COUNTY WATER-SYSTEM LEDGER
Hamilton, Ohio
EPA’s September 2026 export lists 9 active community water systems serving Hamilton, Ohio, with 5 current-violation flags and 1 serious-violator flags among the covered systems.
Source: EPA SDWIS system-search export · Active community systems serving 2,500+ people · Snapshot 13 Sep 2026
01 / SYSTEMS
Water systems serving Hamilton, Ohio
EPA associates 9 covered systems with Hamilton, Ohio; their reported population-served values total 827,862 and may overlap.
Ordered by reported population served. Open any record for separate health, monitoring, notice, other, and serious-violator flags.
| Water system | Population served | Primary source | Current export status |
|---|---|---|---|
| Cincinnati Public Water SystemOH3102612 | 750,200 | Surface water | No current violation flagged |
| Norwood City PWSOH3101703 | 19,870 | Surface water purchased | Other current violation flag |
| Indian Hill City PWSOH3101112 | 15,000 | Ground water | No current violation flagged |
| Harrison City PWSOH3100812 | 11,600 | Ground water | Other current violation flag |
| Wyoming City PWSOH3102212 | 9,700 | Ground water | No current violation flagged |
| Reading City PWSOH3101812 | 9,506 | Surface water purchased | Current serious-violator flag |
| Cleves Village PWSOH3100512 | 6,000 | Ground water | Current monitoring/reporting flag |
| Lockland Village PWSOH3101212 | 3,486 | Ground water | No current violation flagged |
| Glendale Village PWSOH3100712 | 2,500 | Ground water | Other current violation flag |
02 / SOURCE MIX
Primary water sources for Hamilton, Ohio
EPA classifies 9 systems serving Hamilton, Ohio across 3 primary-source categories; Surface water is the largest category with 1 systems.
It is the sum of each listed system's reported population served, not a census estimate. Service areas can overlap and some systems list multiple cities or counties.