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Join us for a virtual neighborhood meeting on Monday, September 25, at 6 p.m. to learn more about the
El Camino Real Sewer Capacity Improvement Project.

To join the Zoom Meeting visit:  ǀ  Webinar ID: 833 0498 3783  ǀ  Passcode: 581889
or join by phone: 1 (408) 638-0968  ǀ  Webinar ID: 833 0498 3783

Have Questions? Email:

El Camino Real Sewer Capacity Improvements

Project Type: 


Approximate Construction Start & End Dates:

Early 2024 – Early 2025

Project Status:

The bidding process has commenced and the project is planned to be awarded in Fall 2023.

Project Locations:

The project work will be performed in three areas.

Area One:

  • W 25th Ave at El Camino Real
  • Flores St between W 25th Ave and W 28th Ave
  • W 28th Ave between Flores St and Juniper St
  • Juniper St between W 28th Ave and W 29th Ave

Area Two:

  • El Camino Real southbound from north of Hillsdale Intersection to W 36th Ave
  • 36th Ave between El Camino Real and Colegrove St
  • Colegrove St between 36th Ave and W 39th Ave

Area Three:

  • El Camino Real southbound between W 38th Ave and W 42nd Ave

Basin 2 and 3 location map

Project Description:

The purpose of the Basin 2 & 3 Collection System Upgrade is to improve the ability of the overall wastewater collection system to manage sewer flows during heavy seasonal rainfall. These improvements will help prevent sewer overflows, as well as help the City comply with regulatory requirements. During heavy rains, the wastewater collection system capacity is overwhelmed by the amount of rainwater that enters the system through infiltration and inflow. This causes sewer overflows at locations around San Mateo, such as at manholes. These overflows contaminate city streets, creeks, lagoons, beaches, and the San Francisco Bay.

The El Camino Real Sewer Capacity Improvements project involves installation of sewers that total approximately 7,800 linear feet of pipe, including new and upsized relief sewers and installation of manholes. The upgrades will reinforce the system with additional capacity, helping to reduce sewer overflows.

Separate notifications will be sent prior to the start of construction to alert property owners and occupants.

Key Project Contact:

CWP Project Manager: Makarand Pendse, 1-925-392-3726,