St. Helena Parish, LA

ZIP 70441

In ZIP 70441, 3 of the 12 things we check have at least one part graded D or F.

• Drinking water: Sunnyhill Water Association meets every EPA legal limit; 5 contaminants are above health goals, led by lead at 170× 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: Shaw Walker La LLC (98%), mostly chromium.
• Fine particles (PM2.5) average 7.3 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 8,695 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 70441

• Superfund sites nearbyA
• Factories and industrial sitesA
• Oil and gas wellsA to C
• Parks and nature nearbyC
• Air qualityB to C
• Drinking water qualityC to F
• Pesticide useF
• Neighborhood health statusF
• Past wildfire impactsA
• Past flood impactsC
• Noise levelsA
• Radiation signalsB

Based on 3 census tracts · compiled September 10, 2026 · how each grade works and its sources

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