County · Iowa
Butler County, Iowa: drinking water records
This overview covers 11 ZIP codes and 10 community water systems in Butler 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 |
|---|---|---|---|---|---|
| Ia Regional Utilities Assoc (Waverly) IA0990701 | 37,820 | 180 | 0 | 0 | 1.5 ppb |
| Clarksville Water Supply IA1228038 | 1,254 | 60 | 0 | 0 | 2.2 ppb |
| Aplington Water Supply IA1207061 | 1,126 | 0 | 0 | 1 | 3.4 ppb |
| Bristow Muni Water Supply IA1222044 | 145 | 0 | 0 | 7 | 1.2 ppb |
| Parkersburg Water Supply IA1281028 | 2,019 | 0 | 0 | 0 | 14.6 ppb |
| Shell Rock Muni Water Supp IA1286042 | 1,269 | 0 | 0 | 0 | 4.6 ppb |
| Greene Muni Water Supply IA1253006 | 994 | 0 | 0 | 0 | 5.5 ppb |
| Allison Water Supply IA1203026 | 966 | 0 | 0 | 0 | 7.6 ppb |
| Dumont Water Supply IA1240081 | 635 | 0 | 0 | 0 | 3 ppb |
| New Hartford Water Supply IA1271058 | 570 | 0 | 0 | 0 | 0.7 ppb |
ZIP reports in Butler 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.