East Baton Rouge Parish, LA

ZIP 70820

In ZIP 70820, 9 of the 12 things we check have at least one part graded D or F.

• Drinking water: Baton Rouge Water Company meets every EPA legal limit; 15 contaminants are above health goals, led by arsenic at 214× California’s Public Health Goal.
• Nearest Superfund site: Capitol Lakes, 4.4 miles away.
• Largest share of modeled toxic air from industry: The Dow Chemical Co - Louisiana Operations (43%), mostly ethylene oxide.
• Fine particles (PM2.5) average 8.6 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 18,610 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 70820

• Superfund sites nearbyA to D
• Factories and industrial sitesD to F
• Oil and gas wellsF
• Parks and nature nearbyC to F
• Air qualityD
• Drinking water qualityD
• Pesticide useC to D
• Neighborhood health statusB to C
• Past wildfire impactsA
• Past flood impactsC to D
• Noise levelsA to D
• Radiation signalsB to C

Based on 11 census tracts · compiled September 10, 2026 · how each grade works and its sources

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