County · Iowa
Shelby County, Iowa: drinking water records
This overview covers 10 ZIP codes and 9 community water systems in Shelby 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 |
|---|---|---|---|---|---|
| Regional Water IA8300184 | 4,132 | 60 | 0 | 1 | 2 ppb |
| Harlan Municipal Utilities IA8335029 | 5,067 | 60 | 0 | 0 | 1 ppb |
| Portsmouth Water Supply IA8365052 | 189 | 60 | 0 | 0 | 0 ppb |
| Shelby Water Supply IA8369038 | 727 | 0 | 0 | 0 | 0 ppb |
| Elk Horn Muni Water Works IA8325013 | 631 | 0 | 0 | 0 | 1 ppb |
| Earling Water Supply IA8320098 | 397 | 0 | 0 | 0 | 0 ppb |
| Irwin Municipal Supply IA8340099 | 313 | 0 | 0 | 0 | 0 ppb |
| Defiance Water Department IA8315018 | 250 | 0 | 0 | 0 | 1.8 ppb |
| Panama Water Works IA8355025 | 235 | 0 | 0 | 0 | 0 ppb |
ZIP reports in Shelby 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.