Mount Shasta, CA Radon Levels

Q: What EPA Radon Zone is Mount Shasta in?

Mount Shasta is in Siskiyou County, EPA Zone 3.

Q: How much does radon mitigation cost in Mount Shasta?

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

Check local Mount Shasta radon levels and find certified testing and mitigation professionals to keep your home safe

Mount Shasta, CA Radon Facts

EPA Radon Zone Zone 3 — Low Risk < 2.0 pCi/L (Zone 3)

County Siskiyou County, CA

Zip Code 96067

Set in Siskiyou County beneath the iconic Mount Shasta volcano, this community sits on volcanic soils and igneous bedrock that typically produce lower radon levels, consistent with California's EPA Zone 3 classification. Housing in zip code 96067 ranges from older mountain cabins to newer residential developments, with many homes built on crawl spaces or slab foundations due to the region's geology. Despite the generally lower radon potential, individual home testing remains advisable as geological variations can create localized elevated readings.

Mount Shasta, CA 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 Mount Shasta, CA

What EPA Radon Zone is Mount Shasta in?

Mount Shasta and the 96067 zip code are in Siskiyou 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 Mount Shasta?

Radon mitigation in Mount Shasta 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 Mount Shasta?

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.

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
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