Montgomery County, TX
ZIP 77304
In ZIP 77304, 8 of the 12 things we check have at least one part graded D or F.
- Drinking water: Lake Bonanza Wsc has 1 contaminant at or over an EPA legal limit; 9 contaminants are above health goals, led by lead at 87× California’s Public Health Goal.
- Nearest Superfund site: United Creosoting Co., 2.5 miles away (2 within 10 miles).
- Largest share of modeled toxic air from industry: Huntsman Petrochemical LLC (58%), mostly ethylene oxide.
- Fine particles (PM2.5) average 8.0 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
- About 14,209 kg of agricultural pesticides are applied in the county each year.
Grades for ZIP 77304
- Superfund sites nearbyD to F
- Factories and industrial sitesC to D
- Oil and gas wellsD
- Parks and nature nearbyC to F
- Air qualityB to D
- Drinking water qualityC to F
- Pesticide useB to C
- Neighborhood health statusB to D
- Past wildfire impactsA
- Past flood impactsC
- Noise levelsA to D
Based on 15 census tracts · compiled September 10, 2026 · how each grade works and its sources
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