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B2: Interagency Urban Runoff Program*

About This Project

This project supports the District’s continued participation in the Santa Clara Valley Urban Runoff Pollution Prevention Program (SCVURPPP) and South County programs that help the District reduce stormwater pollution and meet regulatory requirements to reduce contaminants in surface water.

The District also participates in the regulatory development process related to stormwater by providing review, analysis and commentary on various basin plan amendments, Total Maximum Daily Loads (TMDLs) and water bodies listed as impaired or threatened under the federal Clean Water Act. Project B2 also allows the District to maintain regional public education and outreach activities to help prevent urban runoff pollution at the source.


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

On Target
Start FY 2014 / Finish FY 2028
Safe, Clean Water Fund ($12.6 million); Watershed and Stream Stewardship Fund, Water Utility Enterprise Fund
News and UpdatesNews and Updates
Reports and DocumentsReports and Documents
Environmental and Community BenefitsEnvironmental and Community Benefits
History and BackgroundHistory and Background
News & Updates

The project is on schedule and within budget.

Trash capture devices

  • Trash booms are currently deployed in Lower Silver and Thompson creeks.  The City of Palo Alto removed the two booms in Palo Alto in December 2018 (collecting approximately 0.5 cubic yards of trash), per the agreement between the City and the District.  They will be redeployed in April.District staff regularly inspects the booms. The District removed 10 cubic yards of trash from the Thompson Creek boom in December 2018. The Lower Silver Creek boom was vandalized beyond repair in August and replaced in October 2018. The District removed and characterized 2 cubic yards of trash from the Lower Silver Creek boom in November 2018, with plastic bottles being the most prevalent item.


  • The District maintained North County partnerships via the Santa Clara Valley Urban Runoff Pollution Prevention Program (SCVURPPP). District staff chairs the Management Committee for SCVURPPP.

  • The District chairs the Bay Area-wide trash committee. The District participated in developing a receiving waters trash monitoring program plan, which was approved by the San Francisco Regional Water Quality Control Board. SCVURPPP agencies, including the District, began receiving waters trash monitoring last wet season (2017-18). 

  • In December 2016, the District, on behalf of SCVURPPP, was awarded a California Proposition 1 grant to develop a Stormwater Resource Plan for the Santa Clara Basin. Work is on schedule for the grant. The District, in addition to managing the grant, participates on the Technical Advisory Committee for the plan development. The work under the grant is on schedule per the agreement with the State Water Quality Control Board. A final draft report was submitted to the State Board. The Stormwater Resource Plan is coordinated with the District’s One Water Plan and stakeholders from the One Water effort are participating. For more information, visit the District's One Water Plan website. Please see the Stormwater Resource Plan website for more information:

  • The District maintained South County partnerships by participating in the South County Stormwater Coordination Committee.

Pollution prevention activities 

  • Pollution Prevention Activity #1: South County Pajaro River Watershed Pathogen and Microbial Source Tracking Study
    District staff completed field monitoring in April 2016, assisted in further monitoring of pathogen sources, and prepared a final project report 
    (Pajaro River Watershed Microbial Source). For a summary of the report, please see here

  • Pollution Prevention Activity #2: South County Nutrient Program
    The District performed a spatial analysis of South County agricultural parcels to identify farms at high risk for nutrient and pesticide pollution. The prioritization considered a robust collection of attributes, including, but not limited to, predicted nitrate concentrations in shallow groundwater, crop and irrigation type, and soil erosivity. The District presented the analysis to the South County Stormwater Coordination Committee. The District is currently developing follow-up actions to reduce nutrient loading in the Uvas/Llagas Watershed.


Updated January 2019 

For more information:



Thompson Creek Trash Boom Clean Up on March 19, 2018, removing approximately 5 cubic yards of trash.




Palo Alto Boom at Matadero Creek on July 26, 2017



Environmental & Community Benefits

 Key Performance Indicators for the Safe, Clean Water Program 

  1. Install at least 2 and operate 4 trash capture devices at stormwater outfalls in Santa Clara County. 

  2. Maintain partnerships with cities and County to address surface water quality improvements. 

  3. Support 5 pollution prevention activities to improve surface water quality in Santa Clara County, either independently or collaboratively with South County organizations.


  • Uses partnerships with municipalities and local agencies to reduce contaminants and improve surface water quality in our streams, reservoirs, lakes and wetlands

  • Maintains District compliance with Regional Water Quality Control Board and National Pollutant Discharge Elimination System (NPDES) permits

  • Allows continued participation in SCVURPPP and South County urban runoff programs

  • Promotes stormwater pollution prevention through public outreach

Geographic Area of Benefit 



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, the District 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 District website.