Galveston County, TX

ZIP 77573

In ZIP 77573, 7 of the 12 things we check have at least one part graded D or F.

• Drinking water: City Of Webster has 1 contaminant at or over an EPA legal limit; 12 contaminants are above health goals, led by pfos at 5.2× California’s Public Health Goal.
• Nearest Superfund site: Harris (farley Street), 8.6 miles away (3 within 10 miles).
• Largest share of modeled toxic air from industry: Dixie Chemical Co Inc (58%), mostly propyleneimine.
• Fine particles (PM2.5) average 8.9 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 11,820 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 77573

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

Based on 29 census tracts · compiled September 10, 2026 · how each grade works and its sources

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