A92/100
CAL-AM WATER CORONADO — Water Quality Report 2026
Serving 106,000 people · California
Water Source
Purchased Surface Water
County
—
System ID
CA3710001
Violations
1
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.002 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
1
Violation (last 5yr)
0
Unresolved
1
Health-Related
TIER 1 — URGENTResolved
Maximum Contaminant Level Violation
When: August 1, 2023 – August 31, 2023Rule: Total Coliform RuleEnforcement: Formal — state order issued
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 CORONADO
Is CAL-AM WATER CORONADO water safe to drink?
CAL-AM WATER CORONADO water receives a grade of A (92/100), 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 WATER CORONADO detected?
69 contaminants were tested in CAL-AM WATER CORONADO's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does CAL-AM WATER CORONADO have any EPA violations?
Yes, CAL-AM WATER CORONADO has 1 EPA violation(s) on record, with the most recent in 2023. Violation types include MCL. 1 are health-based violations.
How many people does CAL-AM WATER CORONADO serve?
CAL-AM WATER CORONADO serves approximately 106,000 people, California.
What type of water does CAL-AM WATER CORONADO provide?
CAL-AM WATER CORONADO 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 CA3710001.
How does CAL-AM WATER CORONADO compare to other utilities in California?
CAL-AM WATER CORONADO scores 92/100 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.