Oxnard, CA Radon Levels
Check local Oxnard radon levels and find certified testing and mitigation professionals to keep your home safe
Oxnard, CA Radon Facts
EPA Radon Zone
Zone 1 — High Risk
> 4.0 pCi/L (Zone 1)
County
Ventura County, CA
Zip Code
93030
California's coastal Oxnard in Ventura County sits on marine terraces and alluvial deposits that typically produce lower radon levels. Testing data for the city's multiple zip codes (93030, 93033, 93035, 93036) remains limited, consistent with the EPA Zone 1 designation indicating lower radon risk. However, homeowners should still consider testing, especially in newer developments built over different geological formations or homes with unique construction features.
Oxnard, 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 Oxnard?
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Radon FAQ for Oxnard, CA
What EPA Radon Zone is Oxnard in?
Oxnard and the 93030 zip code are in Ventura County, which has an EPA assigned Radon Zone of 1. A zone of 1 predicts an average indoor radon screening level greater than 4 pCi/L.
How much does radon mitigation cost in Oxnard?
Radon mitigation in Oxnard 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 Oxnard?
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 |