Water Quality: Rancho Cucamonga, AZ
1 water system • 450 people served
Multiple Health ViolationsWater Quality Summary
Rancho Cucamonga is served by 1 public water system with a combined service population of 450 people, and has 79 EPA Safe Drinking Water Act violations on record. Critically, 5 of those are health-based violations, meaning one or more contaminants were detected above EPA-established safe levels — a serious public health concern. Rancho Cucamonga's violation count is 79% below the national average for Arizona. Contaminants associated with violations include Barium, Stage 2 DBP.
Contaminants Found
Increases blood pressure and causes cardiovascular effects with long-term exposure.
Common source: Natural rock deposits, oil drilling operations, coal power plant waste
EPA limit: 2 mg/L
Trihalomethanes and haloacetic acids that increase cancer risk and may cause adverse reproductive outcomes.
Common source: Chlorine disinfection reacting with natural organic matter in source water
EPA limit: TTHM: 0.080 mg/L; HAA5: 0.060 mg/L
Water Systems Serving Rancho Cucamonga
| System Name | PWSID | Source | Population | Violations |
|---|---|---|---|---|
| LAGUNA MOBILE HOME AND RV PARK | AZ0414322 | Groundwater | 450 | 79 |
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 Arizona
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.