LYON-SIOUX RWS-BIG SIOUX
PWSID: IA6000755 · ROCK RAPIDS, IA · Serving 1,530 people
Type: CWSOwner: PSource: GW
Settlement eligible
Settlement details
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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
77 ppt
Highest single detection
2025-04-14
Latest sample date
All PFAS detection results
Source: EPA UCMR5 (UCMR5) · 174 compounds tested
| Contaminant | Result (ppt) | MCL (ppt) | Status | Sample date |
|---|
| PFHxS | ND | 10 | Below MRL | 2025-04-14 |
| PFDA | ND | — | Below MRL | 2025-04-14 |
| PFOA | ND | 4 | Below MRL | 2025-04-14 |
| PFOS | ND | 4 | Below MRL | 2025-04-14 |
| PFNA | ND | 10 | Below MRL | 2025-04-14 |