Harrison County, TX

ZIP 75661

In ZIP 75661, 4 of the 12 things we check have at least one part graded D or F.

• Drinking water: E M C Water Supply meets every EPA legal limit; 7 contaminants are above health goals, led by dibromochloromethane at 76× California’s Public Health Goal.
• Nearest Superfund site: Longhorn Army Ammunition Plant, 1.4 miles away.
• Largest share of modeled toxic air from industry: Eastman Chemical Co Texas Operations (65%), 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 13,773 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 75661

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

Based on 3 census tracts · compiled October 25, 2026 · how each grade works and its sources

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