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B2: Inter-agency Urban Runoff Program*

About This Project

This project supports Valley Water’s continued participation in the Santa Clara Valley Urban Runoff Pollution Prevention Program (SCVURPPP) and South County stormwater programs. These programs enable Valley Water to reduce stormwater pollution through technical support and regional leadership. In addition, this project supports stormwater pollution prevention activities in South County Watersheds and green stormwater infrastructure (GSI). GSI allows rainwater runoff from roads, parking lots and other impervious surfaces to soak into the ground and be filtered by soil rather than discharge into storm drains that transport the water to creeks.

The project allows Valley Water to participate in the regulatory development process  related to stormwater by participating in stormwater permit re-issuance and providing review, analysis and comments on various water quality regulatory efforts. This project also allows Valley Water to collaborate with local agencies on public education and outreach activities to help prevent urban runoff pollution at the source.

Multi-benefit projects, such as green stormwater infrastructure, are important strategies to address water quality. Green infrastructure uses plants to soak water into the ground, which slows down, spreads and helps absorb rainwater instead of having it go down a storm drain. This improves water quality, can increase groundwater supplies and reduces peak flows to a creek.


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

Trash Hot Spot Clean Up and Sorting
Start FY 2022 / Finish FY 2036
Safe, Clean Water Fund ($19.8 million); Watershed 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

Trash capture devices

  • There are four trash capture devices (booms) operated in Santa Clara County
    • Thompson Creek upstream of Tully Rd., San José
    • Lower Silver Creek near King Rd. and Schulte Dr., San José
    • Matadero Creek upstream of West Bayshore Rd., Palo Alto
    • Adobe Creek downstream of East Bayshore Rd., Palo Alto
  • The City of Palo Alto manages the trash booms in Matadero and Adobe Creeks under an agreement with Valley Water, which was recently extended for an additional ten years and modified to allow the booms to remain deployed all year long.
  • Trash booms managed by the City of Palo Alto in Matadero and Adobe Creeks are currently deployed under the joint agreement.
  • The trash booms currently deployed in Thompson Creek and Lower Silver Creek are managed by Valley Water.
  • Valley Water regularly inspects trash booms while deployed, and trash is removed as needed, and as safety and environmental conditions allow.

Municipal stormwater compliance program

  • Valley Water is maintaining the program as required by the Municipal Regional Stormwater National Pollutant Discharge Elimination System (NPDES) Permit (MRP).
  • The most recent MRP became effective July 1, 2022 and will remain in effect through at least June 30, 2027. Valley Water continues to review practices and procedures to ensure compliance with permit provisions, and also collaborates with local and regional partners to satisfy regional requirements.
  • Valley Water submitted the FY 2022-2023 Municipal Regional Stormwater Annual Report to the Water Board in September 2023. The report can be found in the Reports & Documents section of this webpage.


  • Valley Water maintains North County partnerships through participation in the Santa Clara Valley Urban Runoff Pollution Prevention Program (SCVURPPP). Valley Water staff chairs the SCVURPPP Management Committee.
  • Valley Water participates in various regional stormwater workgroups in cooperation with SCVURPPP and other countywide stormwater organizations.
  • Valley Water maintains South County partnerships by participating in the South County Stormwater Coordination Committee. The committee includes representatives from Valley Water, Santa Clara County, and the cities of Gilroy and Morgan Hill. The committee meets regularly to discuss pollution prevention, stormwater permit compliance, and other relevant issues.
  • Valley Water facilitates and moderates the Pajaro River Watershed Bacteria TMDL Workgroup, which consists of arranging and facilitating meetings, coordinating agendas, recording meeting minutes for the participating agencies, and assisting in comment letter development to Central Coast Water Board staff.
  • Valley Water serves on several California Stormwater Quality Association (CASQA) subgroups with representatives from around California dealing with stormwater issues of common concern.

Stormwater Quality Improvement Activities

South County Pet Waste Outreach

  • Valley Water continues to work with Santa Clara County and the cities of Morgan Hill and Gilroy to conduct the South County Pet Waste Outreach project. The most recent effort included the production of postcard-sized outreach materials for distribution at local veterinary clinics, boarding facilities, pet stores, and outreach events in Morgan Hill and Gilroy. For FY24, Cities of Morgan Hill and Gilroy continue to distribute the remaining post-card sized outreach materials from FY23 to the identified facilities and outreach events. Additionally, the City of Morgan Hill is developing an animation video for electronic distribution in FY24.

South County Nutrient Program

  • Valley Water conducted a spatial analysis of South County agricultural parcels to identify farms at high risk for nutrient and pesticide pollution in an effort to reduce nutrient loading in the Uvas/Llagas Watershed. The analyses, funded by the 2012 Safe, Clean Water Program, considered a robust collection of attributes, including predicted nitrate concentrations in shallow groundwater, crop and irrigation type and soil erosivity. Valley Water continues to evaluate the next steps to implement projects alongside South County Partners and Central Coast Regional Water Board Staff.

April 2024


For more information:







Environmental & Community Benefits

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

  1. Address trash in creeks by maintaining trash capture devices or other litter control programs.

  2. Maintain Valley Water’s municipal stormwater compliance program and partner with cities to address surface water quality improvements, including participation in at least three (3) countywide, regional, or statewide stormwater program committees to help guide regulatory development, compliance, and monitoring.

  3. Support at least one (1) stormwater quality improvement activity per 5-year implementation period in Santa Clara County, including providing up to $1.5 million over 15 years to support implementation of green stormwater infrastructure consistent with Santa Clara Basin and South County Stormwater Resource Plans.


  • Partners with municipalities and other agencies to reduce contaminants in stormwater and improve surface water quality in our streams, reservoirs, lakes and wetlands

  • Maintains Valley Water compliance with the Regional Water Quality Control Board requirements in National Pollutant Discharge Elimination System (NPDES) permits

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

  • Allows Valley Water to help direct required monitoring efforts in ways that benefit Valley Water programs and projects

  • Promotes stormwater pollution prevention

  • Facilitates collaboration with partners on stormwater projects that provide multiple benefits and support Valley Water’s mission

  • Addresses climate change

Geographic Area of Benefit 



History & Background

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 Plan, 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.