Litchfield County, CT

ZIP 06790

In ZIP 06790, 6 of the 12 things we check have at least one part graded D or F.

• Drinking water: Winsted Water Works meets every EPA legal limit; 8 contaminants are above health goals, led by lead at 36× California’s Public Health Goal.
• Nearest Superfund site: Barkhamsted-New Hartford Landfill, 3.2 miles away.
• Largest share of modeled toxic air from industry: Mott Metallurgical Corp (58%), mostly chromium compounds.
• Fine particles (PM2.5) average 5.8 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 27,681 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 06790

• Superfund sites nearbyA to F
• Factories and industrial sitesC
• Oil and gas wellsA
• Parks and nature nearbyC to F
• Air qualityA
• Drinking water qualityC to F
• Pesticide useD
• Neighborhood health statusC to D
• Past wildfire impactsA
• Past flood impactsC
• Noise levelsA to C
• Radiation signalsD

Based on 13 census tracts · compiled September 10, 2026 · how each grade works and its sources

Loading the full report, with every source…