St. Tammany Parish, LA

ZIP 70445

In ZIP 70445, 2 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; 9 contaminants are above health goals, led by arsenic at 256× California’s Public Health Goal.
• Nearest Superfund site: Southern Shipbuilding, 5.9 miles away (2 within 10 miles).
• Largest share of modeled toxic air from industry: Rain Cii Carbon LLC (59%), mostly nickel compounds.
• Fine particles (PM2.5) average 7.3 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 70445

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

Based on 5 census tracts · compiled October 25, 2026 · how each grade works and its sources

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