Water Quality: Chino, CA
2 water systems • 97,102 people served
Multiple Health ViolationsWater Quality Summary
Chino is served by 2 public water systems with a combined service population of 97,102 people, and has 35 EPA Safe Drinking Water Act violations on record. Critically, 8 of those are health-based violations, meaning one or more contaminants were detected above EPA-established safe levels — a serious public health concern. Chino's violation count is 27% below the national average for California. Contaminants associated with violations include Chlorine Dioxide, Gross Alpha, Selenium.
Contaminants Found
Can cause anemia in infants and young children; may cause nervous system effects at high levels.
Common source: Water treatment disinfectant used to control taste, odor, and microorganisms
EPA limit: 0.8 mg/L
Alpha-emitting radioactive particles increase cancer risk, particularly from bone and other internal cancers.
Common source: Natural uranium and radium in geological formations
EPA limit: 15 pCi/L (excluding radon and uranium)
Hair loss, nail brittleness, and nervous system damage at elevated concentrations.
Common source: Natural geological deposits, mining discharges, oil refinery waste
EPA limit: 0.05 mg/L (50 ppb)
Water Systems Serving Chino
| System Name | PWSID | Source | Population | Violations |
|---|---|---|---|---|
| CHINO, CITY OF | CA3610012 | Surface Water | 86,435 | 13 |
| CALIFORNIA INSTITUTION FOR MEN | CA3610850 | Groundwater | 10,667 | 22 |
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.