ORCHARD DALE WATER DISTRICT
PWS ID: CA1910101 · WHITTIER, California 90604
PFAS Detected
7 PFAS "forever chemicals" detected in testing under EPA's UCMR5 monitoring program.
Population Served
25,000
Total Violations
10
Health-Based Violations
8
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 4,346
- County
- Los Angeles
- School/Daycare
- No
- MCL Violations
- 8
- Monitoring Violations
- 2
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MCL | 8 | 2008 |
| Lead and Copper Rule | MR | 2 | 2020 |
PFAS Testing Results (UCMR5)
Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 14 of 60 samples detected PFAS.
| Contaminant | Date | Result | MRL | Status |
|---|---|---|---|---|
| ADONA | 4/1/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| NEtFOSAA | 4/1/2025 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFTA | 4/1/2025 | <0.008 µg/L | 0.008 µg/L | Not Detected |
| PFHpS | 4/1/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFPeS | 4/1/2025 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| NFDHA | 4/1/2025 | <0.02 µg/L | 0.02 µg/L | Not Detected |
| PFEESA | 4/1/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFMBA | 4/1/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFPeA | 4/1/2025 | 0.0100 µg/L | 0.003 µg/L | Detected |
| PFMPA | 4/1/2025 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| 8:2 FTS | 4/1/2025 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| 4:2 FTS | 4/1/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| 6:2 FTS | 4/1/2025 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| lithium | 4/1/2025 | <9 µg/L | 9 µg/L | Not Detected |
| HFPO-DA | 4/1/2025 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| NMeFOSAA | 4/1/2025 | <0.006 µg/L | 0.006 µg/L | Not Detected |
| 9Cl-PF3ONS | 4/1/2025 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| 11Cl-PF3OUdS | 4/1/2025 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFUnA | 4/1/2025 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| PFHxA | 4/1/2025 | 0.0072 µg/L | 0.003 µg/L | Detected |
| PFDoA | 4/1/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFDA | 4/1/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFOA | 4/1/2025 | 0.0099 µg/L | 0.004 µg/L | Detected |
| PFOS | 4/1/2025 | 0.0170 µg/L | 0.004 µg/L | Detected |
| PFNA | 4/1/2025 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFHxS | 4/1/2025 | 0.0040 µg/L | 0.003 µg/L | Detected |
| PFHpA | 4/1/2025 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFBS | 4/1/2025 | 0.0072 µg/L | 0.003 µg/L | Detected |
| PFBA | 4/1/2025 | 0.0088 µg/L | 0.005 µg/L | Detected |
| PFTrDA | 4/1/2025 | <0.007 µg/L | 0.007 µg/L | Not Detected |
| ADONA | 10/30/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFHpS | 10/30/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFPeS | 10/30/2024 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| NFDHA | 10/30/2024 | <0.02 µg/L | 0.02 µg/L | Not Detected |
| PFEESA | 10/30/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFMBA | 10/30/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFPeA | 10/30/2024 | 0.0085 µg/L | 0.003 µg/L | Detected |
| PFMPA | 10/30/2024 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| 8:2 FTS | 10/30/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| 4:2 FTS | 10/30/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| 6:2 FTS | 10/30/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFBS | 10/30/2024 | 0.0065 µg/L | 0.003 µg/L | Detected |
| PFHpA | 10/30/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| HFPO-DA | 10/30/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| 9Cl-PF3ONS | 10/30/2024 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| 11Cl-PF3OUdS | 10/30/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFUnA | 10/30/2024 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| PFHxA | 10/30/2024 | 0.0066 µg/L | 0.003 µg/L | Detected |
| PFDoA | 10/30/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFDA | 10/30/2024 | <0.003 µg/L | 0.003 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.