Harris County, TX

ZIP 77074

In ZIP 77074, 8 of the 12 things we check have at least one part graded D or F.

• Drinking water: City Of Houston meets every EPA legal limit; 15 contaminants are above health goals, led by arsenic at 878× California’s Public Health Goal.
• Nearest Superfund site: Crystal Chemical Co., 4.0 miles away.
• Largest share of modeled toxic air from industry: Equistar Chemicals Bayport Chemicals Plant (50%), mostly ethylene oxide.
• Fine particles (PM2.5) average 9.3 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 38,374 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 77074

• Superfund sites nearbyD
• Factories and industrial sitesF
• Oil and gas wellsA to D
• Parks and nature nearbyC to D
• Air qualityF
• Drinking water qualityC
• Pesticide useA to C
• Neighborhood health statusA to D
• Past wildfire impactsA
• Past flood impactsD
• Noise levelsA to D
• Radiation signalsA to C

Based on 20 census tracts · compiled October 25, 2026 · how each grade works and its sources

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