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.

View looking north of the First Aqueduct right of way in Valley Center. Photo: Water Authority

Historic Pipeline Project Boosts Long-Term Water Reliability

San Diego County Water Authority crews successfully completed the first of three coordinated shutdowns of the First Aqueduct in early March to launch a major renovation of dozens of structures on two pipelines, including the historic Pipeline 1 that first delivered imported water to the region in 1947. The series of shutdowns was carefully planned […]

A wooden dam helped allow Operations and Maintenance crews to make repairs to a leaking pipeline valve. Photo: Water Authority Dewatering project

Quick Solution Keeps Pipeline Repairs on Track

When Water Authority crews began dewatering part of the region’s pipeline system for a 10-day shutdown in mid-November, they discovered a leaking valve that threatened to disrupt the time-sensitive operation. At issue was a six-foot diameter valve in the Second Aqueduct that was designed to isolate a section of pipeline so workers could safely make […]

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

Pipeline 5 Upgrades Begin in Fallbrook

A $25.3 million Pipeline 5 relining project is under way in North County to improve the reliability of the San Diego region’s water delivery system. The project involves rehabilitating approximately 2.3 miles of one of the San Diego County Water Authority’s regional wholesale water pipelines in eight segments along a 9.5-mile stretch through the community […]

L.H. Woods working on one of its first projects for the Water Authority in 1960. Photo: Courtesy L.H. Woods

L.H. Woods & Sons Honored for 60 Years of Enhancing Region’s Aqueducts

After 60 years of work upgrading the San Diego regional aqueduct system, Vista-based L.H. Woods & Sons, Inc. was honored by the San Diego County Water Authority’s Board of Directors upon completion of the company’s final project under local ownership for the Water Authority. The Board formally marked the successful conclusion of the $28.6 million […]

The Water Authority is increasing its commitment to innovation by hosting technology-focused forums and looking for new tools to help operate and maintain the region's water infrastructure. Photo: Water Authority

Agency Embraces Innovation at Technology Showcase

San Diego, Calif. – Welcome to the future. That’s the message from the San Diego County Water Authority, which is developing and deploying cutting-edge techniques to maintain its 310 miles of giant pipes that provide water for 3.3 million residents across the region. “This is all about assessing the condition of our pipelines through the […]

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 […]