St. Landry Parish, LA

ZIP 70551

In ZIP 70551, 4 of the 12 things we check have at least one part graded D or F.

• Drinking water: Town Of Sunset Water System meets every EPA legal limit; 8 contaminants are above health goals, led by arsenic at 661× 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: Catalyst Recovery Of Louisiana LLC (71%), mostly cobalt compounds.
• Fine particles (PM2.5) average 7.5 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 253,365 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 70551

• Superfund sites nearbyA
• Factories and industrial sitesB
• Oil and gas wellsD
• Parks and nature nearbyD
• Air qualityC
• Drinking water qualityB to C
• Pesticide useF
• Neighborhood health statusF
• Past wildfire impactsA
• Past flood impactsC
• Noise levelsA
• Radiation signalsC

Based on 1 census tract · compiled October 25, 2026 · how each grade works and its sources

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