A95/100
San Fernando Tap Water Quality: Is It Safe to Drink? (2026 Report)
Serving 23,946 residents · California
What's In San Fernando's Tap Water?
66
Contaminants Tested
0
Exceed EPA Limits
0
Above EPA Goals
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 1991.
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
Water Utility Details
SAN FERNANDO-CITY, WATER DEPT.
Population Served
23,946
Water Source
Groundwater
System ID
CA1910143
Frequently Asked Questions About San Fernando Water
Is San Fernando tap water safe to drink?
San Fernando, California tap water receives a grade of A (95/100), which is considered excellent. Out of 66 contaminants tested, none exceed EPA maximum contaminant levels (MCLs). While the water meets federal standards, some residents may still choose to use a filter for additional peace of mind.
What contaminants are in San Fernando's water?
66 contaminants were tested in San Fernando's water supply. No contaminants exceed EPA legal limits (MCLs) or health goals (MCLGs), which is a positive indicator of water quality.
Does San Fernando have any water quality violations?
Yes, San Fernando has 1 EPA violation(s) on record, with the most recent in 1991. Violation types include MCL. 1 of these are health-based violations, which are the most serious category.
Do I need a water filter in San Fernando?
San Fernando water meets EPA standards, so a filter is not strictly necessary. However, some residents prefer the added security of a water filter. EPA health goals (MCLGs) are stricter than legal limits and are set at levels with zero expected health risk. All contaminants are within health goals.
Where does San Fernando's tap water come from?
San Fernando's drinking water is sourced from groundwater and supplied by SAN FERNANDO-CITY, WATER DEPT.. The system serves approximately 23,946 people. Groundwater is pumped from underground aquifers, which often provides natural filtration.
How often is San Fernando's water tested?
Under the Safe Drinking Water Act (SDWA), water utilities are required to regularly test for over 90 contaminants. Testing frequency varies by contaminant — some are tested monthly, others quarterly or annually. San Fernando's water systems must report results to the EPA and publish an annual Consumer Confidence Report (CCR). The data on this page reflects the latest available EPA testing data.
How does San Fernando's water compare to other cities in California?
San Fernando's water quality score of 95/100 earns a grade of A, which is considered excellent. This places San Fernando among the better-performing water systems in California. Visit our California state page to see how all cities in the state compare.
What should I do if I'm concerned about San Fernando's water quality?
If you have concerns about San Fernando's tap water, consider these steps: (1) Request your utility's annual Consumer Confidence Report for detailed local data. (2) Get your water independently tested through a state-certified laboratory. (3) Consider an NSF-certified water filter rated for the contaminants found in your area. (4) Contact your water utility (SAN FERNANDO-CITY, WATER DEPT.) with specific questions. (5) Report water quality issues to your state drinking water program or the EPA Safe Drinking Water Hotline at 800-426-4791.