San Diego

Accessibility Tools

  • Check if your spelling is correct, or try removing filters.
  • Remove quotes around phrases to match each word individually: "blue drop" will match less than blue drop.
  • You can require or exclude terms using + and -: big +blue drop will require a match on blue while big blue -drop will exclude results that contain drop.

Alvarado 2nd Pipeline Extension Project

Alvarado Alignment Map


The City of San Diego provides water to 1.4 million residents each and every day through hundreds of miles of pipelines, and these underground pipelines need maintenance and replacement as they reach the end of their lifespans. The Alvarado 2nd Pipeline Extension Project will extend and replace aging water pipelines to improve water reliability and distribution in San Diego, focusing on efficient water delivery to the City’s coastal communities.

Project Overview

The Alvarado 2nd Pipeline Extension Project includes the construction of approximately 10 miles of water mains in the Mission Valley and Mission Bay areas. New 24 and 48-inch transmission mains will be installed along Friars Road, between Interstate 805 (where it connects to the existing Alvarado Pipeline) and West Mission Bay Drive (where it connects to the recently installed Pacific Beach Pipeline). A new 36-inch transmission main branch will be installed at Napa Street for future connection to the Morena Pipeline, which will be constructed after this project. A new pressure reducing station will be installed near Friars Road in a City-owned parking lot. A 12-inch distribution main will be replaced along Sea World Drive, between Interstate 5 and West Mission Bay Drive. Additionally, a 16-inch distribution main will be replaced along Friars Road where it is parallel to the new Alvarado 2nd Pipeline transmission main.

Project Schedule

This project is currently in the design phase, with construction anticipated to begin in 2022.

Informational Materials

PDF icon Alvarado 2nd Pipeline Extension Project Fact Sheet (2021)

PDF icon Alvarado 2nd Pipeline Extension Project Overview Presentation (2021)


Contact Us

For questions or concerns about the Alvarado 2nd Pipeline Extension Project, call the project hotline at 619-533-4199, email Alvarado2nd@sandiego.gov or submit your inquiry online to the CIP general inquiry page.