Public water system record
Cal-Am Water Coronado
Serves San Diego, Coronado and Imperial Beach, San Diego County, CA · 106,000 people served
Federal records show 1 health-based violation and no monitoring/reporting issues for Cal-Am Water Coronado in the last ten years. The most serious issue in this window was a resolved Revised Total Coliform Rule violation.
System profile
- Health-based violations, last 10 years
- 1
- Resolved
- 1
- Unresolved
- 0
- Any acute record
- Yes
- Monitoring issues, last 10 years
- 0
Key facts
- Cal-Am Water Coronado buys its water from City of San Diego.
- Most recent formal enforcement: compliance order (no penalty) by California, October 2023.
- Lead pipe inventory: 0 lead and 0 unknown out of 22,089 service lines.
Check whether Cal-Am Water Coronado serves your address
Health-based violations
Since October 2016Violation data reflects EPA records through March 2026. For the most current status, visit the EPA ECHO database.
| Contaminant | Rule family | Start date | Status | Acute |
|---|---|---|---|---|
|
Revised Total Coliform Rule
Contaminant limit exceeded
|
110 | Aug 1, 2023 | Resolved | Yes |
Enforcement actions
California regulators took 1 formal enforcement action against Cal-Am Water Coronado in 2023. The most recent was a compliance order (no penalty) in October 2023.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Oct 16, 2023 | California | Compliance order (no penalty) | 1 violation (1 health-based): Revised Total Coliform Rule |
What the violations mean
Revised Total Coliform Rule
1 incidentThe system did not meet a requirement of the Revised Total Coliform Rule
Coliform and E. coli rules protect against bacteria in the distribution system
Where the water comes from
Cal-Am Water Coronado buys its water from City of San Diego. It lists no wells or intakes of its own. It also has emergency connections to Nas North Island & Nab Coronado, Otay Water District and Sweetwater Authority. 3 other public water systems have emergency connections to Cal-Am Water Coronado.
Buys water from
- City of San Diego San Diego, CA
Emergency or part-time connections to
- Nas North Island & Nab Coronado San Diego, CA
- Otay Water District Spring Valley, CA
- Sweetwater Authority Chula Vista, CA
Annual water quality report
Cal-Am Water Coronado must give its customers an annual water quality report (Consumer Confidence Report) by July 1, with the levels its tests found in the previous year.
Systems serving 10,000 or more people must mail or deliver the report to every customer, and from 2027 they must send it twice a year.
Find a posted report with EPA's Consumer Confidence Report search
Testing your own water
To test the water at your tap, or a private well this record does not cover, use a laboratory certified for drinking water by California.
Certified drinking water labs by state EPA guidance for private wells