Washington County, RI

ZIP 02804

In ZIP 02804, 4 of the 12 things we check have at least one part graded D or F.

• Drinking water: Rockville Mill Hopkinton, Llc has 1 contaminant at or over an EPA legal limit; 5 contaminants are above health goals, led by pfos at 10× 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: Pcc Structurals (68%), mostly cobalt.
• Fine particles (PM2.5) average 5.3 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 4,553 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 02804

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

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

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