GWA SOUTHERN WATER SYSTEM
GU — Community Water System — PWSID: GU0000001
System Information
| PWSID | GU0000001 |
| System Name | GWA SOUTHERN WATER SYSTEM |
| System Type | Community Water System |
| Water Source | Surface Water |
| Activity Status | Active |
| Owner Type | State |
| EPA Region | 09 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Mar 10, 1980 |
| Last Reported | Dec 30, 2025 |
Location & Contact
| State | GU |
| City | MANGILAO |
| ZIP Code | 96913 |
| Address | Gloria B. Nelson Public Service Building |
| Organization | BORDALLO, MIGUEL |
| Phone | 671-300-6845 |
Population & Service
| Population Served | 5,801 |
| Service Connections | 1,900 |
Drinking Water Violations (2)
This water system has 2 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Jan 1, 2012 | Mar 31, 2012 | Total Haloacetic Acids (HAA5) | MCL | Yes | No | .065 MG/L | 0.060 mg/L | — | Resolved | Mar 31, 2012 | Stage 1 Disinfectants and Disinfection Byproducts Rule |
| Jun 14, 1980 | Jul 13, 1980 | Other | No | No | — | — | — | Archived | Jul 13, 1980 | Miscellaneous Other Rules |
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.