County · Iowa
Harrison County, Iowa: drinking water records
This overview covers 10 ZIP codes and 11 community water systems in Harrison 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 |
|---|---|---|---|---|---|
| Valley View Water Association IA4300601 | 65 | 0 | 0 | 1 | 3.8 ppb |
| Missouri Valley Water Supply IA4344088 | 2,678 | 0 | 0 | 0 | 2.9 ppb |
| Woodbine Water Department IA4388034 | 1,625 | 0 | 0 | 0 | 4 ppb |
| Logan Water Supply IA4337092 | 1,397 | 0 | 0 | 0 | 2 ppb |
| Dunlap Water Supply IA4316087 | 1,035 | 0 | 0 | 0 | 3 ppb |
| Mondamin Water Supply IA4349094 | 339 | 0 | 0 | 0 | 2.6 ppb |
| Modale Water Supply IA4347093 | 280 | 0 | 0 | 0 | 3 ppb |
| Pisgah Water Supply IA4364044 | 245 | 0 | 0 | 0 | 3.2 ppb |
| Sunnyside Village MHP LLC IA4300600 | 190 | 0 | 0 | 0 | 0 ppb |
| Magnolia, City of IA4341017 | 188 | 0 | 0 | 0 | 0 ppb |
| Little Sioux Water Department IA4333089 | 150 | 0 | 0 | 0 | 3 ppb |
ZIP reports in Harrison 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.