San Diego completes installation of $182 million Pure Water pipeline

San Diego has installed the final section of its North City Pure Water Pipeline, completing a major conveyance link in the city’s water-reuse program. The city announced the milestone on November 4; commissioning and testing still remain before the system enters service.

The $182 million project connects the North City Pure Water Facility in Sorrento Valley with Miramar Reservoir. Once operational, it is designed to transport 30 million gallons of purified water daily. The final pipe section was installed beneath Hoyt Park Drive in Scripps Ranch.

Construction began in 2021. The scope includes eight miles of 48-inch steel pipeline, fiber-optic infrastructure, six tunnels, a railroad bridge crossing, a dechlorination facility and approximately one mile of underwater pipeline within the reservoir.

The city says crews will now test and commission the system while completing curb ramps, repaving and restriping. This is a pipeline-installation milestone within Pure Water Phase 1, not confirmation that the overall water-production system is operating. The announcement does not identify a new procurement opportunity or provide a firm service-start date.

Source report: Original announcement, 2026-11-04. Reviewed November 9, 2026.