Harris County, TX

ZIP 77396

In ZIP 77396, 7 of the 12 things we check have at least one part graded D or F.

• Drinking water: Trail Of The Lakes Mud has 2 contaminants at or over an EPA legal limit; 11 contaminants are above health goals, led by arsenic at 842× California’s Public Health Goal.
• Nearest Superfund site: North Cavalcade Street, 7.4 miles away (3 within 10 miles).
• Largest share of modeled toxic air from industry: Lyondell Chemical Co (25%), mostly ethylene oxide.
• Fine particles (PM2.5) average 8.9 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 77396

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

Based on 18 census tracts · compiled October 25, 2026 · how each grade works and its sources

Loading the full report, with every source…