Somerset, CA Radon Mitigation and Testing

Q: What EPA Radon Zone is Somerset in?

Somerset is in El Dorado County, EPA Zone 2.

Q: How much does radon mitigation cost in Somerset?

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

El Dorado County

EPA Zone 2

Situated in El Dorado County within the Sacramento Metro foothills, Somerset occupies Sierra Nevada terrain where granite bedrock and decomposed granite soils create variable radon conditions. The 95684 community features rural residential properties and ranchettes, many built on crawl spaces or slab foundations typical of California's Gold Country. Testing data remains limited, making individual property assessments essential for residents in this geologically diverse area.

Somerset, CA Radon Mitigation

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

Somerset, CA Radon Testing

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

Somerset Radon Facts

Key details about the radon risk profile for Somerset and the 95684 zip code area.

EPA Radon Zone

Zone 2 — Moderate Risk

County

El Dorado County, CA

Zip Code

95684

Predicted Screening Level

2–4 pCi/L (Zone 2)

Somerset and the 95684 zip code are located in El Dorado 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 Somerset, CA

What EPA Radon Zone is Somerset in?

Somerset and the 95684 zip code are in El Dorado 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 Somerset?

Radon mitigation in Somerset 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 Somerset?

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 California

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

City	Avg User Radon Level	Submissions
Los Angeles	7.83 pCi/L	6
Mammoth Lakes	10.80 pCi/L	5
San Jose	4.20 pCi/L	5
Rancho Palos Verdes	8.00 pCi/L	4
Woodland Hills	7.67 pCi/L	3
South Lake Tahoe	6.33 pCi/L	3
Palos Verdes Peninsula	6.00 pCi/L	3
Bishop	5.67 pCi/L	3
Sacramento	4.33 pCi/L	3
Oakland	3.33 pCi/L	3
Fresno	10.00 pCi/L	2
Davis	8.00 pCi/L	2
Palo Alto	6.50 pCi/L	2
Studio City	6.50 pCi/L	2
Menlo Park	5.00 pCi/L	2
Truckee	5.00 pCi/L	2
Walnut Creek	4.00 pCi/L	2
San Diego	3.50 pCi/L	2
San Francisco	3.50 pCi/L	2
Belmont	20.00 pCi/L	1