Water Quality: Westminster, CA
2 water systems • 92,216 people served
Some ConcernsWater Quality Summary
Westminster is served by 2 public water systems with a combined service population of 92,216 people, and has 8 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. Westminster's violation count is 83% below the national average for California. Contaminants associated with violations include Chlorine.
Contaminants Found
Eye and nose irritation at high levels; long-term exposure above the MCL may cause liver and kidney damage.
Common source: Water treatment disinfectant added to kill harmful microorganisms
EPA limit: 4.0 mg/L (MRDL — Maximum Residual Disinfectant Level)
Water Systems Serving Westminster
| System Name | PWSID | Source | Population | Violations |
|---|---|---|---|---|
| CITY OF WESTMINSTER | CA3010064 | Surface Water | 90,911 | 0 |
| MIDWAY CITY MUTUAL WC | CA3010097 | Groundwater | 1,305 | 8 |
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.