Water Quality: Ontario, CA
3 water systems • 185,010 people served
No Health Violations0
Total Violations
0
Health-Based Violations
3
Water Systems
185,010
Population Served
Water Quality Summary
Ontario has no health-based drinking water violations on record in the EPA SDWIS database. The city's 3 water systems have a clean compliance record.
Water Systems Serving Ontario
| System Name | PWSID | Source | Population | Violations |
|---|---|---|---|---|
| ONTARIO MUNICIPAL UTILITIES COMPANY | CA3610034 | Surface Water | 185,010 | 0 |
| CHINO BASIN DESALTER AUTH. - DESALTER 2 | CA3310083 | Groundwater | 0 | 0 |
| CHINO BASIN DESALTER AUTH. - DESALTER 1 | CA3610075 | Groundwater | 0 | 0 |
Concerned About Your Water?
A home water filter can remove common contaminants. NSF-certified filters are tested against EPA standards.
Consider a reverse osmosis system for comprehensive filtration or a carbon filter for basic improvement.
Data Sources
Drinking water violation data from the EPA Safe Drinking Water Information System (SDWIS). Data includes all recorded violations for active community water systems.