ST. HELENA, CITY OF
PWSID: CA2810004 · ST. HELENA, CA · Serving 5,386 people
Type: CWSOwner: LSource: SW
Settlement eligible
Settlement details
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Upgrade to ProCompliant
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
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Upgrade to ProDetection summary
75 ppt
Highest single detection
2023-07-12
Latest sample date
All PFAS detection results
Source: EPA UCMR5 (UCMR5) · 290 compounds tested
| Contaminant | Result (ppt) | MCL (ppt) | Status | Sample date |
|---|
| PFHpS | ND | — | Below MRL | 2023-01-23 |
| 6:2 FTS | ND | — | Below MRL | 2023-01-23 |
| PFDoA | ND | — | Below MRL | 2023-01-23 |
| 4:2 FTS | ND | — | Below MRL | 2023-01-23 |
| 8:2 FTS | ND | — | Below MRL | 2023-01-23 |