Marshall, TX Radon Levels
Check local Marshall radon levels and find certified testing and mitigation professionals to keep your home safe
Marshall, TX Radon Facts
EPA Radon Zone
Zone 3 — Low Risk
< 2.0 pCi/L (Zone 3)
County
Harrison County, TX
Zip Code
75670
Situated in Harrison County within the Longview Metro area, Marshall's radon profile reflects East Texas's typical low-risk geological conditions. The 75670 zip code area sits over Cretaceous-era sedimentary deposits that generally produce minimal radon emissions. However, homeowners should still consider testing, as individual properties can occasionally exceed typical regional levels due to localized soil conditions or construction factors.
Marshall, 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 Marshall?
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Radon FAQ for Marshall, TX
What EPA Radon Zone is Marshall in?
Marshall and the 75670 zip code are in Harrison 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 Marshall?
Radon mitigation in Marshall 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 Marshall?
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 |