Walhalla, SC Radon Mitigation and Testing

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

Based on 2 user-submitted tests, the average radon level is 7.50 pCi/L.

Q: What EPA Radon Zone is Walhalla in?

Walhalla is in Oconee County, EPA Zone 2.

Q: How much does radon mitigation cost in Walhalla?

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

Avg: 7.50 pCi/L

Oconee County

EPA Zone 2

2 user tests

Walhalla is located in Oconee County, South Carolina. With 2 user-submitted readings averaging 7.50 pCi/L, the area exceeds the EPA's 4.0 pCi/L action threshold, and testing is strongly recommended for homeowners in the 29691 zip code.

7.50

pCi/L average

Above EPA Action Level

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

4.0 EPA

10+

Walhalla, SC Radon Mitigation

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

Walhalla, SC Radon Testing

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

Walhalla, South Carolina Radon Levels

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

Radon Level	City	Home Age	Foundation	Submitted
9 pCi/L	Walhalla, SC	21-50 Years	Full Basement	May 2025
6 pCi/L	Walhalla, SC	0-20 Years	Full Basement	Dec 2022

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

Walhalla Radon Facts

Key details about the radon risk profile for Walhalla and the 29691 zip code area.

EPA Radon Zone

Zone 2 — Moderate Risk

County

Oconee County, SC

Zip Code

29691

Predicted Screening Level

2–4 pCi/L (Zone 2)

Avg. User Submitted Level

7.50 pCi/L

User Tests Submitted

Walhalla and the 29691 zip code are located in Oconee County, which has an EPA assigned Radon Zone of 2. A radon zone of 2 predicts an average indoor radon screening level between 2 and 4 pCi/L. The EPA recommends testing every home regardless of zone classification.

Radon FAQ for Walhalla, SC

What is the average radon level in Walhalla, SC?

Based on 2 user-submitted tests, the average radon level in Walhalla is 7.50 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 Walhalla in?

Walhalla and the 29691 zip code are in Oconee County, which has an EPA assigned Radon Zone of 2. A zone of 2 predicts an average indoor radon screening level between 2 and 4 pCi/L.

How much does radon mitigation cost in Walhalla?

Radon mitigation in Walhalla 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 Walhalla?

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