A99/100
SANTA MARGARITA WATER DISTRICT — Water Quality Report 2026
Serving 168,289 people · California
Water Source
Purchased Surface Water
County
—
System ID
CA3010101
Violations
1
Contaminant Test Results
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2009.
Understanding violation severity
Tier 1Urgent health risk. Utility must notify all customers within 24 hours.Tier 2Important health or treatment issue. Customers notified within 30 days.Tier 3Administrative or monitoring issue. Reported in the annual water quality report.
Source: EPA Safe Drinking Water Information System (SDWIS) · Updated quarterly
Frequently Asked Questions About SANTA MARGARITA WATER DISTRICT
Is SANTA MARGARITA WATER DISTRICT water safe to drink?
SANTA MARGARITA WATER DISTRICT water receives a grade of A (99/100), which is considered excellent. Out of 76 contaminants tested, none exceed EPA legal limits. The water meets federal safety standards.
What contaminants has SANTA MARGARITA WATER DISTRICT detected?
76 contaminants were tested in SANTA MARGARITA WATER DISTRICT's water. No contaminants exceed EPA legal limits or health goals, indicating good water quality management.
Does SANTA MARGARITA WATER DISTRICT have any EPA violations?
Yes, SANTA MARGARITA WATER DISTRICT has 1 EPA violation(s) on record, with the most recent in 2009. Violation types include MR.
How many people does SANTA MARGARITA WATER DISTRICT serve?
SANTA MARGARITA WATER DISTRICT serves approximately 168,289 people, California.
What type of water does SANTA MARGARITA WATER DISTRICT provide?
SANTA MARGARITA WATER DISTRICT sources its water from purchased surface water. Surface water comes from rivers, lakes, or reservoirs and typically requires more extensive treatment. The utility's system ID is CA3010101.
How does SANTA MARGARITA WATER DISTRICT compare to other utilities in California?
SANTA MARGARITA WATER DISTRICT scores 99/100 with a grade of A (excellent). This places it among the higher-performing utilities in the state. Visit our California state page for a full comparison of water systems.