County · Iowa
Benton County, Iowa: drinking water records
This overview covers 16 ZIP codes and 17 community water systems in Benton 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 |
|---|---|---|---|---|---|
| Vinton Municipal Water Dept IA0688053 | 4,938 | 60 | 0 | 0 | 0 ppb |
| Belle Plaine Water Dept IA0610099 | 2,380 | 60 | 0 | 0 | 9.8 ppb |
| Atkins Municipal Water Works IA0603072 | 2,056 | 0 | 0 | 3 | 2 ppb |
| Blairstown Water Supply IA0607013 | 738 | 0 | 0 | 1 | 0 ppb |
| Keystone Water Supply IA0640030 | 599 | 0 | 0 | 4 | 5.9 ppb |
| Poweshiek Water Association (Cr) IA5715702 | 2,000 | 0 | 0 | 0 | 0.6 ppb |
| Urbana Water Supply IA0680041 | 1,554 | 0 | 0 | 0 | 0 ppb |
| Shellsburg Water Supply IA0670043 | 961 | 0 | 0 | 0 | 3.1 ppb |
| Newhall Water Supply IA0653050 | 881 | 0 | 0 | 0 | 2.1 ppb |
| Van Horne Water Works IA0685045 | 779 | 0 | 0 | 0 | 0 ppb |
| Norway City Water Supply IA0656081 | 466 | 0 | 0 | 0 | 0 ppb |
| Clover Ridge Subdivision IA0690301 | 413 | 0 | 0 | 0 | 0 ppb |
| Garrison Water Supply IA0625078 | 344 | 0 | 0 | 0 | 1 ppb |
| Timber Ridge IA0600600 | 225 | 0 | 0 | 0 | 0 ppb |
| Mount Auburn Water Supply IA0650001 | 162 | 0 | 0 | 0 | 1.4 ppb |
| Walnut Street Well IA0690305 | 45 | 0 | 0 | 0 | 0 ppb |
| Terry Water Association IA0690304 | 25 | 0 | 0 | 0 | 2 ppb |
ZIP reports in Benton 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.