County page
Mayaguez County
Mayaguez County currently shows 0 Superfund sites, 11 imported facility profiles, and 254 lbs in loaded TRI releases.
Overview
What this county page is saying
This live county page is generated from the ingested EPA datasets. It merges ECHO facility compliance rows, TRI release totals, and any Superfund sites attached to Mayaguez County.
The latest loaded TRI year is 2024, with 254 lbs in county-level on-site releases tied to the imported facility set.
Focus points
Design and product notes
County pages combine facility compliance history with chemical release totals.
TRI chemistry shows what is being reported, while ECHO shows who keeps drawing enforcement attention.
Superfund records add legacy cleanup context even when live contaminant detail is still sparse.
Superfund layer
Cleanup sites in this county
Facilities
Worst polluters and compliance pressure
Compania Cervecera de Puerto Rico, Inc.
Violation Identified across 5 of the last 12 quarters, with $6,900 in recorded penalties.
Upr-mayaguez Campus
Violation across 12 of the last 12 quarters in the imported ECHO record.
Federacion Asociaciones Pecuarias de Puerto Rico
Significant Violation across 11 of the last 12 quarters in the imported ECHO record.
University of Puerto Rico Mayaguez Campus
Significant Violation across 11 of the last 12 quarters in the imported ECHO record.
Mayaguez Wwtp
Significant noncompliance across 3 of the last 12 quarters in the imported ECHO record.
Prepa Mayaguez Gas Turbines Power Plant
No Violation Identified. Last recorded ECHO inspection: 2023-05-23.
Petro West Mayaguez- Oil Energy Systems Inc
Violation Identified across 3 of the last 12 quarters in the imported ECHO record.
Mayaguez Regional Wastewater Treatment Plant
Violation Identified across 1 of the last 12 quarters in the imported ECHO record.
Compania Cervecera de Puerto Rico Inc
No Violation Identified. Last recorded ECHO inspection: 2022-04-25.
Prasa Miradero Wtp
No Violation Identified. Last recorded ECHO inspection: 2025-09-11.
Upr-mayaguez Campusoficina Del Rector
Unknown. Last recorded ECHO inspection: 2021-05-10.
| Chemical | Group | Facilities | Total pounds |
|---|---|---|---|
| Polycyclic aromatic compounds | TRI-listed chemical | 1 | 249 lbs |
| Nitric acid | TRI-listed chemical | 1 | 5 lbs |
| Nitrate compounds (water dissociable; reportable only when in aqueous solution) | TRI-listed chemical | 1 | 0 lbs |
| Naphthalene | TRI-listed chemical | 1 | 0 lbs |
Violation pages
State-level violation context tied to this county
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Clean Air Act violations in Puerto Rico
Puerto Rico facilities in the imported ECHO data show air-program oversight, inspections, or noncompliance signals.
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Clean Water Act violations in Puerto Rico
Puerto Rico facilities in the imported ECHO data show water-permit pressure, inspections, or noncompliance signals.
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RCRA violations in Puerto Rico
Puerto Rico facilities in the imported ECHO data show hazardous-waste or RCRA oversight signals.