Public water system record
Carlsbad MWD
Serves Carlsbad, San Diego County, CA · 95,158 people served
Federal records show no health-based violations and no monitoring or reporting issues for Carlsbad MWD in the last ten years.
System profile
- Health-based violations, last 10 years
- 0
- Resolved
- 0
- Unresolved
- 0
- Any acute record
- No
- Monitoring issues, last 10 years
- 0
Key facts
- Carlsbad MWD buys its water from San Diego County Water Authority.
- Lead pipe inventory: 0 lead and 0 unknown out of 28,799 service lines.
Check whether Carlsbad MWD 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.
None since October 2016, and no monitoring or reporting violations either.
Where the water comes from
Carlsbad MWD buys its water from San Diego County Water Authority. It lists no wells or intakes of its own. It also has emergency connections to City of Oceanside and Vallecitos WD. 1 other public water system has an emergency connection to Carlsbad MWD.
Buys water from
- San Diego County Water Authority San Diego, CA
Emergency or part-time connections to
- City of Oceanside Oceanside, CA
- Vallecitos WD San Marcos, CA
Annual water quality report
Carlsbad MWD 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