St. Tammany Parish, LA

ZIP 70452

In ZIP 70452, 5 of the 12 things we check have at least one part graded D or F.

• Drinking water: St Tam Parish Salvation Manor St Joe meets every EPA legal limit; 10 contaminants are above health goals, led by bromodichloromethane at 171× California’s Public Health Goal.
• Nearest Superfund site: Bayou Bonfouca, 4.4 miles away (2 within 10 miles).
• Largest share of modeled toxic air from industry: International Paper Bogalusa Mill (46%), mostly formaldehyde.
• 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 70452

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

Based on 5 census tracts · compiled September 10, 2026 · how each grade works and its sources

Loading the full report, with every source…