Ponce Municipio, PR

ZIP 00731

In ZIP 00731, 3 of the 12 things we check have at least one part graded D or F.

• Nearest Superfund site: Proteco, 3.0 miles away (2 within 10 miles).
• Largest share of modeled toxic air from industry: Steri-Tech Inc. (95%), mostly ethylene oxide.
• Fine particles (PM2.5) average 8.0 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.

Grades for ZIP 00731

• Superfund sites nearbyA to D
• Factories and industrial sitesB to D
• Oil and gas wellsA
• Air qualityA to D
• Past wildfire impactsA
• Past flood impactsC

Based on 9 census tracts · compiled September 10, 2026 · how each grade works and its sources

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