Terrebonne Parish, LA

ZIP 70397

In ZIP 70397, 2 of the 12 things we check have at least one part graded D or F.

• Drinking water: Houma Water Treatment Service Area meets every EPA legal limit; 10 contaminants are above health goals, led by bromodichloromethane at 245× California’s Public Health Goal.
• Closer to Superfund sites than 66% of U.S. neighborhoods, with no listed site within 10 miles of its center.
• Largest share of modeled toxic air from industry: Bollinger Houma Shipyards LLC (85%), mostly chromium.
• Fine particles (PM2.5) average 7.3 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 24,318 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 70397

• Superfund sites nearbyD
• Factories and industrial sitesB
• Oil and gas wellsC
• Parks and nature nearbyC
• Air qualityC
• Drinking water qualityC
• Pesticide useC
• Neighborhood health statusF
• Past wildfire impactsA
• Past flood impactsA

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

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