Ramona, SD Radon Mitigation and Testing

Q: What EPA Radon Zone is Ramona in?

Ramona is in Lake County, EPA Zone 1.

Q: How much does radon mitigation cost in Ramona?

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

Lake County

EPA Zone 1

Located in Lake County within South Dakota's glacial lake region, Ramona sits over Prairie Pothole geology where glacial deposits and underlying bedrock influence subsurface conditions. Current testing data for zip code 57054 is insufficient to determine local radon levels. The area's glacial till and varied drainage patterns make individual property testing important for understanding specific radon exposure risks.

Ramona, SD Radon Mitigation

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

Ramona, SD Radon Testing

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

Ramona Radon Facts

Key details about the radon risk profile for Ramona and the 57054 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Lake County, SD

Zip Code

57054

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Ramona and the 57054 zip code are located in Lake 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 Ramona, SD

What EPA Radon Zone is Ramona in?

Ramona and the 57054 zip code are in Lake 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 Ramona?

Radon mitigation in Ramona 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 Ramona?

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

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