A100/100
CAL AM - SUBURBAN ROSEMONT — Water Quality Report 2026
Serving 54,793 people · California
Water Source
Purchased Surface Water
County
—
System ID
CA3410010
Violations
0
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
chlorate | 980.00 µg/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 - SUBURBAN ROSEMONT
Is CAL AM - SUBURBAN ROSEMONT water safe to drink?
CAL AM - SUBURBAN ROSEMONT water receives a grade of A (100/100), which is considered excellent. Out of 69 contaminants tested, none exceed EPA legal limits. 1 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has CAL AM - SUBURBAN ROSEMONT detected?
69 contaminants were tested in CAL AM - SUBURBAN ROSEMONT's water. Notable contaminants include chlorate. No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does CAL AM - SUBURBAN ROSEMONT have any EPA violations?
No, CAL AM - SUBURBAN ROSEMONT has zero EPA violations on record. This indicates consistent compliance with federal drinking water standards.
How many people does CAL AM - SUBURBAN ROSEMONT serve?
CAL AM - SUBURBAN ROSEMONT serves approximately 54,793 people, California.
What type of water does CAL AM - SUBURBAN ROSEMONT provide?
CAL AM - SUBURBAN ROSEMONT sources its water from purchased surface water. Surface water comes from rivers, lakes, or reservoirs and typically requires more extensive treatment. The utility's system ID is CA3410010.
How does CAL AM - SUBURBAN ROSEMONT compare to other utilities in California?
CAL AM - SUBURBAN ROSEMONT 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.