SEATTLE PUBLIC UTILITIES
PWSID: WA5377050 · Seattle, WA · Serving 1,091,904 people
Type: CWSOwner: LSource: SW
Compliant
All PFAS compounds below EPA Maximum Contaminant Levels.
Key contaminants vs MCL
EPA MCL: 4 ppt (parts per trillion) for PFOA and PFOS individually. Compliance deadline: 2031-12-31
Exact contamination levels
Upgrade to Pro to see PFOA/PFOS ppt values and MCL comparison charts.
Upgrade to ProDetection summary
N/A ppt
Highest single detection
2023-09-18
Latest sample date
All PFAS detection results
Source: EPA UCMR5 (UCMR5) · 232 compounds tested
| Contaminant | Result (ppt) | MCL (ppt) | Status | Sample date |
|---|
| PFEESA | ND | — | Below MRL | 2023-07-18 |
| 11Cl-PF3OUdS | ND | — | Below MRL | 2023-07-18 |
| NMeFOSAA | ND | — | Below MRL | 2023-07-18 |
| NEtFOSAA | ND | — | Below MRL | 2023-07-18 |
| PFTrDA | ND | — | Below MRL | 2023-07-18 |