WALLA WALLA WATER DIVISION
PWSID: WA5392500 · Walla Walla, WA · Serving 42,959 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
2024-07-25
Latest sample date
All PFAS detection results
Source: EPA UCMR5 (UCMR5) · 116 compounds tested
| Contaminant | Result (ppt) | MCL (ppt) | Status | Sample date |
|---|
| PFHpS | ND | — | Below MRL | 2024-01-22 |
| 6:2 FTS | ND | — | Below MRL | 2024-01-22 |
| PFPeS | ND | — | Below MRL | 2024-01-22 |
| PFEESA | ND | — | Below MRL | 2024-01-22 |
| NEtFOSAA | ND | — | Below MRL | 2024-01-22 |
Violation history(20 violations, 20 open)
Monitoring & Reporting - PFNA(PFNA)
2023-10-01 · Open · Tier 3
Monitoring & Reporting - PFBS(PFBS)
2023-10-01 · Open · Tier 3
Monitoring & Reporting - PFOA(PFOA)
2023-07-01 · Open · Tier 3
Monitoring & Reporting - PFHxS(PFHxS)
2023-07-01 · Open · Tier 3
Monitoring & Reporting - HFPO-DA (GenX)(HFPO-DA (GenX))
2023-07-01 · Open · Tier 3
Monitoring & Reporting - PFNA(PFNA)
2023-07-01 · Open · Tier 3
Violation details
Upgrade to Pro to view full violation history, enforcement actions, and resolution status.
Upgrade to Pro