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 arsenic at 1,017× 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 (77%), 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 sitesD to F
- Oil and gas wellsD
- Parks and nature nearbyB to D
- Air qualityB to D
- Drinking water qualityA to D
- Pesticide useA to B
- Neighborhood health statusA to F
- Past wildfire impactsA
- Past flood impactsC
- Noise levelsA to D
Based on 15 census tracts · compiled October 25, 2026 · how each grade works and its sources
Loading the full report, with every source…