C57/100
CITY OF MADERA — Water Quality Report 2026
Serving 66,560 people · California
Water Source
Groundwater
County
—
System ID
CA2010002
Violations
9
Contaminant Test Results
2 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
vanadium | 30.00 µg/L | — | Above Goal |
Lead (90th percentile) | 0.003 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2017.
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 CITY OF MADERA
Is CITY OF MADERA water safe to drink?
CITY OF MADERA water receives a grade of C (57/100), which is considered fair. 0 contaminant(s) exceed EPA legal limits and 9 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has CITY OF MADERA detected?
66 contaminants were tested in CITY OF MADERA's water. Notable contaminants include Lead (90th percentile), vanadium. No contaminants exceed EPA legal limits. 2 exceed EPA health goals (MCLGs).
Does CITY OF MADERA have any EPA violations?
Yes, CITY OF MADERA has 9 EPA violation(s) on record, with the most recent in 2017. Violation types include MR, MCL. 7 are health-based violations.
How many people does CITY OF MADERA serve?
CITY OF MADERA serves approximately 66,560 people, California. The system provides water to 1 community: Madera.
What type of water does CITY OF MADERA provide?
CITY OF MADERA sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is CA2010002.
How does CITY OF MADERA compare to other utilities in California?
CITY OF MADERA scores 57/100 with a grade of C (fair). This score indicates room for improvement compared to other utilities. Visit our California state page for a full comparison of water systems.