Saint Matthews, SC Radon Mitigation and Testing

Q: What is the average radon level in Saint Matthews, SC?

Based on 1 user-submitted tests, the average radon level is 5.00 pCi/L.

Q: What EPA Radon Zone is Saint Matthews in?

Saint Matthews is in Calhoun County, EPA Zone 3.

Q: How much does radon mitigation cost in Saint Matthews?

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

Avg: 5.00 pCi/L

Calhoun County

EPA Zone 3

1 user test

Saint Matthews is located in Calhoun County, South Carolina. With 1 user-submitted readings averaging 5.00 pCi/L, the area exceeds the EPA's 4.0 pCi/L action threshold, and testing is strongly recommended for homeowners in the 29135 zip code.

5.00

pCi/L average

Above EPA Action Level

Based on 1 user-submitted radon test for homes in Saint Matthews, SC. The EPA recommends taking action at or above 4.0 pCi/L.

4.0 EPA

10+

Saint Matthews, SC Radon Mitigation

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

Saint Matthews, SC Radon Testing

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

Saint Matthews, South Carolina Radon Levels

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

Radon Level	City	Home Age	Foundation	Submitted
5 pCi/L	Saint Matthews, SC	21-50 Years	No Basement/All Slab	Apr 2025

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

Saint Matthews Radon Facts

Key details about the radon risk profile for Saint Matthews and the 29135 zip code area.

EPA Radon Zone

Zone 3 — Low Risk

County

Calhoun County, SC

Zip Code

29135

Predicted Screening Level

< 2.0 pCi/L (Zone 3)

Avg. User Submitted Level

5.00 pCi/L

User Tests Submitted

Saint Matthews and the 29135 zip code are located in Calhoun 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 Saint Matthews, SC

What is the average radon level in Saint Matthews, SC?

Based on 1 user-submitted test, the average radon level in Saint Matthews is 5.00 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 Saint Matthews in?

Saint Matthews and the 29135 zip code are in Calhoun 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 Saint Matthews?

Radon mitigation in Saint Matthews 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 Saint Matthews?

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 South Carolina

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

City	Avg User Radon Level	Submissions
Fort Mill	6.00 pCi/L	1
Greenville	5.00 pCi/L	1