MAYAGUEZ
PR — Community Water System — PWSID: PR0003283
System Information
| PWSID | PR0003283 |
| System Name | MAYAGUEZ |
| System Type | Community Water System |
| Water Source | Surface Water |
| Activity Status | Active |
| Owner Type | Local |
| EPA Region | 02 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Mar 1, 1980 |
| Last Reported | Dec 23, 2025 |
Location & Contact
| State | PR |
| City | MAYAGUEZ |
| ZIP Code | 00680 |
| Address | CARR. 108 KM. 2 HM. 8 |
| Organization | MAYAGUEZ |
| Phone | 787-620-2277 |
Population & Service
| Population Served | 151,555 |
| Service Connections | 56,762 |
Drinking Water Violations (1,173)
This water system has 1,173 violations recorded in the EPA SDWIS database.
| Begin Date | End Date | Contaminant | Category | Health-Based | Major | Measured | Federal MCL | State MCL | Status | Return to Compliance | Rule |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Sep 1, 2022 | Sep 30, 2022 | Interim Enhanced Surface Water Treatment Rule | TT | Yes | No | — | — | — | Resolved | Sep 30, 2022 | Interim and Long Term 1 Enhanced Surface Water Treatment Rule |
| Sep 1, 2022 | Sep 30, 2022 | Interim Enhanced Surface Water Treatment Rule | TT | Yes | No | — | — | — | Resolved | Sep 30, 2022 | Interim and Long Term 1 Enhanced Surface Water Treatment Rule |
| Jan 1, 2022 | Dec 31, 2022 | Antimony, Total | MR | No | No | — | 0.006 mg/L | — | Resolved | Dec 31, 2022 | Inorganic Chemicals |
| Jan 1, 2022 | Dec 31, 2022 | Barium | MR | No | No | — | 2 mg/L | — | Resolved | Dec 31, 2022 | Inorganic Chemicals |
| Jan 1, 2022 | Dec 31, 2022 | Thallium, Total | MR | No | No | — | 0.002 mg/L | — | Resolved | Dec 31, 2022 | Inorganic Chemicals |
| Jan 1, 2022 | Dec 31, 2022 | Selenium | MR | No | No | — | 0.05 mg/L | — | Resolved | Dec 31, 2022 | Inorganic Chemicals |
| Jan 1, 2022 | Dec 31, 2022 | CYANIDE | MR | No | No | — | 0.2 mg/L | — | Resolved | Dec 31, 2022 | Inorganic Chemicals |
| Jan 1, 2022 | Dec 31, 2022 | Thallium, Total | MR | No | No | — | 0.002 mg/L | — | Resolved | Dec 31, 2022 | Inorganic Chemicals |
| Jan 1, 2022 | Dec 31, 2022 | Cadmium | MR | No | No | — | 0.005 mg/L | — | Resolved | Dec 31, 2022 | Inorganic Chemicals |
| Jan 1, 2022 | Dec 31, 2022 | Chromium | MR | No | No | — | 0.1 mg/L | — | Resolved | Dec 31, 2022 | Inorganic Chemicals |
| Jan 1, 2022 | Dec 31, 2022 | Barium | MR | No | No | — | 2 mg/L | — | Resolved | Dec 31, 2022 | Inorganic Chemicals |
| Jan 1, 2022 | Dec 31, 2022 | CYANIDE | MR | No | No | — | 0.2 mg/L | — | Resolved | Dec 31, 2022 | Inorganic Chemicals |
| Jan 1, 2022 | Dec 31, 2022 | Chromium | MR | No | No | — | 0.1 mg/L | — | Resolved | Dec 31, 2022 | Inorganic Chemicals |
| Jan 1, 2022 | Dec 31, 2022 | Barium | MR | No | No | — | 2 mg/L | — | Resolved | Dec 31, 2022 | Inorganic Chemicals |
| Jan 1, 2022 | Dec 31, 2022 | Thallium, Total | MR | No | No | — | 0.002 mg/L | — | Resolved | Dec 31, 2022 | Inorganic Chemicals |
| Jan 1, 2022 | Dec 31, 2022 | Beryllium, Total | MR | No | No | — | 0.004 mg/L | — | Resolved | Dec 31, 2022 | Inorganic Chemicals |
| Jan 1, 2022 | Dec 31, 2022 | Selenium | MR | No | No | — | 0.05 mg/L | — | Resolved | Dec 31, 2022 | Inorganic Chemicals |
| Jan 1, 2022 | Dec 31, 2022 | Antimony, Total | MR | No | No | — | 0.006 mg/L | — | Resolved | Dec 31, 2022 | Inorganic Chemicals |
| Jan 1, 2022 | Dec 31, 2022 | Mercury | MR | No | No | — | 0.002 mg/L | — | Resolved | Dec 31, 2022 | Inorganic Chemicals |
| Jan 1, 2022 | Dec 31, 2022 | Arsenic | MR | No | No | — | 0.010 mg/L | — | Resolved | Dec 31, 2022 | Arsenic Rule |
| Jan 1, 2022 | Dec 31, 2022 | Arsenic | MR | No | No | — | 0.010 mg/L | — | Resolved | Dec 31, 2022 | Arsenic Rule |
| Jan 1, 2022 | Dec 31, 2022 | Mercury | MR | No | No | — | 0.002 mg/L | — | Resolved | Dec 31, 2022 | Inorganic Chemicals |
