Guaynabo Municipio, PR

ZIP 00966

In ZIP 00966, 3 of the 12 things we check have at least one part graded D or F.

• Nearest Superfund site: Naval Security Group Activity, 4.3 miles away (3 within 10 miles).
• Largest share of modeled toxic air from industry: Best Petroleum Corp Bulk Terminal (82%), mostly benzene.
• Fine particles (PM2.5) average 8.3 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.

Grades for ZIP 00966

• Superfund sites nearbyA to D
• Factories and industrial sitesD to F
• Oil and gas wellsA
• Air qualityD
• Past wildfire impactsA
• Past flood impactsC

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

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