Sioux Falls, SD Radon Levels

Q: What is the average radon level in Sioux Falls, SD?

Based on 2 user-submitted tests, the average radon level is 6.00 pCi/L.

Q: What EPA Radon Zone is Sioux Falls in?

Sioux Falls is in Minnehaha County, EPA Zone 1.

Q: How much does radon mitigation cost in Sioux Falls?

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

Check local Sioux Falls radon levels and find certified testing and mitigation professionals to keep your home safe

Sioux Falls, SD Radon Facts

EPA Radon Zone Zone 1 — High Risk > 4.0 pCi/L (Zone 1)

County Minnehaha County, SD

Zip Code 57103

Avg. User Level 6.00 pCi/L

User Tests 2

Homes in the 57108 zip code of Sioux Falls, located in Lincoln County, show an average radon level of 6.0 pCi/L, which exceeds the EPA action threshold. The area's glacial till deposits over Sioux Quartzite bedrock contribute to elevated radon potential throughout the metro region. Given these concerning levels, all residents should test their homes and consider mitigation if readings exceed 4.0 pCi/L.

6.00

pCi/L average

Above EPA Action Level

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

4.0 EPA

10+

Sioux Falls, SD Radon Mitigation

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Sioux Falls, SD Radon Levels

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

Radon Level	City	Home Age	Foundation
5 pCi/L	Sioux Falls, SD	0-20 Years	Full Basement
7 pCi/L	Sioux Falls, SD	0-20 Years	Full Basement

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Radon FAQ for Sioux Falls, SD

What is the average radon level in Sioux Falls, SD?

Based on 2 user-submitted tests, the average radon level in Sioux Falls is 6.00 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 Sioux Falls in?

Sioux Falls and the 57103 zip code are in Minnehaha 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 Sioux Falls?

Radon mitigation in Sioux Falls 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 Sioux Falls?

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 Dakota

Cities in South Dakota with the most user-submitted radon test data, ranked by number of submissions.

City	Avg User Radon Level	Submissions
Spearfish	7.75 pCi/L	4
Rapid City	10.50 pCi/L	2
Aberdeen	8.50 pCi/L	2
Sioux Falls	6.00 pCi/L	2
Watertown	6.00 pCi/L	2

Sioux Falls, SD Radon Levels

Check local Sioux Falls radon levels and find certified testing and mitigation professionals to keep your home safe

Sioux Falls, SD Radon Facts

Sioux Falls, SD Radon Mitigation

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Sioux Falls, SD Radon Levels

Radon FAQ for Sioux Falls, SD

Most Active Radon Markets in South Dakota

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