St. Tammany Parish, LA

ZIP 70460

In ZIP 70460, 7 of the 12 things we check have at least one part graded D or F.

• Drinking water: Timberland Mobile Home Park meets every EPA legal limit; 10 contaminants are above health goals, led by arsenic at 300× California’s Public Health Goal.
• Nearest Superfund site: Southern Shipbuilding, 1.0 miles away (2 within 10 miles).
• Largest share of modeled toxic air from industry: Rain Cii Carbon LLC (44%), mostly nickel compounds.
• Fine particles (PM2.5) average 8.0 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 4,970 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 70460

• Superfund sites nearbyC to F
• Factories and industrial sitesA to C
• Oil and gas wellsA to B
• Parks and nature nearbyB to F
• Air qualityC to D
• Drinking water qualityC to D
• Pesticide useB to D
• Neighborhood health statusD to F
• Past wildfire impactsA
• Past flood impactsC to D
• Noise levelsA
• Radiation signalsB

Based on 12 census tracts · compiled September 10, 2026 · how each grade works and its sources

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