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Water Main Rehabilitation Project: University Mound Reservoir to 3rd Street

Overview

Critical upgrades to a 24-inch water main are planned, running from University Mound Reservoir South to 3rd Street.

The project will primarily use a trenchless method, called Cured-In-Place Pipe (CIPP) to rehabilitate water mains that are nearly 90 years old. This entails lining the pipe to restore its strength and extend its service life. Learn more about the lining process at sfpuc.gov/NewWaterMains.

Water main upgrades are planned for:

  • Bacon Street between Bowdoin Street and Bayshore Boulevard
  • Phelps Street between Egbert Avenue and Vesta Street 
  • Williams Avenue between Vesta and Neptune streets 
  • Neptune Street between Williams and Thornton avenues 
  • Thornton Avenue between Neptune and 3rd streets

Construction Look Ahead*

Week of November 9

  • Excavating pits and removal of small segments of pipe to prepare for trenchless pipe lining 
    • Williams Avenue between Vesta and Neptune streets
    • Neptune Street between Williams and Thornton avenues
    • Thornton Avenue between Neptune and 3rd streets
  • Cleaning pipe to prepare for lining
    • Bacon Street between Bowdoin and Goettingen streets
    • Phelps Street between Egbert and Donner avenues

Week of November 16

  • Excavating pits and removal of small segments of pipe to prepare for trenchless pipe lining  
    • Thornton Avenue between Neptune and 3rd streets
  • Cleaning pipe to prepare for lining
    • Bacon Street between Goettingen Street and Bayshore Boulevard
    • Phelps Street between Egbert and Donner avenues
  • Steel spool installation to prepare for lining
    • Bacon Street between Bowdoin and Goettingen streets

Week of November 23

  • Steel spool installation to prepare for lining
    • Bacon Street between Bowdoin and Goettingen streets

*Work schedule and locations subject to change

  • Construction Start: July 2026
  • Construction End: October 2027
  • Project Phase: Construction