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    The tide gate structure has been seismically retrofitted and rehabilitated, featuring deeper foundations to withstand extreme seismic events, new barrier fencing, and a newly resurfaced top.
    The tide gate structure has been seismically retrofitted and rehabilitated, featuring deeper foundations to withstand extreme seismic events, new barrier fencing, and a newly resurfaced top.
    May 5, 2026
    Palo Alto Tide Gate Project Reaches Key Milestone

    Valley Water has reached a major milestone in extending the life of an important flood protection system in Palo Alto. In February 2026, the agency completed Phase 1 of the Palo Alto Flood Basin Tide Gate Structure Seismic Retrofit and Rehabilitation Project. 

    Read More
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    A home with a wooden deck and balcony is surrounded by a vibrant, drought-tolerant garden filled with colorful flowers like orange poppies, purple blooms, and green shrubs, with a stone pathway leading to the front door and a large tree in the yard.
    April 28, 2026
    Bring Your Dream Yard to Life This Spring!

    Spring is here, and it’s the perfect time to refresh your outdoor space. Imagine stepping outside to a yard that’s not only beautiful but also sustainable, a space filled with vibrant plants, smart irrigation, and features that save water and money. With Valley Water’s rebate programs, that dream yard is closer than you think!

    Read More
    Image
    A view of the tunnel entrance on the right, and the diversion outlet structure. The staged, 13-foot diameter pipe will be placed inside the tunnel and will connect to the diversion outlet structure. April 2026.
    A view of the tunnel entrance on the right, and the diversion outlet structure. The staged, 13-foot diameter pipe will be placed inside the tunnel and will connect to the diversion outlet structure. April 2026.
    April 27, 2026
    Anderson Dam Tunnel Project on track for completion in 2026

    The Anderson Dam Tunnel Project is entering its final stages, with Valley Water contractors completing key milestones such as the final concrete work inside the tunnel and installation of critical components. The project remains on track for completion in 2026.

    Read More
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  • South County Recycled Water Pipeline Project
  • Cross Valley Pipeline Extension Project
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  3. A3: Pipeline Reliability*

A3: Pipeline Reliability*

Image
Shannon Line Valve 2
Status
Active
Phase
Construction
Location
Saratoga, Cupertino and San José
Schedule
Start FY 2019 / Finish FY 2029
Funding
Safe, Clean Water Fund ($23.3 million)

This project constructs four (4) line valves at various locations along the East, West and Snell treated water pipelines in Saratoga, Cupertino and San José.

Continued from the 2012 Safe, Clean Water Program, this project will allow Valley Water to isolate sections of pipelines for scheduled maintenance and repairs following a catastrophic event, such as a major earthquake, and allow the network of emergency wells to operate, even when there is damage upstream and downstream of individual wells.

*This project was voter approved as part of the Safe, Clean Water and Natural Flood Protection Program.

This Project includes the construction of one line valve along the Snell Pipeline, two valves along the West Pipeline, and one line valve along the East Pipeline.  Installation of the four line valves is being scheduled in conjunction with the 10-Year Pipeline Inspection and Rehabilitation Program.  The construction of the final valve is scheduled to be completed in FY29.

In FY26 Q3 (January 1, 2026 – March 31, 2026), Valley Water completed installation of the West Pipeline valve near Quito Road in Saratoga, and continued construction activities for the West Pipeline line valve near Granada Avenue in Cupertino. 

Construction of the Snell Pipeline valve began in FY24; however, due to increased material lead times, installation could not be done in FY24 and was deferred to FY28 to align with the 10-Year Pipeline Inspection and Rehabilitation Program. The Snell Pipeline valve is now anticipated to be completed in FY29.

The 100% design documents for the four (4) line valves were completed in FY22.

April 2026

For more information:

  • Matthew Tan, (408) 630-2665
  • Project Questions: Aimee Green, Public Information Representative, (408) 630-2342

 

This Project includes the construction of one line valve along the Snell Pipeline, two valves along the West Pipeline, and one line valve along the East Pipeline.  Installation of the four line valves is being scheduled in conjunction with the 10-Year Pipeline Inspection and Rehabilitation Program.  The construction of the final valve is scheduled to be completed in FY29.

In FY26 Q3 (January 1, 2026 – March 31, 2026), Valley Water completed installation of the West Pipeline valve near Quito Road in Saratoga, and continued construction activities for the West Pipeline line valve near Granada Avenue in Cupertino. 

Construction of the Snell Pipeline valve began in FY24; however, due to increased material lead times, installation could not be done in FY24 and was deferred to FY28 to align with the 10-Year Pipeline Inspection and Rehabilitation Program. The Snell Pipeline valve is now anticipated to be completed in FY29.

The 100% design documents for the four (4) line valves were completed in FY22.

April 2026

For more information:

  • Matthew Tan, (408) 630-2665
  • Project Questions: Aimee Green, Public Information Representative, (408) 630-2342

 

No current documents. 

Safe, Clean Water Program Documents

  • FY25 Annual Report
  • All annual reports, annual IMC audit reports and independent audits

 

FY22-36 Key Performance Indicator for the Safe, Clean Water Program 

  1. Install 4 new line valves on treated water distribution pipelines. 

Benefits

  • Supports shorter service interruption in the case of a pipeline break.
  • Provides operational flexibility for pipeline maintenance work.
  • Improves drinking water reliability.
  • Reduces the amount of water released in streams in the event of a pipeline maintenance or repair

Geographic Area of Benefit

Mountain View, Sunnyvale, Santa Clara, Cupertino, Saratoga, Los Gatos, Los Altos, Campbell, San José and Milpitas 

About the Safe, Clean Water and Natural Flood Protection Program

In November 2020, voters in Santa Clara County overwhelmingly approved Measure S, a renewal of Valley Water’s Safe, Clean Water and Natural Flood Protection Program.

The program was first passed by voters in 2000 as the Clean, Safe Creeks and Natural Flood Protection Program, then again in 2012 as the Safe, Clean Water and Natural Flood Protection Program. The renewal of the Safe, Clean Water Program will continue to provide approximately $47 million annually for local projects that deliver safe, clean water, natural flood protection, and environmental stewardship to all the communities we serve in Santa Clara County.

While evaluating ways to improve the 2012 program, Valley Water gathered feedback from more than 21,000 community members. That helped Valley Water create the six priorities for the renewed Safe, Clean Water Program, which are:

Priority A: Ensure a Safe, Reliable Water Supply

Priority B: Reduce Toxins, Hazards and Contaminants in our Waterways

Priority C: Protect our Water Supply and Dams from Earthquakes and Other Natural Disasters

Priority D: Restore Wildlife Habitat and Provide Open Space

Priority E: Provide Flood Protection to Homes, Businesses, Schools, Streets and Highways

Priority F: Support Public Health and Public Safety for Our Community

Each year, Valley Water prepares a report providing a progress update for each of these program priorities, along with fiscal year accomplishments.

To ensure transparency and accountability to the voters, the ballot measure also created an Independent Monitoring Committee, appointed by the Santa Clara Valley Water District Board of Directors. The Independent Monitoring Committee annually reviews the program’s progress to ensure the outcomes are achieved in a cost-efficient manner and reports its findings to the Board. Additionally, the IMC also reviews each proposed 5-year implementation plan prior to its submittal for Board approval.

In addition, the program requires three independent audits.

View the Safe, Clean Water Program’s annual reports, annual IMC audit reports, and independent audits, including a staff response, on the Valley Water website.

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