County · Indiana
Dearborn County, Indiana: drinking water records
This overview covers 7 ZIP codes and 9 community water systems in Dearborn 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 |
|---|---|---|---|---|---|
| Lawrenceburg Municipal Utilities IN5215006 | 5,000 | 60 | 0 | 1 | 1.6 ppb |
| Tri-Township Water Corporation IN5215009 | 10,435 | 120 | 0 | 0 | 3.2 ppb |
| Aurora Utilities IN5215001 | 6,415 | 60 | 0 | 0 | 2.3 ppb |
| North Dearborn Water Authority IN5215008 | 5,775 | 300 | 0 | 0 | 2.1 ppb |
| Valley Rural Utility Company IN5215004 | 5,529 | 60 | 0 | 0 | 2.6 ppb |
| L-M-S Conservancy District IN5215007 | 5,375 | 60 | 0 | 0 | 1.8 ppb |
| City of Greendale Utilities IN5215003 | 5,092 | 60 | 0 | 0 | 1.3 ppb |
| Hogan Water Corporation IN5215005 | 1,238 | 0 | 0 | 1 | 0 ppb |
| Dillsboro Water Works IN5215002 | 2,000 | 0 | 0 | 0 | 4.4 ppb |
ZIP reports in Dearborn 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.