Commonwealth Utilities Corp (Saipan)
PWS ID: MP0000001 · Saipan, Northern Mariana Islands 96950
PFAS Detected
10 PFAS "forever chemicals" detected in testing under EPA's UCMR5 monitoring program.
Population Served
48,524
Total Violations
82
Health-Based Violations
56
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- State
- Connections
- 11,317
- School/Daycare
- No
- MCL Violations
- 45
- Monitoring Violations
- 26
- Treatment Tech Violations
- 11
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MCL | 43 | 2016 |
| Coliform (TCR) | MR | 14 | 2015 |
| Lead and Copper Rule | MR | 12 | 2005 |
| Groundwater Rule | TT | 10 | 2021 |
| Revised Total Coliform Rule | MCL | 2 | 2023 |
| Revised Total Coliform Rule | TT | 1 | 2023 |
PFAS Testing Results (UCMR5)
Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 48 of 813 samples detected PFAS.
| Contaminant | Date | Result | MRL | Status |
|---|---|---|---|---|
| PFTrDA | 9/9/2024 | <0.007 µg/L | 0.007 µg/L | Not Detected |
| PFTA | 9/9/2024 | <0.008 µg/L | 0.008 µg/L | Not Detected |
| NEtFOSAA | 9/9/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| NMeFOSAA | 9/9/2024 | <0.006 µg/L | 0.006 µg/L | Not Detected |
| PFBA | 9/9/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| NMeFOSAA | 9/9/2024 | <0.006 µg/L | 0.006 µg/L | Not Detected |
| PFBS | 9/9/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFHpA | 9/9/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFHxS | 9/9/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFNA | 9/9/2024 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFOS | 9/9/2024 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFOA | 9/9/2024 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFDA | 9/9/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFDoA | 9/9/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFHxA | 9/9/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFUnA | 9/9/2024 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| 11Cl-PF3OUdS | 9/9/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| NEtFOSAA | 9/9/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| HFPO-DA | 9/9/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| 6:2 FTS | 9/9/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| 4:2 FTS | 9/9/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| 8:2 FTS | 9/9/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFMPA | 9/9/2024 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFPeA | 9/9/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFMBA | 9/9/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFEESA | 9/9/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| NFDHA | 9/9/2024 | <0.02 µg/L | 0.02 µg/L | Not Detected |
| PFPeS | 9/9/2024 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFHpS | 9/9/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFTA | 9/9/2024 | <0.008 µg/L | 0.008 µg/L | Not Detected |
| PFTrDA | 9/9/2024 | <0.007 µg/L | 0.007 µg/L | Not Detected |
| ADONA | 9/9/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| 9Cl-PF3ONS | 9/9/2024 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| PFMBA | 9/9/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFPeA | 9/9/2024 | 0.0032 µg/L | 0.003 µg/L | Detected |
| 8:2 FTS | 9/9/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFHpS | 9/9/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| 4:2 FTS | 9/9/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| 6:2 FTS | 9/9/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFMPA | 9/9/2024 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFEESA | 9/9/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFPeS | 9/9/2024 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFBA | 9/9/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFOS | 9/9/2024 | 0.0040 µg/L | 0.004 µg/L | Detected |
| NFDHA | 9/9/2024 | <0.02 µg/L | 0.02 µg/L | Not Detected |
| HFPO-DA | 9/9/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| ADONA | 9/9/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| 9Cl-PF3ONS | 9/9/2024 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| 11Cl-PF3OUdS | 9/9/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFUnA | 9/9/2024 | <0.002 µg/L | 0.002 µg/L | Not Detected |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
PFAS data from EPA UCMR5 monitoring program (2023-2025).
This data is provided for informational purposes only.