Harris County, TX

ZIP 77084

In ZIP 77084, 7 of the 12 things we check have at least one part graded D or F.

• Drinking water: Harris County Mud 127 has 1 contaminant at or over an EPA legal limit; 12 contaminants are above health goals, led by lead at 38× California’s Public Health Goal.
• Nearest Superfund site: Crystal Chemical Co., 6.9 miles away (2 within 10 miles).
• Largest share of modeled toxic air from industry: Nov Rig Systems West Little York (31%), mostly chromium.
• Fine particles (PM2.5) average 9.1 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 77084

• Superfund sites nearbyA to D
• Factories and industrial sitesD to F
• Oil and gas wellsD
• Parks and nature nearbyC to F
• Air qualityD to F
• Drinking water qualityC to F
• Pesticide useB to C
• Neighborhood health statusA to C
• Past wildfire impactsA
• Past flood impactsC
• Noise levelsA to D
• Radiation signalsB to C

Based on 26 census tracts · compiled September 10, 2026 · how each grade works and its sources

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