County · Iowa
Jones County, Iowa: drinking water records
This overview covers 11 ZIP codes and 11 community water systems in Jones County. It also stands in for 1 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 |
|---|---|---|---|---|---|
| Anamosa Municipal Water Supply IA5307048 | 4,457 | 60 | 0 | 0 | 1 ppb |
| Monticello Water Supply IA5343098 | 4,040 | 180 | 0 | 0 | 3 ppb |
| Anamosa State Penitentiary IA5300947 | 1,230 | 0 | 0 | 0 | 0 ppb |
| Olin Water Supply IA5355094 | 651 | 0 | 0 | 0 | 3.1 ppb |
| Wyoming Water System IA5396039 | 523 | 0 | 0 | 0 | 2.4 ppb |
| Oxford Junction Water Supply IA5361020 | 424 | 0 | 0 | 0 | 0.9 ppb |
| Martelle Water Works IA5337046 | 249 | 0 | 0 | 0 | 0 ppb |
| Onslow Water Supply IA5358096 | 201 | 0 | 0 | 0 | 0.6 ppb |
| Center Junction (Eiruss) IA5315005 | 100 | 0 | 0 | 0 | 0 ppb |
| Morley Municipal Water Supply IA5349001 | 98 | 0 | 0 | 0 | 0 ppb |
| Bacon Addition IA5343301 | 81 | 0 | 0 | 0 | 2 ppb |
ZIP reports in Jones County
No ZIP report in this county is published yet.
These ZIP codes are covered by this overview because their utility has too little EPA data for a separate page: 52252.
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.