| Jan 1, 2022 | Dec 31, 2022 | Beryllium, Total | MR | No | No | — | 0.004 mg/L | — | Resolved | Dec 31, 2022 | Inorganic Chemicals |
| Jan 1, 2022 | Dec 31, 2022 | Chromium | MR | No | No | — | 0.1 mg/L | — | Resolved | Dec 31, 2022 | Inorganic Chemicals |
| Jan 1, 2022 | Dec 31, 2022 | CYANIDE | MR | No | No | — | 0.2 mg/L | — | Resolved | Dec 31, 2022 | Inorganic Chemicals |
| Jan 1, 2022 | Dec 31, 2022 | Selenium | MR | No | No | — | 0.05 mg/L | — | Resolved | Dec 31, 2022 | Inorganic Chemicals |
| Jan 1, 2022 | Dec 31, 2022 | Thallium, Total | MR | No | No | — | 0.002 mg/L | — | Resolved | Dec 31, 2022 | Inorganic Chemicals |
| Jan 1, 2022 | Dec 31, 2022 | Arsenic | MR | No | No | — | 0.010 mg/L | — | Resolved | Dec 31, 2022 | Arsenic Rule |
| Jan 1, 2022 | Dec 31, 2022 | Arsenic | MR | No | No | — | 0.010 mg/L | — | Resolved | Dec 31, 2022 | Arsenic Rule |
| Jan 1, 2022 | Dec 31, 2022 | Selenium | MR | No | No | — | 0.05 mg/L | — | Resolved | Dec 31, 2022 | Inorganic Chemicals |
| Jan 1, 2022 | Dec 31, 2022 | Thallium, Total | MR | No | No | — | 0.002 mg/L | — | Resolved | Dec 31, 2022 | Inorganic Chemicals |
| Jan 1, 2022 | Dec 31, 2022 | Mercury | MR | No | No | — | 0.002 mg/L | — | Resolved | Dec 31, 2022 | Inorganic Chemicals |
| Jan 1, 2022 | Dec 31, 2022 | Chromium | MR | No | No | — | 0.1 mg/L | — | Resolved | Dec 31, 2022 | Inorganic Chemicals |
| Jan 1, 2022 | Dec 31, 2022 | Barium | MR | No | No | — | 2 mg/L | — | Resolved | Dec 31, 2022 | Inorganic Chemicals |
| Jan 1, 2022 | Dec 31, 2022 | Selenium | MR | No | No | — | 0.05 mg/L | — | Resolved | Dec 31, 2022 | Inorganic Chemicals |
| Jan 1, 2022 | Dec 31, 2022 | Thallium, Total | MR | No | No | — | 0.002 mg/L | — | Resolved | Dec 31, 2022 | Inorganic Chemicals |
| Jan 1, 2022 | Dec 31, 2022 | Mercury | MR | No | No | — | 0.002 mg/L | — | Resolved | Dec 31, 2022 | Inorganic Chemicals |
| Jan 1, 2022 | Dec 31, 2022 | CYANIDE | MR | No | No | — | 0.2 mg/L | — | Resolved | Dec 31, 2022 | Inorganic Chemicals |
| Jan 1, 2022 | Dec 31, 2022 | CYANIDE | MR | No | No | — | 0.2 mg/L | — | Resolved | Dec 31, 2022 | Inorganic Chemicals |
| Jan 1, 2022 | Dec 31, 2022 | Beryllium, Total | MR | No | No | — | 0.004 mg/L | — | Resolved | Dec 31, 2022 | Inorganic Chemicals |
| Jan 1, 2022 | Dec 31, 2022 | Arsenic | MR | No | No | — | 0.010 mg/L | — | Resolved | Dec 31, 2022 | Arsenic Rule |
| Jan 1, 2022 | Dec 31, 2022 | Barium | MR | No | No | — | 2 mg/L | — | Resolved | Dec 31, 2022 | Inorganic Chemicals |
| Jan 1, 2022 | Dec 31, 2022 | Arsenic | MR | No | No | — | 0.010 mg/L | — | Resolved | Dec 31, 2022 | Arsenic Rule |
| Jan 1, 2022 | Dec 31, 2022 | Chromium | MR | No | No | — | 0.1 mg/L | — | Resolved | Dec 31, 2022 | Inorganic Chemicals |
| Jan 1, 2022 | Dec 31, 2022 | Chromium | MR | No | No | — | 0.1 mg/L | — | Resolved | Dec 31, 2022 | Inorganic Chemicals |
| Jan 1, 2022 | Dec 31, 2022 | Beryllium, Total | MR | No | No | — | 0.004 mg/L | — | Resolved | Dec 31, 2022 | Inorganic Chemicals |
| Jan 1, 2022 | Dec 31, 2022 | Cadmium | MR | No | No | — | 0.005 mg/L | — | Resolved | Dec 31, 2022 | Inorganic Chemicals |
| Jan 1, 2022 | Dec 31, 2022 | Barium | MR | No | No | — | 2 mg/L | — | Resolved | Dec 31, 2022 | Inorganic Chemicals |
| Jan 1, 2022 | Dec 31, 2022 | Selenium | MR | No | No | — | 0.05 mg/L | — | Resolved | Dec 31, 2022 | Inorganic Chemicals |
| Jan 1, 2022 | Dec 31, 2022 | CYANIDE | MR | No | No | — | 0.2 mg/L | — | Resolved | Dec 31, 2022 | Inorganic Chemicals |
About This Water System
Public water system data comes from the EPA Safe Drinking Water Information System (SDWIS). Systems with violations must notify customers. Contact your water utility for the latest annual water quality report.