ST JOHN'S WATER (SC1020002)
PWSID: SC1020002 · JOHNS ISLAND, SC · Serving 22,592 people
Type: CWSOwner: PSource: SW
Settlement eligible
Settlement details
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Upgrade to ProExceeds MCL
One or more PFAS compounds exceed EPA Maximum Contaminant Levels. Corrective action required by 2031.
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
8.5 ppt
Highest single detection
2025-07-24
Latest sample date
complete
Data completeness
All PFAS detection results
Source: EPA UCMR5 (UCMR5) · 116 compounds tested
| Contaminant | Result (ppt) | MCL (ppt) | Status | Sample date |
|---|
| PFDoA | ND | — | Below MRL | 2025-10-01 |
| PFTA | ND | — | Below MRL | 2025-10-01 |
| PFEESA | ND | — | Below MRL | 2025-10-01 |
| PFPeS | ND | — | Below MRL | 2025-10-01 |
| NFDHA | ND | — | Below MRL | 2025-10-01 |