Idyllwild, CA Radon Levels
Check local Idyllwild radon levels and find certified testing and mitigation professionals to keep your home safe
Idyllwild, CA Radon Facts
EPA Radon Zone
Zone 2 — Moderate Risk
2–4 pCi/L (Zone 2)
County
Riverside County, CA
Zip Code
92549
High in the San Jacinto Mountains of Riverside County, Idyllwild sits on granitic bedrock and decomposed granite soils at over 5,000 feet elevation. Testing data for this 92549 zip code mountain community remains limited, though granite formations can sometimes produce elevated radon in enclosed spaces. Mountain homes with basements or crawl spaces should prioritize radon testing regardless of the scenic alpine setting.
Idyllwild, 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 Idyllwild?
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Radon FAQ for Idyllwild, CA
What EPA Radon Zone is Idyllwild in?
Idyllwild and the 92549 zip code are in Riverside 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 Idyllwild?
Radon mitigation in Idyllwild 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 Idyllwild?
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 |