Harris County, TX

ZIP 77433

In ZIP 77433, 6 of the 12 things we check have at least one part graded D or F.

• Drinking water: Towering Oaks And Rosewood Hills Subdivi meets every EPA legal limit; 3 contaminants are above health goals, led by arsenic at 496× California’s Public Health Goal.
• Nearest Superfund site: Jones Road Ground Water Plume, 5.4 miles away.
• Largest share of modeled toxic air from industry: Nov Rig Systems West Little York (31%), mostly chromium.
• Fine particles (PM2.5) average 9.0 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 77433

• Superfund sites nearbyA to D
• Factories and industrial sitesC to F
• Oil and gas wellsD
• Parks and nature nearbyB to D
• Air qualityC to F
• Drinking water qualityA to F
• Pesticide useA to C
• Neighborhood health statusA to B
• Past wildfire impactsA
• Past flood impactsC
• Noise levelsA to C
• Radiation signalsA

Based on 19 census tracts · compiled October 25, 2026 · how each grade works and its sources

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