County · Iowa
Plymouth County, Iowa: drinking water records
This overview covers 11 ZIP codes and 10 community water systems in Plymouth County. It also stands in for 0 ZIP codes whose utility has too little EPA data for a page of its own.
System population figures are summed from EPA registry records and can overlap where wholesalers and retail systems serve the same people. They are not a Census county-population estimate.
Water systems with the most complete records
| Water system | People served | PFAS survey results | PFAS found | Health-based violations | Lead, 9 in 10 homes at or below |
|---|---|---|---|---|---|
| Lemars Water Department IA7540174 | 10,606 | 60 | 0 | 0 | 2.2 ppb |
| Remsen Municipal Utilities IA7568079 | 1,678 | 0 | 0 | 0 | 0 ppb |
| Akron, City of IA7509008 | 1,558 | 0 | 0 | 0 | 3.6 ppb |
| Kingsley Water Supply IA7537032 | 1,396 | 0 | 0 | 0 | 1.1 ppb |
| Hinton Water Supply IA7528051 | 935 | 0 | 0 | 0 | 3.3 ppb |
| Merrill Municipal Water Supply IA7548072 | 717 | 0 | 0 | 0 | 3.7 ppb |
| Brunsville Municipal Water Supply IA7514049 | 129 | 0 | 0 | 0 | 8 ppb |
| Westfield Water Supply IA7589008 | 123 | 0 | 0 | 0 | 1.2 ppb |
| Oyens Water Supply IA7561021 | 92 | 0 | 0 | 0 | 1.3 ppb |
| Craig Water Works IA7521084 | 79 | 0 | 0 | 0 | 5.2 ppb |
ZIP reports in Plymouth County
No ZIP report in this county is published yet.
Sources and scope
EPA UCMR 5 occurrence data, samples collected 2023-01-03 – 2026-06-17, final release, August 2026 (file dated Aug 28, 2026); EPA SDWIS via ECHO, 2026Q2 extract (file dated Jul 9, 2026); EPA service-area boundaries v3.0; Census 2020 ZCTAs. Page generated 2026-09-03.
Counts cover the systems that report this county to EPA. A water system may cross county lines. "Found" means at least one result at or above the laboratory reporting level; it is not a compliance finding.