Public water system record
Olivenhain MWD
Serves an area of San Diego County, CA that includes Encinitas, Carlsbad, Fairbanks Ranch and 1 more place · 86,458 people served
Federal records show no health-based violations and no monitoring or reporting issues for Olivenhain 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
- Olivenhain MWD buys its water from San Diego County Water Authority.
- Lead pipe inventory: 0 lead and 0 unknown out of 28,894 service lines.
Check whether Olivenhain 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
Olivenhain 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 San Dieguito WD and Santa Fe I.D. 2 other community water systems buy water from Olivenhain MWD. 2 other public water systems have emergency connections to Olivenhain MWD.
Buys water from
- San Diego County Water Authority San Diego, CA
Emergency or part-time connections to
- San Dieguito WD Encinitas, CA
- Santa Fe I.D. Rancho Santa Fe, CA
Community systems that buy water from it
- San Diego County Water Authority San Diego, CA
- Vallecitos WD San Marcos, CA
Annual water quality report
Olivenhain 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