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2021 Annual Report
2021 Annual Report

2021 Annual Report

Diversification and


Major Rehab of Historic First Aqueduct Completed

A major rehabilitation project on the region’s historic First Aqueduct was completed in North San Diego County in January 2021. The project began in early 2019 and was one of the most complicated pipeline retrofits in the Water Authority’s history. The upgrades included replacing 14,500 linear feet of lining on the steel pipe sections of Pipeline 1, removing 16 associated structures and retrofitting 46 structures. Pipeline 1 delivered the first imported water to the San Diego region in 1947 and remains a vital part of the regional water delivery system. The construction contract for the project was worth approximately $30 million.

The project required coordinated shutdowns over two years in collaboration with member agencies and communities to ensure minimum impact to water users. The timely rehabilitation of the First Aqueduct was part of the Water Authority’s proactive asset management program. A key element of providing safe and reliable water supplies is continually assessing the agency’s 310 miles of large-diameter pipeline and making the upgrades necessary to continue serving the region.

“The First Aqueduct delivered imported water to our region for the first time more than 70 years ago, and it remains critical to water supply reliability for our region to this day. Through coordination throughout the Water Authority and collaboration with our member agencies, we completed this extraordinarily complex project to ensure these pipelines operate for generations to come. ”
Gary Croucher,
Board Chair
Water Authority