County · Indiana
Jefferson County, Indiana: drinking water records
This overview covers 6 ZIP codes and 7 community water systems in Jefferson 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 |
|---|---|---|---|---|---|
| Madison Water Department IN5239006 | 15,323 | 180 | 2 | 0 | 1.8 ppb |
| Kent Water Company IN5239004 | 6,750 | 60 | 0 | 0 | 1.9 ppb |
| Canaan Utilities IN5239001 | 4,428 | 180 | 1 | 0 | 2.2 ppb |
| Hanover Water Department IN5239003 | 2,597 | 60 | 3 | 0 | 2.7 ppb |
| Rykers Ridge Water Company IN5239007 | 2,050 | 0 | 0 | 0 | 2.3 ppb |
| Madison State Hospital IN5239005 | 1,375 | 0 | 0 | 0 | 1.9 ppb |
| Hanover College IN5239010 | 1,250 | 0 | 0 | 0 | 4.6 ppb |
ZIP reports in Jefferson 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.