F0/100
RIVERDALE PUBLIC UTILITY DISTRICT — Water Quality Report 2026
Serving 2,756 people · California
Water Source
Groundwater
County
—
System ID
CA1010028
Violations
50
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.006 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
1
Violation (last 5yr)
1
Unresolved
1
Health-Related
TIER 2Unresolved
Exceeded the Maximum Contaminant Level (running average)
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 RIVERDALE PUBLIC UTILITY DISTRICT
Is RIVERDALE PUBLIC UTILITY DISTRICT water safe to drink?
RIVERDALE PUBLIC UTILITY DISTRICT water receives a grade of F (0/100), which is considered failing. 0 contaminant(s) exceed EPA legal limits and 50 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has RIVERDALE PUBLIC UTILITY DISTRICT detected?
1 contaminants were tested in RIVERDALE PUBLIC UTILITY DISTRICT's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does RIVERDALE PUBLIC UTILITY DISTRICT have any EPA violations?
Yes, RIVERDALE PUBLIC UTILITY DISTRICT has 50 EPA violation(s) on record, with the most recent in 2025. Violation types include MCL, MR. 40 are health-based violations.
How many people does RIVERDALE PUBLIC UTILITY DISTRICT serve?
RIVERDALE PUBLIC UTILITY DISTRICT serves approximately 2,756 people, California.
What type of water does RIVERDALE PUBLIC UTILITY DISTRICT provide?
RIVERDALE PUBLIC UTILITY DISTRICT sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is CA1010028.
How does RIVERDALE PUBLIC UTILITY DISTRICT compare to other utilities in California?
RIVERDALE PUBLIC UTILITY DISTRICT scores 0/100 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.