Project Overview

The Carlsbad Desalination Project consists of a 50 million gallon per day (56,000 acre-feet per year (AFY)) seawater desalination plant and the associated 10-mile water delivery pipeline. The project is located at the Encina Power Station in the City of Carlsbad. Desalination has evolved into a desirable water supply alternative by tapping the largest reservoir in the world - the Pacific Ocean. The technology, available for decades, is at work in many arid areas of the world including the Middle East, the Mediterranean and the Caribbean. A 30-year Water Purchase Agreement is in place between the San Diego County Water Authority (SDCWA) and Poseidon for the entire output of the plant. Construction on the plant and pipeline is under way and the Project will be delivering water to the businesses and resident in San Diego County by late 2015.

Need

State, regional and local water plans all have confirmed that immediate and pressing water needs cannot be accomplished without some investment in seawater desalination.

  • The project will provide 56,000 AFY of new water supply for the San Diego region.
  • The CA Department of Water Resources’ 2009 Water Plan Update identifies the need for 275,000 AF of desalinated water by 2025.
  • The Metropolitan Water District of Southern California’s Integrated Water Resources Plan identifies a need for 150,000 AFY of seawater desalination (including 56,000 AFY from the Carlsbad project) by the year 2020.
  • The San Diego County Water Authority’s (SDCWA) Urban Water Management Plan identifies a need for 56,000 AFY of seawater desalination from the Carlsbad project by 2016.

Objectives

  • Provide a local source of potable water to supplement imported water supplies
  • Improve water supply reliability
  • Improve water quality
  • Complement local and regional water conservation and water recycling programs.