Montgomery County, TX
ZIP 77384
In ZIP 77384, 6 of the 12 things we check have at least one part graded D or F.
- Drinking water: Montgomery County Mud 112 meets every EPA legal limit; 6 contaminants are above health goals, led by lithium at 4.4× the USGS health-based screening level.
- Nearest Superfund site: Conroe Creosoting Co., 6.1 miles away (2 within 10 miles).
- Largest share of modeled toxic air from industry: Baker Hughes - Hughes Christensen (65%), mostly chromium.
- Fine particles (PM2.5) average 8.6 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 77384
- Superfund sites nearbyA to D
- Factories and industrial sitesD to F
- Oil and gas wellsD
- Parks and nature nearbyB to D
- Air qualityC to D
- Drinking water qualityA to C
- Pesticide useA to C
- Neighborhood health statusA to C
- Past wildfire impactsA
- Past flood impactsC
- Noise levelsA to D
Based on 6 census tracts · compiled October 25, 2026 · how each grade works and its sources
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