Public water system · OH7003512
ActiveOntario City
Community water system in Richland County, Ohio, drawing primarily on groundwater.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
6,756
Service connections
2,769
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
Violations & enforcement
| Began | Violation | Contaminant | Health-based | Status |
|---|---|---|---|---|
| 2025-07-02 | 4H | 5200 | No | Unaddressed |
| 2018-12-13 | 72 | 7000 | No | Unaddressed |
| 2002-07-01 | 72 | 7000 | No | Resolved |
| 1999-07-01 | 03 | 1040 | No | Resolved |
| 1998-01-01 | 24 | 3100 | No | Resolved |
| 1995-01-01 | 03 | 1020 | No | Resolved |
| 1995-01-01 | 03 | 1025 | No | Resolved |
| 1995-01-01 | 03 | 1035 | No | Resolved |
| 1995-01-01 | 03 | 1036 | No | Resolved |
| 1995-01-01 | 03 | 1045 | No | Resolved |
| 1995-01-01 | 03 | 4000 | No | Resolved |
| 1995-01-01 | 03 | 1024 | No | Resolved |
Ontario City: frequently asked questions
Is Ontario City's water safe to drink?
Ontario City 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 Ontario City?
Ontario City (PWSID OH7003512) is a local government-owned community water system, regulated by the OH state drinking water program.
How many people does Ontario City serve?
Ontario City reports serving 6,756 people through 2,769 service connections in Richland County, Ohio.
Where does Ontario City get its water?
EPA SDWIS lists this system's primary water source as groundwater.
Other water systems in Richland County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Columbia City of (Sc4010001) | Richland | 319,500 | Community | Surface water |
| Mansfield City | Richland | 51,000 | Community | Surface water |
| Fort Jackson (Sc4010501) | Richland | 31,000 | Community | Purchased surface water |
| Shelby City | Richland | 9,453 | Community | Surface water |
| Olney | Richland | 8,877 | Community | Surface water |
| Wahpeton City of | Richland | 7,766 | Community | Groundwater |