Commonwealth Utilities Corp (Tinian)
MP — Community Water System — PWSID: MP0000002
System Information
| PWSID | MP0000002 |
| System Name | Commonwealth Utilities Corp (Tinian) |
| System Type | Community Water System |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | State |
| EPA Region | 09 |
| Serves School | No |
| Wholesaler | Yes |
| First Reported | Jan 21, 1981 |
| Last Reported | Dec 19, 2025 |
Location & Contact
| State | MP |
| City | Saipan |
| ZIP Code | 96950 |
| Address | Joeten Dandan Building |
| Organization | Commonwealth Utility Corporation |
| Phone | 6706644282 |
Population & Service
| Population Served | 3,005 |
| Service Connections | 733 |
Drinking Water Violations (17)
This water system has 17 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Dec 31, 2022 | — | Public Notice | Other | No | No | — | — | — | Resolved | Jun 30, 2023 | Public Notice Rule and Revised PN Rule |
| Dec 31, 2022 | — | Groundwater Rule | TT | Yes | No | — | — | — | Resolved | Feb 28, 2023 | Ground Water Rule |
| Jan 1, 2020 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Sep 23, 2022 | Lead and Copper Rule |
| Jul 30, 2019 | — | Groundwater Rule | TT | Yes | No | — | — | — | Resolved | Aug 2, 2022 | Ground Water Rule |
| Aug 1, 2008 | Aug 31, 2008 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Aug 31, 2008 | Total Coliform Rule |
| Apr 1, 2008 | Apr 30, 2008 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Apr 30, 2008 | Total Coliform Rule |
| Apr 1, 2007 | Apr 30, 2007 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Apr 30, 2007 | Total Coliform Rule |
| Jan 1, 2005 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Dec 14, 2005 | Lead and Copper Rule |
| Jan 1, 2005 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Dec 14, 2005 | Lead and Copper Rule |
| Jan 1, 2003 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Dec 14, 2005 | Lead and Copper Rule |
| Jan 1, 2003 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Dec 14, 2005 | Lead and Copper Rule |
| Jul 1, 2002 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | May 24, 2005 | Lead and Copper Rule |
| Jul 1, 2002 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | May 24, 2005 | Lead and Copper Rule |
| Jan 1, 2002 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | May 24, 2005 | Lead and Copper Rule |
| Jan 1, 2002 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | May 24, 2005 | Lead and Copper Rule |
| Jul 1, 2001 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Jun 26, 2003 | Lead and Copper Rule |
| Jul 1, 2001 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Jun 26, 2003 | Lead and Copper Rule |
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.