County · Iowa
Howard County, Iowa: drinking water records
This overview covers 6 ZIP codes and 6 community water systems in Howard 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 |
|---|---|---|---|---|---|
| Cresco Waterworks IA4515087 | 3,913 | 120 | 0 | 0 | 1 ppb |
| Riceville Water Supply IA4558001 | 816 | 0 | 0 | 0 | 0 ppb |
| Elma Water Supply IA4525017 | 505 | 0 | 0 | 0 | 5.1 ppb |
| Lime Springs Water Supply IA4535081 | 473 | 0 | 0 | 0 | 3 ppb |
| Protivin Water Supply IA4552063 | 269 | 0 | 0 | 0 | 14.2 ppb |
| Chester Water Supply IA4509024 | 139 | 0 | 0 | 0 | 2 ppb |
ZIP reports in Howard 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.