Liberty County, TX

ZIP 77575

In ZIP 77575, 5 of the 12 things we check have at least one part graded D or F.

• Drinking water: The Ranch Subdivision meets every EPA legal limit; 9 contaminants are above health goals, led by arsenic at 858× California’s Public Health Goal.
• Nearest Superfund site: Petro-Chemical Systems, Inc. (turtle Bayou), 6.7 miles away.
• Largest share of modeled toxic air from industry: Equistar Chemicals Bayport Chemicals Plant (36%), mostly ethylene oxide.
• Fine particles (PM2.5) average 7.3 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 77575

• Superfund sites nearbyA to D
• Factories and industrial sitesA to F
• Oil and gas wellsD to F
• Parks and nature nearbyA to C
• Air qualityB to C
• Drinking water qualityA to C
• Pesticide useD to F
• Neighborhood health statusD to F
• Past wildfire impactsA
• Past flood impactsC
• Noise levelsA
• Radiation signalsA to B

Based on 7 census tracts · compiled October 25, 2026 · how each grade works and its sources

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