Lewiston, CA Radon Levels
Check local Lewiston radon levels and find certified testing and mitigation professionals to keep your home safe
Lewiston, CA Radon Facts
EPA Radon Zone
Zone 3 — Low Risk
< 2.0 pCi/L (Zone 3)
County
Trinity County, CA
Zip Code
96052
Situated in Trinity County in Northern California's mountainous region, Lewiston sits where Sierra Nevada geology creates varying radon potential across the landscape. Testing data remains limited for zip code 96052, making individual home radon testing important despite California's generally lower radon levels. The area's granite bedrock and mountain geography can create localized conditions where radon accumulation occurs in homes with basements or crawl spaces.
Lewiston, 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 Lewiston?
- 100% Free, No-Obligation Quotes
- Matches You with State-Licensed Trinity County Pros
1-800-299-3578
Toll-free · Mon–Fri 8am–6pm ET
Radon FAQ for Lewiston, CA
What EPA Radon Zone is Lewiston in?
Lewiston and the 96052 zip code are in Trinity 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 Lewiston?
Radon mitigation in Lewiston 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 Lewiston?
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 |