F10/100
Yuba City Tap Water Quality: Is It Safe to Drink? (2026 Report)
Serving 70,256 residents · California
What's In Yuba City's Tap Water?
69
Contaminants Tested
0
Exceed EPA Limits
1
Above EPA Goals
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
Water Utility Details
CITY OF YUBA CITY
Population Served
70,256
Water Source
Surface Water
System ID
CA5110002
Frequently Asked Questions About Yuba City Water
Is Yuba City tap water safe to drink?
Yuba City, California tap water receives a grade of F (10/100), which is considered failing. 0 contaminant(s) exceed EPA maximum contaminant levels and 19 violation(s) are on record. Residents should consider using an NSF-certified water filter to reduce contaminant exposure.
What contaminants are in Yuba City's water?
Of the 69 contaminants tested in Yuba City's water supply, the most notable include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 contaminant(s) exceed EPA health goals (MCLGs), which are non-enforceable targets set at levels with no known health risk.
Does Yuba City have any water quality violations?
Yes, Yuba City has 19 EPA violation(s) on record, with the most recent in 2007. Violation types include TT, MR, MCL. 17 of these are health-based violations, which are the most serious category.
Do I need a water filter in Yuba City?
Yuba City 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. 1 contaminant(s) exceed these stricter goals.
Where does Yuba City's tap water come from?
Yuba City's drinking water is sourced from surface water and supplied by CITY OF YUBA CITY. The system serves approximately 70,256 people. Surface water sources include rivers, lakes, and reservoirs.
How often is Yuba City'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. Yuba City'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 Yuba City's water compare to other cities in California?
Yuba City's water quality score of 10/100 earns a grade of F, which is considered failing. This is a concerning score that suggests significant water quality issues. Visit our California state page to see how all cities in the state compare.
What should I do if I'm concerned about Yuba City's water quality?
If you have concerns about Yuba City'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 (CITY OF YUBA CITY) 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.