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Underground Flow Equalization System

UFES Work Hour Update – December 3, 2021

After-Hours Work Approved for December 8 through 10, 2021

After-hours work related to the UFES project has been approved by the City of San Mateo for up to two nights between Dec. 8 and 10, 2021. To install the sewer main on Delaware, the nearby high-pressure PG&E gas line needs to be uncovered and monitored during sewer installation. This work will require closure of northbound S. Delaware Street at Saratoga Drive. Through-traffic will be detoured between 28th Avenue and Saratoga Drive. This work has been scheduled during the evening to lessen the impact on daytime traffic. No additional noise, dust, or vibration impacts are expected from this work. Signs will be posted if this work results in additional traffic pattern changes.

For more information, and to subscribe to receive UFES project updates and text alerts as construction progresses, please visit our UFES page. You can also email, or call the UFES hotline at 1-650-522-7250.

*Construction schedules are subject to change

Stay Connected with the UFES Project

The Clean Water Program’s UFES construction is well underway and we want to keep you informed. The team established multiple information channels for residents and business owners to stay connected.

  • Sign up for construction alerts (text the word UFES to 1-833-321-0231), email us at or call our hotline at 1-650-522-7250.
  • You can also visit our UFES project page to see project details and sign up for our e-newsletter. If you don’t want to opt in, but still want information, bookmark the link where we post our updates to the project website.