County · Iowa
Warren County, Iowa: drinking water records
This overview covers 12 ZIP codes and 14 community water systems in Warren 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 |
|---|---|---|---|---|---|
| Warren Water District IA9133701 | 20,095 | 120 | 0 | 0 | 0 ppb |
| Indianola Water Supply IA9133075 | 15,833 | 60 | 0 | 0 | 0 ppb |
| Norwalk Water Supply IA9164078 | 14,334 | 120 | 0 | 0 | 0 ppb |
| Carlisle Water Supply IA9113071 | 4,170 | 60 | 1 | 0 | 1.5 ppb |
| Milo Public Water Supply IA9155083 | 788 | 0 | 0 | 0 | 0 ppb |
| New Virginia Water Supply IA9159067 | 498 | 0 | 0 | 0 | 1.8 ppb |
| Martensdale Water Supply IA9147047 | 421 | 0 | 0 | 0 | 0 ppb |
| Lacona Water Supply IA9138041 | 361 | 0 | 0 | 0 | 2 ppb |
| North American Mobile Home Park IA9133601 | 235 | 0 | 0 | 0 | 0.2 ppb |
| Wilshire Hills MHC IA9164601 | 216 | 0 | 0 | 0 | 0 ppb |
| Hartford MHC LLC IA9128301 | 183 | 0 | 0 | 0 | 0 ppb |
| Saint Marys Water Corporation IA9176019 | 121 | 0 | 0 | 0 | 0 ppb |
| Indian Ridge Mobile Home Community IA9133602 | 153 | 0 | 0 | 0 | not reported |
| Sunfield Mobile Home Community IA9133603 | 80 | 0 | 0 | 0 | not reported |
ZIP reports in Warren 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.