Middletown, CA Radon Mitigation and Testing

Q: What EPA Radon Zone is Middletown in?

Middletown is in Lake County, EPA Zone 3.

Q: How much does radon mitigation cost in Middletown?

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

Lake County

EPA Zone 3

Located in Lake County in Northern California's volcanic region, Middletown sits within EPA Zone 3, indicating generally lower radon potential from the area's volcanic soils and Clear Lake basin sediments. The community's housing stock includes various construction styles adapted to the region's seismic activity. Testing data for zip code 95461 remains limited, making individual radon testing worthwhile for residents interested in understanding their home's radon levels.

Middletown, CA Radon Mitigation

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

Middletown, CA Radon Testing

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

Middletown Radon Facts

Key details about the radon risk profile for Middletown and the 95461 zip code area.

EPA Radon Zone

Zone 3 — Low Risk

County

Lake County, CA

Zip Code

95461

Predicted Screening Level

< 2.0 pCi/L (Zone 3)

Middletown and the 95461 zip code are located in Lake County, which has an EPA assigned Radon Zone of 3. A radon zone of 3 predicts an average indoor radon screening level less than 2 pCi/L. The EPA recommends testing every home regardless of zone classification.

Radon FAQ for Middletown, CA

What EPA Radon Zone is Middletown in?

Middletown and the 95461 zip code are in Lake County, which has an EPA assigned Radon Zone of 3. A zone of 3 predicts an average indoor radon screening level less than 2 pCi/L.

How much does radon mitigation cost in Middletown?

Radon mitigation in Middletown 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 Middletown?

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