Water Quality: Corona, CA
5 water systems • 174,518 people served
Multiple Health ViolationsWater Quality Summary
Corona is served by 5 public water systems with a combined service population of 174,518 people, and has 35 EPA Safe Drinking Water Act violations on record. Critically, 4 of those are health-based violations, meaning one or more contaminants were detected above EPA-established safe levels — a serious public health concern. Corona's violation count is 27% below the national average for California. Contaminants associated with violations include Selenium, Stage 2 DBP.
Contaminants Found
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)
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 Corona
| System Name | PWSID | Source | Population | Violations |
|---|---|---|---|---|
| CORONA, CITY OF | CA3310037 | Surface Water | 168,575 | 9 |
| HOME GARDENS COUNTY WD | CA3310018 | Surface Water | 3,095 | 0 |
| CALIFORNIA INSTITUTION FOR WOMEN | CA3610851 | Groundwater | 1,195 | 0 |
| GLEN IVY HOT SPRINGS | CA3301294 | Groundwater | 1,087 | 9 |
| GLEN EDEN SUN CLUB | CA3301283 | Surface Water | 566 | 17 |
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.