Denison, TX Radon Levels
Check local Denison radon levels and find certified testing and mitigation professionals to keep your home safe
Denison, TX Radon Facts
EPA Radon Zone
Zone 3 — Low Risk
< 2.0 pCi/L (Zone 3)
County
Grayson County, TX
Zip Code
75020
Positioned in Grayson County within the Sherman Metro area, Denison lies on Cretaceous limestone and clay formations north of Dallas. Testing data for zip codes 75020 and 75021 remains limited, making local radon assessment challenging. While Texas generally shows moderate radon potential, the limestone bedrock common to North Texas can occasionally produce elevated readings, making individual home testing advisable.
Denison, TX 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 Denison?
- 100% Free, No-Obligation Quotes
- Matches You with State-Licensed Grayson County Pros
1-800-299-3578
Toll-free · Mon–Fri 8am–6pm ET
Radon FAQ for Denison, TX
What EPA Radon Zone is Denison in?
Denison and the 75020 zip code are in Grayson 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 Denison?
Radon mitigation in Denison 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 Denison?
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 Texas
Cities in Texas with the most user-submitted radon test data, ranked by number of submissions.
| City | Avg User Radon Level | Submissions |
|---|---|---|
| Lubbock | 12.70 pCi/L | 10 |
| San Antonio | 6.57 pCi/L | 7 |
| Austin | 6.14 pCi/L | 7 |
| Dallas | 8.00 pCi/L | 5 |
| Abilene | 4.50 pCi/L | 2 |
| Houston | 3.50 pCi/L | 2 |
| Plano | 6.00 pCi/L | 1 |
| Frisco | 3.00 pCi/L | 1 |
| Nacogdoches | No submissions | 0 |