A99/100
CAL-AM WATER COMPANY - DUARTE — Water Quality Report 2026
Serving 24,773 people · California
Water Source
Groundwater
County
—
System ID
CA1910186
Violations
0
Contaminant Test Results
2 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
1,4-dioxane | 1.02 µg/L | — | Above Goal |
Lead (90th percentile) | 0.001 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 CAL-AM WATER COMPANY - DUARTE
Is CAL-AM WATER COMPANY - DUARTE water safe to drink?
CAL-AM WATER COMPANY - DUARTE water receives a grade of A (99/100), which is considered excellent. Out of 66 contaminants tested, none exceed EPA legal limits. 2 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has CAL-AM WATER COMPANY - DUARTE detected?
66 contaminants were tested in CAL-AM WATER COMPANY - DUARTE's water. Notable contaminants include Lead (90th percentile), 1,4-dioxane. No contaminants exceed EPA legal limits. 2 exceed EPA health goals (MCLGs).
Does CAL-AM WATER COMPANY - DUARTE have any EPA violations?
No, CAL-AM WATER COMPANY - DUARTE has zero EPA violations on record. This indicates consistent compliance with federal drinking water standards.
How many people does CAL-AM WATER COMPANY - DUARTE serve?
CAL-AM WATER COMPANY - DUARTE serves approximately 24,773 people, California.
What type of water does CAL-AM WATER COMPANY - DUARTE provide?
CAL-AM WATER COMPANY - DUARTE sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is CA1910186.
How does CAL-AM WATER COMPANY - DUARTE compare to other utilities in California?
CAL-AM WATER COMPANY - DUARTE scores 99/100 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.