Hanford, CA Radon Levels

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

Based on 1 user-submitted tests, the average radon level is 7.00 pCi/L.

Q: What EPA Radon Zone is Hanford in?

Hanford is in Kings County, EPA Zone 3.

Q: How much does radon mitigation cost in Hanford?

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

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

Hanford, CA Radon Facts

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

County Kings County, CA

Zip Code 93230

Avg. User Level 7.00 pCi/L

User Tests 1

Situated in California's Central Valley within Kings County, Hanford has recorded an average radon level of 7.0 pCi/L, significantly exceeding the EPA action level of 4.0 pCi/L. This elevated reading in ZIP code 93230 is notable for California, where radon levels typically remain lower than national averages. The area's agricultural soils over sedimentary bedrock, combined with seasonal temperature inversions, may contribute to these higher-than-expected concentrations that warrant immediate professional mitigation.

7.00

pCi/L average

Above EPA Action Level

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

4.0 EPA

10+

Hanford, CA Radon Mitigation

Professional radon mitigation is the most effective way to permanently lower radon levels and protect your household.

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Hanford, California Radon Levels

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

Radon Level	City	Home Age	Foundation	Submitted
7 pCi/L	Hanford, CA	21-50 Years	No Basement/All Slab	Oct 2022

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

Radon FAQ for Hanford, CA

What is the average radon level in Hanford, CA?

Based on 1 user-submitted test, the average radon level in Hanford is 7.00 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 Hanford in?

Hanford and the 93230 zip code are in Kings 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 Hanford?

Radon mitigation in Hanford 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 Hanford?

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