TEMPE CITY OF
PWS ID: AZ0407100 · TEMPE, Arizona 85280
PFAS Detected
10 PFAS "forever chemicals" detected in testing under EPA's UCMR5 monitoring program.
Population Served
165,000
Total Violations
339
Health-Based Violations
6
Water Source
Surface Water
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 40,000
- County
- Maricopa
- School/Daycare
- No
- MCL Violations
- 4
- Monitoring Violations
- 327
- Treatment Tech Violations
- 2
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| CYANIDE | MR | 36 | 2018 |
| Nitrate | MR | 31 | 2007 |
| Coliform (TCR) | MR | 12 | 2010 |
| Arsenic | MR | 11 | 2010 |
| Thallium, Total | MR | 10 | 2005 |
| Chlorine | MR | 10 | 2016 |
| Selenium | MR | 9 | 2005 |
| Mercury | MR | 9 | 2005 |
| Chromium | MR | 9 | 2005 |
| Cadmium | MR | 9 | 2005 |
| Barium | MR | 9 | 2005 |
| Interim Enhanced Surface Water Treatment Rule | MR | 8 | 2004 |
| Pentachlorophenol | MR | 6 | 2002 |
| DICHLOROMETHANE | MR | 6 | 2006 |
| Beryllium, Total | MR | 6 | 2005 |
| Antimony, Total | MR | 6 | 2005 |
| Nickel | MR | 6 | 2005 |
| Di(2-ethylhexyl) phthalate | MR | 6 | 2018 |
| Trichloroethylene | MR | 6 | 2006 |
| Tetrachloroethylene | MR | 6 | 2006 |
| p-Dichlorobenzene | MR | 4 | 2006 |
| Asbestos | MR | 4 | 2002 |
| TTHM | MCL | 4 | 2017 |
| Fluoride | MR | 4 | 2005 |
| 2,4-D | MR | 3 | 2002 |
| 2,4,5-TP | MR | 3 | 2002 |
| 1,2,4-Trichlorobenzene | MR | 3 | 2006 |
| Xylenes, Total | MR | 3 | 2006 |
| BHC-GAMMA | MR | 3 | 2002 |
| Endrin | MR | 3 | 2002 |
PFAS Testing Results (UCMR5)
Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 87 of 720 samples detected PFAS.
| Contaminant | Date | Result | MRL | Status |
|---|---|---|---|---|
| PFHpA | 8/7/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFHxS | 8/7/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFNA | 8/7/2023 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFOS | 8/7/2023 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFOA | 8/7/2023 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFBS | 8/7/2023 | 0.0100 µg/L | 0.003 µg/L | Detected |
| PFDA | 8/7/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFHxA | 8/7/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFDoA | 8/7/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFHpS | 8/7/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFPeA | 8/7/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| ADONA | 8/7/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFPeS | 8/7/2023 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| NFDHA | 8/7/2023 | <0.02 µg/L | 0.02 µg/L | Not Detected |
| PFEESA | 8/7/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFMBA | 8/7/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFUnA | 8/7/2023 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| PFBA | 8/7/2023 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| 9Cl-PF3ONS | 8/7/2023 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| PFMPA | 8/7/2023 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| HFPO-DA | 8/7/2023 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| 6:2 FTS | 8/7/2023 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| 4:2 FTS | 8/7/2023 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| 8:2 FTS | 8/7/2023 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| 11Cl-PF3OUdS | 8/7/2023 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| NMeFOSAA | 7/9/2024 | <0.006 µg/L | 0.006 µg/L | Not Detected |
| PFNA | 7/9/2024 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFOS | 7/9/2024 | 0.0545 µg/L | 0.004 µg/L | Detected |
| PFOA | 7/9/2024 | 0.0372 µg/L | 0.004 µg/L | Detected |
| lithium | 7/9/2024 | 195.0000 µg/L | 9 µg/L | Detected |
| PFDA | 7/9/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFDoA | 7/9/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFHxA | 7/9/2024 | 0.0225 µg/L | 0.003 µg/L | Detected |
| PFUnA | 7/9/2024 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| PFHxS | 7/9/2024 | 0.0705 µg/L | 0.003 µg/L | Detected |
| 9Cl-PF3ONS | 7/9/2024 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| NFDHA | 7/9/2024 | <0.02 µg/L | 0.02 µg/L | Not Detected |
| HFPO-DA | 7/9/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| 11Cl-PF3OUdS | 7/9/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFEESA | 7/9/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| ADONA | 7/9/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFBA | 7/9/2024 | 0.0098 µg/L | 0.005 µg/L | Detected |
| 6:2 FTS | 7/9/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| 4:2 FTS | 7/9/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| 8:2 FTS | 7/9/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFMPA | 7/9/2024 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFHpS | 7/9/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFMBA | 7/9/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFHpA | 7/9/2024 | 0.0070 µg/L | 0.003 µg/L | Detected |
| PFPeS | 7/9/2024 | 0.0080 µg/L | 0.004 µg/L | 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.