Protecting Water Quality

The Encina Water Pollution Control Facility (EWPCF) consistently complies with treatment requirements for effluent from the Encina Ocean Outfall, which is a 1.5-mile-long pipe with a 700-foot diffuser section at 150 feet depth below the ocean surface. The ocean and beaches are monitored and well protected from harmful impacts.

Encina Wastewater Authority also operates a regional laboratory certified by the Environmental Laboratory Accreditation Program (ELAP), which analyzes water quality samples for wastewater treatment process control, environmental compliance, and as a service to Member Agencies and other local government partner agencies.

Requirements are established in the National Pollutant Discharge Elimination System (NPDES) Permit (R9-2018-0059) issued by the San Diego Regional Water Quality Control Board. Monitoring programs sample ocean water and assess sediment quality, invertebrate, and fish populations on a regular basis. The program results are reported approximately every five years in the State of the Ocean Report. 

Energy Recovery
Vallecitos Water District
City of Carlsbad
City of Vista
City of Encinitas
Leucadia Wastewater District


  • CWEA San Diego Plant of the Year
  • EPA Green Power Partner
  • NACWA Peak Performance Award
  • Government Financial Officers
       Association CAFR Award

Contact Us

Encina Wastewater Authority
6200 Avenida Encinas
Carlsbad, CA 92011

  (442) 320-7015