Timber Lake, SD Radon Levels

Q: What EPA Radon Zone is Timber Lake in?

Timber Lake is in Dewey County, EPA Zone 2.

Q: How much does radon mitigation cost in Timber Lake?

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

Check local Timber Lake radon levels and find certified testing and mitigation professionals to keep your home safe

Timber Lake, SD Radon Facts

EPA Radon Zone Zone 2 — Moderate Risk 2–4 pCi/L (Zone 2)

County Dewey County, SD

Zip Code 57656

Nestled in Dewey County along the Cheyenne River valley, Timber Lake sits on glacial drift soils that can influence radon accumulation patterns. While specific radon testing data for zip code 57656 remains limited, homeowners should prioritize testing given South Dakota's moderate-to-high radon potential. Regular testing is particularly important for homes with basements or lower-level living spaces in this rural community.

Timber Lake, SD Radon Mitigation

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

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Radon FAQ for Timber Lake, SD

What EPA Radon Zone is Timber Lake in?

Timber Lake and the 57656 zip code are in Dewey 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 Timber Lake?

Radon mitigation in Timber Lake 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 Timber Lake?

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