EPCOR - CHAPARRAL CITY
PWS ID: AZ0407017 · EL MIRAGE, Arizona 85335
PFAS Detected
1 PFAS "forever chemicals" detected in testing under EPA's UCMR5 monitoring program.
Population Served
26,026
Total Violations
492
Health-Based Violations
12
Water Source
Surface Water
System Details
- System Type
- Community
- Owner Type
- Private
- Connections
- 13,438
- County
- Maricopa
- School/Daycare
- No
- MCL Violations
- 12
- Monitoring Violations
- 443
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Nitrate | MR | 19 | 2016 |
| Antimony, Total | MR | 16 | 2018 |
| Coliform (TCR) | MR | 15 | 2008 |
| Interim Enhanced Surface Water Treatment Rule | MR | 12 | 2004 |
| Fluoride | MR | 12 | 2019 |
| Selenium | MR | 11 | 2009 |
| Chromium | MR | 11 | 2009 |
| Barium | MR | 11 | 2009 |
| Cadmium | MR | 11 | 2009 |
| Mercury | MR | 11 | 2009 |
| Thallium, Total | MR | 10 | 2009 |
| Beryllium, Total | MR | 10 | 2009 |
| Consumer Confidence Rule | Other | 10 | 2011 |
| Arsenic | MR | 8 | 2023 |
| Nickel | MR | 7 | 2008 |
| CYANIDE | MR | 7 | 2008 |
| Vinyl chloride | MR | 6 | 2008 |
| Combined Uranium | MR | 6 | 2004 |
| Combined Radium (-226 and -228) | MR | 6 | 2004 |
| Radium-226 | MR | 6 | 2004 |
| Gross Alpha, Excl. Radon and U | MR | 6 | 2004 |
| Radium-228 | MR | 6 | 2004 |
| Toxaphene | MR | 6 | 2006 |
| 2,4-D | MR | 6 | 2023 |
| 1,2,4-Trichlorobenzene | MR | 5 | 2008 |
| cis-1,2-Dichloroethylene | MR | 5 | 2008 |
| Xylenes, Total | MR | 5 | 2008 |
| DICHLOROMETHANE | MR | 5 | 2008 |
| o-Dichlorobenzene | MR | 5 | 2008 |
| p-Dichlorobenzene | MR | 5 | 2008 |
PFAS Testing Results (UCMR5)
Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 8 of 240 samples detected PFAS.
| Contaminant | Date | Result | MRL | Status |
|---|---|---|---|---|
| PFHxA | 8/1/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| 11Cl-PF3OUdS | 8/1/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| 9Cl-PF3ONS | 8/1/2024 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| ADONA | 8/1/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| HFPO-DA | 8/1/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFBA | 8/1/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| 6:2 FTS | 8/1/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| 8:2 FTS | 8/1/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFDA | 8/1/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFDoA | 8/1/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFMPA | 8/1/2024 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFPeA | 8/1/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFMBA | 8/1/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFEESA | 8/1/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| lithium | 8/1/2024 | 65.5000 µg/L | 9 µg/L | Detected |
| NFDHA | 8/1/2024 | <0.02 µg/L | 0.02 µg/L | Not Detected |
| 4:2 FTS | 8/1/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFOS | 8/1/2024 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFTrDA | 8/1/2024 | <0.007 µg/L | 0.007 µg/L | Not Detected |
| PFNA | 8/1/2024 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFTA | 8/1/2024 | <0.008 µg/L | 0.008 µg/L | Not Detected |
| PFHxS | 8/1/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFHpA | 8/1/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFBS | 8/1/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFPeS | 8/1/2024 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFUnA | 8/1/2024 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| NEtFOSAA | 8/1/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFHpS | 8/1/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFOA | 8/1/2024 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| NMeFOSAA | 8/1/2024 | <0.006 µg/L | 0.006 µg/L | Not Detected |
| PFTA | 8/1/2024 | <0.008 µg/L | 0.008 µg/L | Not Detected |
| PFMBA | 8/1/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| NEtFOSAA | 8/1/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFTrDA | 8/1/2024 | <0.007 µg/L | 0.007 µg/L | Not Detected |
| PFDA | 8/1/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| NMeFOSAA | 8/1/2024 | <0.006 µg/L | 0.006 µg/L | Not Detected |
| lithium | 8/1/2024 | 42.5000 µg/L | 9 µg/L | Detected |
| PFBS | 8/1/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFHpA | 8/1/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFHxS | 8/1/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFNA | 8/1/2024 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFOS | 8/1/2024 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFOA | 8/1/2024 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| 6:2 FTS | 8/1/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFHpS | 8/1/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFPeS | 8/1/2024 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| NFDHA | 8/1/2024 | <0.02 µg/L | 0.02 µg/L | Not Detected |
| PFEESA | 8/1/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFPeA | 8/1/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFMPA | 8/1/2024 | <0.004 µg/L | 0.004 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.