L	Huntsville, AL	0-20 Years	No Basement/All Slab	Jan 2021

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

Huntsville Radon Facts

Key details about the radon risk profile for Huntsville and the 35801 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Madison County, AL

Zip Code

35801

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Avg. User Submitted Level

9.00 pCi/L

User Tests Submitted

Huntsville and the 35801 zip code are located in Madison County, which has an EPA assigned Radon Zone of 1. A radon zone of 1 predicts an average indoor radon screening level greater than 4 pCi/L. The EPA recommends testing every home regardless of zone classification.

Radon FAQ for Huntsville, AL

What is the average radon level in Huntsville, AL?

Based on 2 user-submitted tests, the average radon level in Huntsville is 9.00 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 Huntsville in?

Huntsville and the 35801 zip code are in Madison County, which has an EPA assigned Radon Zone of 1. A zone of 1 predicts an average indoor radon screening level greater than 4 pCi/L.

How much does radon mitigation cost in Huntsville?

Radon mitigation in Huntsville 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 Huntsville?

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 Alabama

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

City	Avg User Radon Level	Submissions
Huntsville	9.00 pCi/L	2
Birmingham	7.00 pCi/L	2
Madison	4.00 pCi/L	1