County · Ohio
Warren County, Ohio: drinking water records
This overview covers 12 ZIP codes and 16 community water systems in Warren 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 |
|---|---|---|---|---|---|
| Waynesville Village PWS OH8302012 | 4,100 | 60 | 0 | 1 | 1.6 ppb |
| Warren County OH8301512 | 81,975 | 60 | 0 | 0 | 1.3 ppb |
| Western Water Company OH8300512 | 39,508 | 180 | 1 | 0 | 1.3 ppb |
| Lebanon City OH8304112 | 20,700 | 120 | 1 | 0 | 1.2 ppb |
| Springboro PWS OH8301412 | 19,263 | 60 | 4 | 0 | 4.4 ppb |
| Warren Co. Socialville PWS OH8304203 | 13,216 | 120 | 1 | 0 | 0.9 ppb |
| Franklin Public Water System OH8300412 | 11,690 | 60 | 1 | 0 | 2.1 ppb |
| South Lebanon City PWS OH8301312 | 3,891 | 120 | 0 | 0 | 1 ppb |
| Lebanon Correctional Institution OH8301012 | 3,410 | 60 | 0 | 0 | 4.4 ppb |
| Morrow Village PWS OH8300912 | 3,360 | 0 | 0 | 1 | 1.9 ppb |
| Otterbein-Lebanon Retreat Center OH8301112 | 1,541 | 0 | 0 | 1 | 2 ppb |
| Carlisle City PWS OH8303803 | 1,675 | 0 | 0 | 0 | 1.8 ppb |
| Warren Co. Pennyroyal Area PWS OH8301803 | 950 | 0 | 0 | 0 | 0.7 ppb |
| South Lebanon PWS No 2 OH8361413 | 180 | 0 | 0 | 0 | 0.5 ppb |
| Warren Co. Sharts Road PWS OH8346912 | 145 | 0 | 0 | 0 | 1.7 ppb |
| Caesars Village MHP PWS OH8300012 | 90 | 0 | 0 | 0 | 0 ppb |
ZIP reports in Warren 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: 45032.
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.