Guayanilla Municipio, PR

ZIP 00656

In ZIP 00656, 1 of the 12 things we check have at least one part graded D or F.

• Nearest Superfund site: Ochoa Fertilizer Co., 6.8 miles away (2 within 10 miles).
• Largest share of modeled toxic air from industry: Planta Penuelas (61%), mostly polycyclic aromatic compounds.
• Fine particles (PM2.5) average 7.3 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.

Grades for ZIP 00656

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

Based on 7 census tracts · compiled September 10, 2026 · how each grade works and its sources

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