Jefferson County, TX

ZIP 77629

In ZIP 77629, 6 of the 12 things we check have at least one part graded D or F.

• Drinking water: City Of Nome meets every EPA legal limit; 9 contaminants are above health goals, led by lead at 34× 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 sitesC to D
• Oil and gas wellsD to F
• Parks and nature nearbyD
• Air qualityB
• Drinking water qualityC to F
• Pesticide useF
• Neighborhood health statusC to F
• Past wildfire impactsA
• Past flood impactsB to C
• Noise levelsA
• Radiation signalsB to C

Based on 3 census tracts · compiled September 10, 2026 · how each grade works and its sources

Loading the full report, with every source…