Catheys Valley, CA Radon Levels
Check local Catheys Valley radon levels and find certified testing and mitigation professionals to keep your home safe
Catheys Valley, CA Radon Facts
EPA Radon Zone
Zone 2 — Moderate Risk
2–4 pCi/L (Zone 2)
County
Mariposa County, CA
Zip Code
95306
Nestled in the Sierra Nevada foothills of Mariposa County, Catheys Valley sits on granite bedrock formations that typically produce lower radon levels. The community's mix of ranch-style homes and newer constructions often feature slab-on-grade foundations common to California's Central Valley region. While radon testing data for zip code 95306 remains limited, homeowners should still consider testing to establish baseline levels in their specific properties.
Catheys Valley, 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 Catheys Valley?
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Radon FAQ for Catheys Valley, CA
What EPA Radon Zone is Catheys Valley in?
Catheys Valley and the 95306 zip code are in Mariposa 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 Catheys Valley?
Radon mitigation in Catheys 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 Catheys 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 |