Barnstable County, MA

ZIP 02671

In ZIP 02671, 3 of the 12 things we check have at least one part graded D or F.

• Drinking water: Harwich Water Department meets every EPA legal limit; 8 contaminants are above health goals, led by arsenic at 417× 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: Canal Generating LLC (73%), mostly sulfuric acid.
• Fine particles (PM2.5) average 5.1 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 2,265 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 02671

• Superfund sites nearbyA
• Factories and industrial sitesA
• Oil and gas wellsA
• Parks and nature nearbyC to D
• Air qualityA
• Drinking water qualityD
• Pesticide useB
• Neighborhood health statusD
• Past wildfire impactsA
• Past flood impactsC
• Noise levelsA to B

Based on 2 census tracts · compiled September 10, 2026 · how each grade works and its sources

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