Liberty County, TX

ZIP 77535

In ZIP 77535, 6 of the 12 things we check have at least one part graded D or F.

• Drinking water: Rancho San Vicente meets every EPA legal limit; 1 contaminant is above health goals, led by lead at 50× California’s Public Health Goal.
• Nearest Superfund site: Petro-Chemical Systems, Inc. (turtle Bayou), 9.2 miles away.
• Largest share of modeled toxic air from industry: Equistar Chemicals Bayport Chemicals Plant (43%), mostly ethylene oxide.
• Fine particles (PM2.5) average 7.4 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 77535

• Superfund sites nearbyA to C
• Factories and industrial sitesB to F
• Oil and gas wellsC to F
• Parks and nature nearbyC to D
• Air qualityB to C
• Drinking water qualityC to F
• Pesticide useC to F
• Neighborhood health statusC to D
• Past wildfire impactsA
• Past flood impactsC
• Noise levelsA
• Radiation signalsB to C

Based on 8 census tracts · compiled September 10, 2026 · how each grade works and its sources

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