Water Quality: Morro Bay, CA
3 water systems • 14,125 people served
Some ConcernsWater Quality Summary
Morro Bay is served by 3 public water systems with a combined service population of 14,125 people, and has 5 EPA Safe Drinking Water Act violations on record. Critically, 3 of those are health-based violations, meaning one or more contaminants were detected above EPA-established safe levels — a serious public health concern. Morro Bay's violation count is 90% below the national average for California. Contaminants associated with violations include Selenium.
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)
Water Systems Serving Morro Bay
| System Name | PWSID | Source | Population | Violations |
|---|---|---|---|---|
| MORRO BAY PW DEPT - WATER DIVISION | CA4010011 | Surface Water | 13,757 | 0 |
| RANCHO COLINA MOBILE HOME PARK | CA4000653 | Groundwater | 249 | 3 |
| DUNE 3 MUTUAL WATER COMPANY, LLC | CA1502690 | Groundwater | 119 | 2 |
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.