Jefferson County, TX

ZIP 77629

In ZIP 77629, 5 of the 12 things we check have at least one part graded D or F.

• Drinking water: Raywood Water System meets every EPA legal limit; 6 contaminants are above health goals, led by arsenic at 1,025× California’s Public Health Goal.
• Nearest Superfund site: Petro-Chemical Systems, Inc. (turtle Bayou), 7.3 miles away.
• Largest share of modeled toxic air from industry: Huntsman Petrochemical LLC Port Neches Facility (82%), mostly ethylene oxide.
• Fine particles (PM2.5) average 7.1 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 70,700 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 77629

• Superfund sites nearbyA to C
• Factories and industrial sitesD to F
• Oil and gas wellsD to F
• Parks and nature nearbyC to D
• Air qualityB
• Drinking water qualityB to C
• Pesticide useF
• Neighborhood health statusC to F
• Past wildfire impactsA
• Past flood impactsB to C
• Noise levelsA
• Radiation signalsA to B

Based on 3 census tracts · compiled October 25, 2026 · how each grade works and its sources

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