Montgomery County, TX
ZIP 77357
In ZIP 77357, 8 of the 12 things we check have at least one part graded D or F.
- Drinking water: White Oak Valley Estates Water System meets every EPA legal limit; 8 contaminants are above health goals, led by lead at 46× California’s Public Health Goal.
- Closer to Superfund sites than 0% of U.S. neighborhoods, with no listed site within 10 miles of its center.
- Largest share of modeled toxic air from industry: Lyondell Chemical Co (53%), mostly ethylene oxide.
- Fine particles (PM2.5) average 8.2 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 77357
- Superfund sites nearbyA
- Factories and industrial sitesB to D
- Oil and gas wellsC to D
- Parks and nature nearbyC to D
- Air qualityB to D
- Drinking water qualityC to F
- Pesticide useB to D
- Neighborhood health statusA to D
- Past wildfire impactsA
- Past flood impactsC
- Noise levelsA to D
- Radiation signalsB to C
Based on 11 census tracts · compiled September 10, 2026 · how each grade works and its sources
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