County · Iowa
Iowa County, Iowa: drinking water records
This overview covers 12 ZIP codes and 11 community water systems in Iowa County. It also stands in for 2 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 |
|---|---|---|---|---|---|
| Amana Society Water System North IA4848001 | 1,248 | 0 | 0 | 1 | 0 ppb |
| Waldenburg Community Water System IA4802301 | 90 | 0 | 0 | 1 | 2 ppb |
| Iowa Valley Estates IA4800634 | 46 | 0 | 0 | 9 | 8 ppb |
| Williamsburg Public Water Supply IA4884023 | 3,345 | 0 | 0 | 0 | 3 ppb |
| Poweshiek Water Association (Iac) IA4868701 | 2,490 | 0 | 0 | 0 | 0.9 ppb |
| Marengo Water Supply IA4843033 | 2,435 | 0 | 0 | 0 | 1.2 ppb |
| North English Water Department IA4858070 | 1,065 | 0 | 0 | 0 | 0 ppb |
| Victor Municipal Water Dept IA4875050 | 875 | 0 | 0 | 0 | 18.2 ppb |
| South Amana Water Supply IA4868034 | 300 | 0 | 0 | 0 | 2 ppb |
| Ladora Water Supply IA4840042 | 229 | 0 | 0 | 0 | 0 ppb |
| Millersburg Water Dept IA4852082 | 135 | 0 | 0 | 0 | 0 ppb |
ZIP reports in Iowa County
No ZIP report in this county is published yet.
These ZIP codes are covered by this overview because their utility has too little EPA data for a separate page: 52220, 52325.
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.