A100/100
DEL ORO WATER CO-FERNDALE — Water Quality Report 2026
Serving 1,662 people · California
Water Source
Groundwater
County
—
System ID
CA1210007
Violations
0
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.004 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
No violations in the past 5 years
This system has a clean compliance history.
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 DEL ORO WATER CO-FERNDALE
Is DEL ORO WATER CO-FERNDALE water safe to drink?
DEL ORO WATER CO-FERNDALE water receives a grade of A (100/100), which is considered excellent. Out of 1 contaminants tested, none exceed EPA legal limits. 1 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has DEL ORO WATER CO-FERNDALE detected?
1 contaminants were tested in DEL ORO WATER CO-FERNDALE's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does DEL ORO WATER CO-FERNDALE have any EPA violations?
No, DEL ORO WATER CO-FERNDALE has zero EPA violations on record. This indicates consistent compliance with federal drinking water standards.
How many people does DEL ORO WATER CO-FERNDALE serve?
DEL ORO WATER CO-FERNDALE serves approximately 1,662 people, California.
What type of water does DEL ORO WATER CO-FERNDALE provide?
DEL ORO WATER CO-FERNDALE sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is CA1210007.
How does DEL ORO WATER CO-FERNDALE compare to other utilities in California?
DEL ORO WATER CO-FERNDALE scores 100/100 with a grade of A (excellent). This places it among the higher-performing utilities in the state. Visit our California state page for a full comparison of water systems.