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South Lake Tahoe, CA Radon Levels

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


South Lake Tahoe, CA Radon Facts

EPA Radon Zone Zone 2 — Moderate Risk 2–4 pCi/L (Zone 2)
County El Dorado County, CA
Zip Code 96150
Avg. User Level 6.30 pCi/L
User Tests 3

Perched at high elevation in El Dorado County within the Sacramento Metro area (zip code 96150), South Lake Tahoe shows an average radon level of 6.33 pCi/L that exceeds the EPA action level. The area's unique Sierra Nevada granite geology combined with seasonal home usage patterns contributes to elevated readings. With radon levels ranging from 5.0 to 9.0 pCi/L in recent testing, both year-round residents and vacation homeowners should prioritize radon mitigation.

6.30
pCi/L average
Above EPA Action Level

Based on 3 user-submitted radon tests for homes in South Lake Tahoe, CA. The EPA recommends taking action at or above 4.0 pCi/L.

0
4.0 EPA
10+

South Lake Tahoe, CA Radon Mitigation

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South Lake Tahoe, CA Radon Levels

User-submitted radon test readings from homes in the South Lake Tahoe area.

Radon LevelCityHome AgeFoundation
5 pCi/L South Lake Tahoe, CA 0-20 Years No Basement/All Crawl Space
9 pCi/L South Lake Tahoe, CA 21-50 Years Partial Basement

Have a radon test result for South Lake Tahoe? Submit your reading to help other homeowners.

Radon FAQ for South Lake Tahoe, CA

What is the average radon level in South Lake Tahoe, CA?
Based on 3 user-submitted tests, the average radon level in South Lake Tahoe is 6.30 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 South Lake Tahoe in?
South Lake Tahoe and the 96150 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 South Lake Tahoe?
Radon mitigation in South Lake Tahoe 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 South Lake Tahoe?
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 in California with the most user-submitted radon test data, ranked by number of submissions.

CityAvg User Radon LevelSubmissions
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
Bishop 6.25 pCi/L 4
Oakland 5.00 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
Sacramento 4.33 pCi/L 3