F10/100
CITY OF YUBA CITY — Water Quality Report 2026
Serving 70,256 people · California
Water Source
Surface Water
County
—
System ID
CA5110002
Violations
19
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.001 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2007.
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 YUBA CITY
Is CITY OF YUBA CITY water safe to drink?
CITY OF YUBA CITY water receives a grade of F (10/100), which is considered failing. 0 contaminant(s) exceed EPA legal limits and 19 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has CITY OF YUBA CITY detected?
69 contaminants were tested in CITY OF YUBA CITY's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does CITY OF YUBA CITY have any EPA violations?
Yes, CITY OF YUBA CITY has 19 EPA violation(s) on record, with the most recent in 2007. Violation types include TT, MR, MCL. 17 are health-based violations.
How many people does CITY OF YUBA CITY serve?
CITY OF YUBA CITY serves approximately 70,256 people, California. The system provides water to 1 community: Yuba City.
What type of water does CITY OF YUBA CITY provide?
CITY OF YUBA CITY sources its water from surface water. Surface water comes from rivers, lakes, or reservoirs and typically requires more extensive treatment. The utility's system ID is CA5110002.
How does CITY OF YUBA CITY compare to other utilities in California?
CITY OF YUBA CITY scores 10/100 with a grade of F (failing). This score suggests significant water quality concerns relative to other utilities. Visit our California state page for a full comparison of water systems.