Facilities and Operations

News on the processes, people, and places working to deliver a safe and reliable wholesale water supply to the San Diego region’s 24 member water agencies.

The Water Authority is in the final stages of the Lake Murray to Sweetwater Reservoir Pipeline 3 Relining Project, including the restoration of roadways to pre-construction condition. La Mesa Relining Project

La Mesa Relining Project on Pace for Completion in June

Major construction activities have concluded at a pipeline relining project in La Mesa and Spring Valley, and the entire project is on track for completion by the end of June. The Lake Murray to Sweetwater Reservoir Pipeline 3 Relining Project rehabilitated 4.3 miles of 66- and 69-inch diameter pipes, extending the pipeline’s service life by […]

The $24 million Pipeline 5 Relining Project in Fallbrook is expected to conclude in summer 2019. Photo: San Diego County Water Authority

Pipeline Upgrades Coming to Fallbrook in Fall 2018

A major water pipeline that runs through rural North County is getting the water industry’s version of a makeover. The San Diego County Water Authority plans to start relining one of its regional wholesale water pipelines in fall 2018, extending its service life by more than 75 years. Construction is expected to last about one […]

Once the liners are installed, they are welded together, grout is injected to fill the space between the liners and the original pipe, and cement mortar is applied on the inside of the steel liner. Photo: SDCWA

Innovative Relining Program Reduces Cost, Extends Pipeline Service Life

When the San Diego County Water Authority installed major sections of 66- to 96-inch diameter pipelines in the 1960s, 70s and early 80s, the regional water wholesale agency used cost-saving pipeline material – a combination of steel wires, thin steel pipe, and concrete widely known as Pre-Stressed Concrete Cylinder Pipe (PCCP). Decades later, agencies around […]