Carlsbad Desalination Construction Project

In December 2012, Poseidon Water finalized a 30-year water agreement with the San Diego County Water Authority for the purchase of 50 million gallons per day of desalinated seawater and secured financing for the Project. The water will be produced at the desalination plant being built in Carlsbad and conveyed to the San Diego County Water Authority’s water system via a 10-mile pipeline.

Poseidon Water has contracted with a joint venture of Kiewit Infrastructure West and J.F. Shea Construction, Inc., to design and build the desalination plant and pipeline. IDE Technologies, Ltd., a world leader in desalination technology and operations, will engineer the desalination plant’s design and equipment and handle plant operations.

Construction on the plant began in late 2012 and pipeline construction began in spring of 2013. Pipeline construction was completed in June 2015, and construction continues at the plant. To keep the public informed about the progress of construction, Poseidon Water provides regular construction updates on this website related to timing and potential detours and closures. Poseidon Water is working to minimize impacts to nearby businesses, residents, and commuters during construction. We appreciate your patience during this vital water supply project.


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Construction News Archive

  • Pipeline Installation is Complete

    June 30, 2015

    This week, construction crews installed the final segment of the Carlsbad Desalination Project’s pipeline. The pipeline stretches 10 miles from the nearly complete Carlsbad Desalination Plant through the cities of Carlsbad, Vista and San Marcos to the San Diego County Water Authority’s Second Aqueduct. Read more.

  • Pipeline Construction Reaches 75 Percent Complete Milestone

    September 2, 2014 

    As of this week, 75 percent of the 10-mile pipeline has been installed, putting theCarlsbad Desalination Project on pace to begin delivering high quality, drought-prooffresh water to San Diego County by late 2015. Read more.

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