High Island, TX Radon Levels
Check local High Island radon levels and find certified testing and mitigation professionals to keep your home safe
High Island, TX Radon Facts
EPA Radon Zone
Zone 3 — Low Risk
< 2.0 pCi/L (Zone 3)
County
Galveston County, TX
Zip Code
77623
Located in coastal Galveston County within the Houston Metro area, High Island sits on sandy Gulf Coast sediments that typically produce lower radon levels. Testing data remains limited for this coastal community in zip code 77623, making individual home testing important for establishing local radon patterns.
High Island, 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 High Island?
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1-800-299-3578
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Radon FAQ for High Island, TX
What EPA Radon Zone is High Island in?
High Island and the 77623 zip code are in Galveston 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 High Island?
Radon mitigation in High Island 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 High Island?
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 |