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2012 A3: Pipeline Reliability Project*

About This Project

This project constructs 4 line valves at various locations along the East, West and Snell treated water pipelines in Saratoga, Cupertino and San José. This will allow Valley Water to isolate sections of pipelines for scheduled maintenance and repairs following a catastrophic event, such as a major earthquake.


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

Shannon Line Valve
Planning and Design
Saratoga, Cupertino and San José
Start FY 2019 / Finish FY 2026
Safe, Clean Water Fund ($11.9 million); Water Utility Enterprise Fund 1
News and UpdatesNews and Updates
Reports and DocumentsReports and Documents
Environmental and Community BenefitsEnvironmental and Community Benefits
History and BackgroundHistory and Background
News & Updates

Planning and Design Updates

Planning and design commenced December 2019. 

The 100% design documents for the line valve on Snell Pipeline have been completed. The 60% design documents for the line valves on the West Pipeline have been completed.

 The following design review meetings were held:

  • January 27, 2021 – West Pipeline at Santa Clara Distributary 60% design review
  • January 28, 2021 – Snell Pipeline 90% design review
  • March 3, 2021 – West Pipeline between Rainbow and Mann 60% design review

 Updated April 2021

For more information:

Reports & Documents

No current documents. 

Environmental & Community Benefits

Key Performance Indicator for the Safe, Clean Water Program 

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


  • Supports shorter service interruption in the case of a pipeline break.

  • Provides operational flexibility for pipeline maintenance work.

  • Improves drinking water reliability.

Geographic Area of Benefit

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

History & Background

About the Safe, Clean Water and Natural Flood Protection Program

In November 2012 the voters of Santa Clara County overwhelmingly approved Measure B, the Safe, Clean Water and Natural Flood Protection Program, as a countywide special parcel tax for 15 years with a sunset date of June 30, 2028. This Program replaced the Clean, Safe Creeks and Natural Flood Protection Plan, which voters approved in November 2000.

The Safe, Clean Water Program was developed with input from more than 16,000 residents and stakeholders and was created to match the community’s needs and values. The voters of Santa Clara County identified five priorities:

Priority A: Ensure a Safe, Reliable Water Supply

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

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

Priority D: Restore Wildlife Habitat and Provide Open Space

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

Other: Six projects from the Clean, Safe, Creeks Plan have been carried forward into the Safe, Clean Water Program.  

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.

In addition, the Program requires three independent audits, the first of which was conducted in FY 2017.

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.