Zahl, ND Radon Levels
Check local Zahl radon levels and find certified testing and mitigation professionals to keep your home safe
Zahl, ND Radon Facts
EPA Radon Zone
Zone 1 — High Risk
> 4.0 pCi/L (Zone 1)
County
Williams County, ND
Zip Code
58856
Located in northwestern North Dakota's Williams County, Zahl occupies ZIP code 58856 in the Williston Basin where sedimentary geology can produce elevated radon levels. Testing data for this rural oil region community is currently limited, making professional radon assessment important for residents, particularly those in newer housing associated with recent energy development.
Zahl, ND 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 Zahl?
- 100% Free, No-Obligation Quotes
- Matches You with State-Licensed Williams County Pros
1-800-299-3578
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Radon FAQ for Zahl, ND
What EPA Radon Zone is Zahl in?
Zahl and the 58856 zip code are in Williams 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 Zahl?
Radon mitigation in Zahl 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 Zahl?
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 North Dakota
Cities in North Dakota with the most user-submitted radon test data, ranked by number of submissions.
| City | Avg User Radon Level | Submissions |
|---|---|---|
| Grand Forks | 13.50 pCi/L | 8 |
| Grafton | 7.67 pCi/L | 3 |
| Dickinson | 6.00 pCi/L | 3 |
| Watford City | 5.50 pCi/L | 2 |
| Bismarck | No submissions | 0 |