Polacca
PWS ID: 090400106 · Polacca, 09 86042
PFAS Detected
1 PFAS "forever chemicals" detected in testing under EPA's UCMR5 monitoring program.
Population Served
4,108
Total Violations
473
Health-Based Violations
126
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Native American
- Connections
- 450
- School/Daycare
- No
- MCL Violations
- 124
- Monitoring Violations
- 283
- Treatment Tech Violations
- 2
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Arsenic | MCL | 117 | 2023 |
| Arsenic | MR | 29 | 2022 |
| Coliform (TCR) | MR | 26 | 2015 |
| Public Notice | Other | 15 | 2022 |
| Nitrate | MR | 12 | 2022 |
| Chlorine | MR | 8 | 2023 |
| Coliform (TCR) | MCL | 7 | 2009 |
| Total Haloacetic Acids (HAA5) | MR | 6 | 2015 |
| TTHM | MR | 6 | 2015 |
| E. COLI | MR | 6 | 2023 |
| Glyphosate | MR | 4 | 2020 |
| Picloram | MR | 4 | 2020 |
| 2,4-D | MR | 4 | 2020 |
| Benzo(a)pyrene | MR | 4 | 2020 |
| Barium | MR | 3 | 2011 |
| Cadmium | MR | 3 | 2011 |
| Chromium | MR | 3 | 2011 |
| CYANIDE | MR | 3 | 2011 |
| Fluoride | MR | 3 | 2011 |
| Mercury | MR | 3 | 2011 |
| Selenium | MR | 3 | 2011 |
| Antimony, Total | MR | 3 | 2011 |
| Beryllium, Total | MR | 3 | 2011 |
| Endrin | MR | 3 | 2011 |
| Methoxychlor | MR | 3 | 2011 |
| BHC-GAMMA | MR | 3 | 2011 |
| Toxaphene | MR | 3 | 2011 |
| Dalapon | MR | 3 | 2011 |
| Endothall | MR | 3 | 2011 |
| Di(2-ethylhexyl) adipate | MR | 3 | 2011 |
PFAS Testing Results (UCMR5)
Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 2 of 60 samples detected PFAS.
| Contaminant | Date | Result | MRL | Status |
|---|---|---|---|---|
| PFHxS | 4/30/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| HFPO-DA | 4/30/2025 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| 9Cl-PF3ONS | 4/30/2025 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| PFUnA | 4/30/2025 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| PFHxA | 4/30/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFDoA | 4/30/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFDA | 4/30/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFOA | 4/30/2025 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFBA | 4/30/2025 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFNA | 4/30/2025 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| ADONA | 4/30/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFHpA | 4/30/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| NMeFOSAA | 4/30/2025 | <0.006 µg/L | 0.006 µg/L | Not Detected |
| NEtFOSAA | 4/30/2025 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFTrDA | 4/30/2025 | <0.007 µg/L | 0.007 µg/L | Not Detected |
| PFTA | 4/30/2025 | <0.008 µg/L | 0.008 µg/L | Not Detected |
| PFBS | 4/30/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| lithium | 4/30/2025 | 34.1000 µg/L | 9 µg/L | Detected |
| PFOS | 4/30/2025 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFMBA | 4/30/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFPeA | 4/30/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFHpS | 4/30/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFPeS | 4/30/2025 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| 11Cl-PF3OUdS | 4/30/2025 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFEESA | 4/30/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| 6:2 FTS | 4/30/2025 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| 8:2 FTS | 4/30/2025 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| 4:2 FTS | 4/30/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFMPA | 4/30/2025 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| NFDHA | 4/30/2025 | <0.02 µg/L | 0.02 µg/L | Not Detected |
| NMeFOSAA | 4/15/2025 | <0.006 µg/L | 0.006 µg/L | Not Detected |
| PFTA | 4/15/2025 | <0.008 µg/L | 0.008 µg/L | Not Detected |
| NEtFOSAA | 4/15/2025 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFHxA | 4/15/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFTrDA | 4/15/2025 | <0.007 µg/L | 0.007 µg/L | Not Detected |
| PFDoA | 4/15/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFBS | 4/15/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFHpA | 4/15/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFHxS | 4/15/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFNA | 4/15/2025 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFOS | 4/15/2025 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFHpS | 4/15/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFEESA | 4/15/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| NFDHA | 4/15/2025 | <0.02 µg/L | 0.02 µg/L | Not Detected |
| PFPeS | 4/15/2025 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| 11Cl-PF3OUdS | 4/15/2025 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFDA | 4/15/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFMBA | 4/15/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFUnA | 4/15/2025 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| 9Cl-PF3ONS | 4/15/2025 | <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.