Torrance, CA Radon Levels

Q: What is the average radon level in Torrance, CA?

Based on 1 user-submitted tests, the average radon level is 3.00 pCi/L.

Q: What EPA Radon Zone is Torrance in?

Torrance is in Los Angeles County, EPA Zone 2.

Q: How much does radon mitigation cost in Torrance?

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

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

Torrance, CA Radon Facts

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

County Los Angeles County, CA

Zip Code 90501

Avg. User Level 3.00 pCi/L

User Tests 1

Torrance in Los Angeles County shows an average radon level of 3.0 pCi/L across multiple zip codes (90501-90506), remaining within EPA recommended guidelines but still warranting homeowner awareness. This South Bay community sits on marine sedimentary formations that generally produce lower radon levels than granite-based soils found elsewhere in California. The area's predominantly post-1950s housing stock with concrete slab foundations typically shows lower radon accumulation than homes with basements.

3.00

pCi/L average

Below EPA Action Level

Based on 1 user-submitted radon test for homes in Torrance, CA. The EPA recommends taking action at or above 4.0 pCi/L.

4.0 EPA

10+

Torrance, CA Radon Mitigation

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Torrance, CA Radon Levels

User-submitted radon test readings from homes in the Torrance area.

Radon Level	City	Home Age	Foundation
3 pCi/L	Torrance, CA	21-50 Years	No Basement/All Slab

Have a radon test result for Torrance? Submit your reading to help other homeowners.

Radon FAQ for Torrance, CA

What is the average radon level in Torrance, CA?

Based on 1 user-submitted test, the average radon level in Torrance is 3.00 pCi/L. This is below the EPA's recommended action level of 4.0 pCi/L. However, we recommend all homes be tested regardless of your neighbor's results.

What EPA Radon Zone is Torrance in?

Torrance and the 90501 zip code are in Los Angeles 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 Torrance?

Radon mitigation in Torrance 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 Torrance?

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

Torrance, CA Radon Levels

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

Torrance, CA Radon Facts

Torrance, CA Radon Mitigation

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Torrance, CA Radon Levels

Radon FAQ for Torrance, CA

Most Active Radon Markets in California

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