Public water system · OH0904012
ActiveHamilton Public Water System
Community water system in Butler County, Ohio, drawing primarily on groundwater.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
62,447
Service connections
24,433
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
Violations & enforcement
| Began | Violation | Contaminant | Health-based | Status |
|---|---|---|---|---|
| 2025-12-30 | 72 | 7000 | No | Unaddressed |
| 2025-04-01 | 27 | 1009 | No | Archived |
| 2019-12-23 | 72 | 7000 | No | Resolved |
| 2019-01-10 | 72 | 7000 | No | Resolved |
| 2005-06-01 | 27 | 1009 | No | Resolved |
| 2005-04-01 | 27 | 1009 | No | Resolved |
| 2002-01-01 | 03 | 4000 | No | Resolved |
| 1997-09-01 | 21 | 3100 | Yes | Resolved |
| 1997-03-01 | 21 | 3100 | Yes | Resolved |
| 1994-10-01 | 21 | 3100 | Yes | Resolved |
| 1993-07-01 | 52 | 5000 | No | Resolved |
| 1993-06-01 | 21 | 3100 | Yes | Resolved |
Hamilton Public Water System: frequently asked questions
Is Hamilton Public Water System's water safe to drink?
Hamilton Public Water System is an active community water system regulated under the Safe Drinking Water Act, overseen by the OH state drinking water program. EPA SDWA violation and enforcement records for this system are being added to AquaCensus from EPA ECHO; consult EPA ECHO or your annual Consumer Confidence Report for its current compliance status.
Who runs Hamilton Public Water System?
Hamilton Public Water System (PWSID OH0904012) is a local government-owned community water system, regulated by the OH state drinking water program.
How many people does Hamilton Public Water System serve?
Hamilton Public Water System reports serving 62,447 people through 24,433 service connections in Butler County, Ohio.
Where does Hamilton Public Water System get its water?
EPA SDWIS lists this system's primary water source as groundwater.
Other water systems in Butler County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Butler Co. Water District 2 Pws | Butler | 116,572 | Community | Purchased surface water |
| Middletown City Pws | Butler | 51,229 | Community | Groundwater |
| Fairfield City Pws | Butler | 44,907 | Community | Groundwater |
| Pa American Water Co Butler | Butler | 43,286 | Community | Surface water |
| Southwest Regional Water District | Butler | 42,856 | Community | Groundwater |
| Cranberry Twp WTP | Butler | 42,000 | Community | Purchased surface water |