Providing Reliable, High-Quality Drinking Water for San Diego

Tetra Tech used our Leading with Science® approach and expertise in desalination plants to design a drought-proof drinking water solution for the Claude “Bud” Lewis Carlsbad Seawater Desalination Project in San Diego, California.

Tetra Tech was a key design partner in the Western Hemisphere’s largest, most technologically advanced and energy efficient seawater desalination plant. The project provides a new source of fresh drinking water—desalinated seawater from the Pacific Ocean—to serve the demands of San Diego residents.

As part of the Poseidon Resources team, Tetra Tech prepared the 30 percent design drawings for the 54 million gallon per day seawater desalination plant and the 10-mile, 54-inch conveyance pipeline. The plant was designed using the latest technology, including use of fish-friendly intake pumps, a pretreatment system to remove seawater contaminants, and energy recovery devices to reduce pumping at the reverse osmosis system. As part of the Kiewit Shea team, Tetra Tech also provided final design and construction engineering services for the conveyance pipeline and new intake pump station.

The pipeline was separated into six packages to enable construction to progress on multiple headings while the design and approvals were completed. Tetra Tech was challenged to complete, permit, and obtain approval for the initial design package three months after receiving notice to proceed.


Drinking Water