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B2: Interagency Urban Runoff Program*

About This Project

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

Valley Water 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 Valley Water 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.

Trash Hot Spot Clean Up and Sorting
On Target
Start FY 2014 / Finish FY 2028
Safe, Clean Water Fund ($13.0 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

  • Two trash booms are currently deployed in Lower Silver Creek and Thompson Creek. 

  • Trash booms in Matadero and Adobe Creeks managed by the City of Palo Alto were removed in December for the winter season as required by the joint agreement and are scheduled to be re-deployed in mid-April.

  • Valley Water staff regularly inspect trash booms while deployed, and trash is removed when needed.


  • Valley Water maintained North County partnerships through participation in the Santa Clara Valley Urban Runoff Pollution Prevention Program SCVURPPP. Valley Water staff chairs the Management Committee for SCVURPPP.

  • Valley Water staff represents SCVURPPP at the Bay Area Stormwater Management Agencies Association (BASMAA) and chairs the Bay Area-wide trash committee.

  • Valley Water staff serves on the California Stormwater Quality Association (CASQA) Board of Directors.

  • In December 2016, Valley Water, on behalf of SCVURPPP, was awarded a California Proposition 1 grant to develop a Stormwater Resource Plan (SWRP) for the Santa Clara Basin. The plan under the grant was approved by the State Water Resources Control Board. The SWRP is coordinated with Valley Water’s One Water Plan and stakeholders from the One Water effort are participating. For more information, visit the Valley Water's One Water Plan website. Please see the SWRP website for more information:

  • Valley Water maintained South County partnerships by participating in the South County Stormwater Coordination Committee. The committee includes representatives from Valley Water, the County, and the Cities of Gilroy and Morgan Hill.  The committee meets regularly to discuss pollution prevention, stormwater permit compliance, and other relevant issues.

Pollution prevention activities 

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

  • Pollution Prevention Activity #2: South County Nutrient Program
    Valley Water 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. Valley Water presented the analysis to the South County Stormwater Coordination Committee in 2018. Valley Water is currently developing follow-up actions to reduce nutrient loading in the Uvas/Llagas Watershed.
  • Pollution Prevention Activity #3: South County Storm Water Resource Plan
    Valley Water developed a Stormwater Resource Plan (SWRP) in collaboration with stormwater permittees in South County (Gilroy, Morgan Hill, and County of Santa Clara) to identify and prioritize Green Stormwater Infrastructure (GSI) opportunities that could be eligible for funding. The SWRP is a planning document that uses a map-based approach to identify and prioritize local and regional GSI projects that can be implemented to improve local surface-water quality through enhanced stormwater management. GSI reduces the quantity and improves the quality of water flowing into our creeks, while also providing other possible benefits, including groundwater infiltration, flood attenuation, aesthetics, reduction in heat islands, and other community benefits. The South County Stormwater Resource Plan is available here. Online versions of the maps provided in the plan can be accessed at

Updated July 2020

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 Valley Water 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, 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.