County · Iowa
Grundy County, Iowa: drinking water records
This overview covers 9 ZIP codes and 9 community water systems in Grundy 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 |
| Grundy Center Water Supply IA3833013 | 2,796 | 0 | 0 | 0 | 1.8 ppb |
| Reinbeck Water Supply IA3870073 | 1,662 | 0 | 0 | 0 | 14.8 ppb |
| Dike Water Supply IA3815042 | 1,306 | 0 | 0 | 0 | 1.1 ppb |
| Conrad Water Supply IA3809067 | 1,098 | 0 | 0 | 0 | 4.5 ppb |
| Wellsburg Water Supply IA3890097 | 721 | 0 | 0 | 0 | 3.3 ppb |
| Holland Water Supply IA3839052 | 270 | 0 | 0 | 0 | 1.7 ppb |
| Stout Water Supply IA3880001 | 191 | 0 | 0 | 0 | 4 ppb |
| Beaman Water Supply IA3803094 | 161 | 0 | 0 | 0 | 0 ppb |
ZIP reports in Grundy 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.