Windham County, CT

ZIP 06258

In ZIP 06258, 4 of the 12 things we check have at least one part graded D or F.

• Drinking water: The Rectory School meets every EPA legal limit; 9 contaminants are above health goals, led by lead at 40× California’s Public Health Goal.
• Nearest Superfund site: Linemaster Switch Corp., 5.5 miles away.
• Largest share of modeled toxic air from industry: Boston Scientific (48%), mostly ethylene oxide.
• Fine particles (PM2.5) average 5.6 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 28,025 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 06258

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

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

Loading the full report, with every source…