Ontario, CA · San Bernardino County
Water quality in Ontario, CA
3 community water systems are based in Ontario, CA, collectively serving 185,010 people. See per-utility violations, contaminants, and lead service line status.
At a glance
- Community systems
- 3
- People served
- 185k
- Groundwater systems
- 67%
- 2 systems
- Surface water systems
- 33%
- 1 systems
Community water systems based in Ontario
Systems whose EPA-filed administrative city is Ontario, sorted by population served. Regional authorities that serve Ontario but are based elsewhere are not listed here; check the ZIP lookup for a service-area-based answer.
- 1. ONTARIO MUNICIPAL UTILITIES COMPANY
San Bernardino · PWSID CA3610034
185k served - 2. CHINO BASIN DESALTER AUTH. - DESALTER 1
San Bernardino · PWSID CA3610075
0 served - 3. CHINO BASIN DESALTER AUTH. - DESALTER 2
Riverside · PWSID CA3310083
0 served