Death Valley, CA Radon Levels

Q: What EPA Radon Zone is Death Valley in?

Death Valley is in Inyo County, EPA Zone 2.

Q: How much does radon mitigation cost in Death Valley?

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

Check local Death Valley radon levels and find certified testing and mitigation professionals to keep your home safe

Death Valley, CA Radon Facts

EPA Radon Zone Zone 2 — Moderate Risk 2–4 pCi/L (Zone 2)

County Inyo County, CA

Zip Code 92328

This remote desert location in Inyo County sits within one of North America's most unique geological settings, where ancient lake bed sediments and volcanic formations create the famous below-sea-level basin. Though radon testing data for zip code 92328 is currently unavailable, the sparse residential development and extreme desert conditions make this an unusual case for radon assessment. Any permanent residents should still consider testing, as California's diverse geology can produce unexpected radon levels even in remote areas.

Death Valley, 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 Death Valley, CA

What EPA Radon Zone is Death Valley in?

Death Valley and the 92328 zip code are in Inyo 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 Death Valley?

Radon mitigation in Death Valley 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 Death Valley?

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