Hardin County, TX

ZIP 77663

In ZIP 77663, 4 of the 12 things we check have at least one part graded D or F.

• Drinking water: Tyler County Sud meets every EPA legal limit; 8 contaminants are above health goals, led by lead at 10× California’s Public Health Goal.
• Closer to Superfund sites than 0% of U.S. neighborhoods, with no listed site within 10 miles of its center.
• Largest share of modeled toxic air from industry: Dragon Products North Silsbee Facility (76%), mostly chromium.
• Fine particles (PM2.5) average 7.0 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 4,947 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 77663

• Superfund sites nearbyA
• Factories and industrial sitesB to C
• Oil and gas wellsD
• Parks and nature nearbyB
• Air qualityB
• Drinking water qualityB to D
• Pesticide useC to D
• Neighborhood health statusF
• Past wildfire impactsA
• Past flood impactsB
• Noise levelsA
• Radiation signalsB

Based on 2 census tracts · compiled September 10, 2026 · how each grade works and its sources

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