San Sebastián Municipio, PR

ZIP 00685

In ZIP 00685, 1 of the 12 things we check have at least one part graded D or F.

• 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: Edwards Lifesciences Technology Sarl (100%), mostly ethylene oxide.
• Fine particles (PM2.5) average 7.8 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.

Grades for ZIP 00685

• Superfund sites nearbyA
• Factories and industrial sitesB to D
• Oil and gas wellsA
• Parks and nature nearbyB to C
• Air qualityB to C
• Past wildfire impactsA
• Past flood impactsC

Based on 13 census tracts · compiled October 25, 2026 · how each grade works and its sources

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