A95/100
Azusa Tap Water Quality: Is It Safe to Drink? (2026 Report)
Serving 110,044 residents · California
What's In Azusa's Tap Water?
76
Contaminants Tested
0
Exceed EPA Limits
0
Above EPA Goals
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 1992.
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
AZUSA LIGHT AND WATER
Population Served
110,044
Water Source
Surface Water
System ID
CA1910007
Frequently Asked Questions About Azusa Water
Is Azusa tap water safe to drink?
Azusa, California tap water receives a grade of A (95/100), which is considered excellent. Out of 76 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 Azusa's water?
76 contaminants were tested in Azusa's water supply. No contaminants exceed EPA legal limits (MCLs) or health goals (MCLGs), which is a positive indicator of water quality.
Does Azusa have any water quality violations?
Yes, Azusa has 1 EPA violation(s) on record, with the most recent in 1992. Violation types include MCL. 1 of these are health-based violations, which are the most serious category.
Do I need a water filter in Azusa?
Azusa 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 Azusa's tap water come from?
Azusa's drinking water is sourced from surface water and supplied by AZUSA LIGHT AND WATER. The system serves approximately 110,044 people. Surface water sources include rivers, lakes, and reservoirs.
How often is Azusa'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. Azusa'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 Azusa's water compare to other cities in California?
Azusa's water quality score of 95/100 earns a grade of A, which is considered excellent. This places Azusa 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 Azusa's water quality?
If you have concerns about Azusa'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 (AZUSA LIGHT AND WATER) 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.