Cobb County, GA

ZIP 30090

In ZIP 30090, 3 of the 12 things we check have at least one part graded D or F.

• Drinking water: Marietta Board Of Lights And Water meets every EPA legal limit; 8 contaminants are above health goals, led by bromodichloromethane at 133× California’s Public Health Goal.
• Closer to Superfund sites than 0% of U.S. neighborhoods, with no listed site within 10 miles of its center.
• Largest share of modeled toxic air from industry: Dow Chemical Co (75%), mostly diisocyanates.
• Fine particles (PM2.5) average 8.6 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 1,694 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 30090

• Superfund sites nearbyA
• Factories and industrial sitesD
• Oil and gas wellsA
• Parks and nature nearbyD
• Air qualityD
• Drinking water qualityC
• Pesticide useB
• Neighborhood health statusC
• Past wildfire impactsA
• Past flood impactsA
• Noise levelsA

Based on 1 census tract · compiled September 10, 2026 · how each grade works and its sources

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