Farmington, CA Radon Levels
Check local Farmington radon levels and find certified testing and mitigation professionals to keep your home safe
Farmington, CA Radon Facts
EPA Radon Zone
Zone 3 — Low Risk
< 2.0 pCi/L (Zone 3)
County
Stanislaus County, CA
Zip Code
95230
Located in California's Central Valley within Stanislaus County and the Modesto metro area, Farmington sits in EPA Zone 3 where radon levels are typically moderate to low. The area's alluvial soil conditions and predominantly single-story construction patterns create specific radon risk profiles different from basement-heavy regions. Testing data remains limited for this community, though residents may still benefit from radon assessment as part of comprehensive home safety evaluation.
Farmington, CA Radon Mitigation
Professional radon mitigation is the most effective way to permanently lower radon levels and protect your household.
Need Radon Mitigation or Testing in Farmington?
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Radon FAQ for Farmington, CA
What EPA Radon Zone is Farmington in?
Farmington and the 95230 zip code are in Stanislaus 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 Farmington?
Radon mitigation in Farmington 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 Farmington?
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 |