Hawthorne, CA Radon Levels

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

Based on 1 user-submitted tests, the average radon level is 2.00 pCi/L.

Q: What EPA Radon Zone is Hawthorne in?

Hawthorne is in Los Angeles County, EPA Zone 2.

Q: How much does radon mitigation cost in Hawthorne?

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

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

Hawthorne, CA Radon Facts

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

County Los Angeles County, CA

Zip Code 90250

Avg. User Level 2.00 pCi/L

User Tests 1

Located in Los Angeles County within the sprawling LA Metro area, Hawthorne sits atop coastal sedimentary formations that typically produce low radon levels. Local testing data shows an average radon concentration of 2.0 pCi/L, which falls within the EPA's recommended range, though homeowners should still test their properties. The city's primarily single-family housing stock, mostly built from the 1950s through 1980s, includes homes with both slab foundations and raised foundations typical of Southern California construction.

2.00

pCi/L average

Below EPA Action Level

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

4.0 EPA

10+

Hawthorne, CA Radon Mitigation

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Hawthorne, CA Radon Levels

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

Radon Level	City	Home Age	Foundation
2 pCi/L	Hawthorne, CA	0-20 Years	No Basement/All Slab

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Radon FAQ for Hawthorne, CA

What is the average radon level in Hawthorne, CA?

Based on 1 user-submitted test, the average radon level in Hawthorne is 2.00 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 Hawthorne in?

Hawthorne and the 90250 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 Hawthorne?

Radon mitigation in Hawthorne 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 Hawthorne?

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

Hawthorne, CA Radon Levels

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

Hawthorne, CA Radon Facts

Hawthorne, CA Radon Mitigation

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Hawthorne, CA Radon Levels

Radon FAQ for Hawthorne, CA

Most Active Radon Markets in California

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