Water Quality: Rancho Cucamonga, CA
3 water systems • 211,546 people served
Some ConcernsWater Quality Summary
Rancho Cucamonga is served by 3 public water systems with a combined service population of 211,546 people, and has 15 EPA Safe Drinking Water Act violations on record. Critically, 1 of those are health-based violation, meaning one or more contaminants were detected above EPA-established safe levels — a serious public health concern. Rancho Cucamonga's violation count is 69% below the national average for California. Contaminants associated with violations include Contaminant 3001.
Contaminants Found
Water Systems Serving Rancho Cucamonga
| System Name | PWSID | Source | Population | Violations |
|---|---|---|---|---|
| CUCAMONGA VALLEY WATER DISTRICT | CA3610018 | Surface Water | 211,069 | 0 |
| CALIFORNIAN MOBILE HOME PARK | CA1900843 | Groundwater | 372 | 12 |
| MONO VISTA RANCH MHP | CA5500124 | Groundwater | 105 | 3 |
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.
Other Cities in California
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.