GW SANTA CRUZ WATER CO
PWS ID: AZ0411131 · MARICOPA, Arizona 85138
PFAS Detected
1 PFAS "forever chemicals" detected in testing under EPA's UCMR5 monitoring program.
Population Served
84,000
Total Violations
256
Health-Based Violations
16
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Private
- Connections
- 17,123
- County
- Pinal
- School/Daycare
- No
- MCL Violations
- 16
- Monitoring Violations
- 205
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Consumer Confidence Rule | Other | 10 | 2016 |
| Gross Alpha, Excl. Radon and U | MR | 10 | 2023 |
| Chlorine | MR | 8 | 2019 |
| Combined Uranium | MCL | 8 | 2011 |
| Public Notice | Other | 8 | 2025 |
| Radium-228 | MR | 6 | 2023 |
| Combined Radium (-226 and -228) | MR | 6 | 2023 |
| Radium-226 | MR | 6 | 2023 |
| Arsenic | MR | 6 | 2021 |
| TTHM | MR | 5 | 2024 |
| Total Haloacetic Acids (HAA5) | MR | 5 | 2024 |
| Coliform (TCR) | MCL | 5 | 2015 |
| Barium | MR | 5 | 2021 |
| Cadmium | MR | 5 | 2021 |
| CYANIDE | MR | 5 | 2021 |
| Antimony, Total | MR | 5 | 2021 |
| Beryllium, Total | MR | 5 | 2021 |
| Thallium, Total | MR | 5 | 2021 |
| Selenium | MR | 5 | 2021 |
| Chromium | MR | 5 | 2021 |
| Mercury | MR | 5 | 2021 |
| Nickel | MR | 5 | 2021 |
| Fluoride | MR | 5 | 2021 |
| Combined Uranium | MR | 4 | 2023 |
| Coliform (TCR) | MR | 3 | 2006 |
| Revised Total Coliform Rule | MON | 3 | 2023 |
| Toxaphene | MR | 3 | 2021 |
| Diquat | MR | 3 | 2021 |
| Endothall | MR | 3 | 2021 |
| Di(2-ethylhexyl) adipate | MR | 3 | 2021 |
PFAS Testing Results (UCMR5)
Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 4 of 120 samples detected PFAS.
| Contaminant | Date | Result | MRL | Status |
|---|---|---|---|---|
| PFHpS | 5/9/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFPeS | 5/9/2024 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| 6:2 FTS | 5/9/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| 4:2 FTS | 5/9/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| 8:2 FTS | 5/9/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFMPA | 5/9/2024 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFPeA | 5/9/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFMBA | 5/9/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| lithium | 5/9/2024 | 122.0000 µg/L | 9 µg/L | Detected |
| NMeFOSAA | 5/9/2024 | <0.006 µg/L | 0.006 µg/L | Not Detected |
| NEtFOSAA | 5/9/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFTA | 5/9/2024 | <0.008 µg/L | 0.008 µg/L | Not Detected |
| NFDHA | 5/9/2024 | <0.02 µg/L | 0.02 µg/L | Not Detected |
| PFOA | 5/9/2024 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFTrDA | 5/9/2024 | <0.007 µg/L | 0.007 µg/L | Not Detected |
| PFHxA | 5/9/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFEESA | 5/9/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFNA | 5/9/2024 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFBS | 5/9/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFHxS | 5/9/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFDoA | 5/9/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFDA | 5/9/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFOS | 5/9/2024 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFUnA | 5/9/2024 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| 11Cl-PF3OUdS | 5/9/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| 9Cl-PF3ONS | 5/9/2024 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| ADONA | 5/9/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| HFPO-DA | 5/9/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFBA | 5/9/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFHpA | 5/9/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| NMeFOSAA | 5/9/2024 | <0.006 µg/L | 0.006 µg/L | Not Detected |
| 8:2 FTS | 5/9/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFMPA | 5/9/2024 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFPeA | 5/9/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFMBA | 5/9/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFEESA | 5/9/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| NFDHA | 5/9/2024 | <0.02 µg/L | 0.02 µg/L | Not Detected |
| PFPeS | 5/9/2024 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFHpS | 5/9/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFTA | 5/9/2024 | <0.008 µg/L | 0.008 µg/L | Not Detected |
| lithium | 5/9/2024 | 236.0000 µg/L | 9 µg/L | Detected |
| NEtFOSAA | 5/9/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| 4:2 FTS | 5/9/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| HFPO-DA | 5/9/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFTrDA | 5/9/2024 | <0.007 µg/L | 0.007 µg/L | Not Detected |
| PFOA | 5/9/2024 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFBS | 5/9/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| 6:2 FTS | 5/9/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFHxS | 5/9/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFOS | 5/9/2024 | <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.