Stormwater Pollution Prevention

Stormwater Systems


Throughout the West Valley, storm drains carry water from streets and yards to local creeks and on to the San Francisco Bay - without wastewater treatment.

Stormwater pollution occurs when pollutants accumulate on streets or other surfaces, and they are washed off by rainfall or water. The pollutants flow into storm drains, then directly into creeks and on to the bay. Stormwater pollution reduces water quality and affects the health of local creeks and the bay.

Residents contribute to stormwater pollution through everyday activities, like driving and gardening. Commercial and industrial activities can also be sources of pollution.

Reporting Violations


Report storm drain violations and illegal dumping online, or call:
  • City of Saratoga Public Works Department: 408.868.1258
  • West Valley Clean Water Program: 408.354.5385
Examples of violations you can report include:
  • Someone dumping substances into a storm drain
  • Foam, bubbles, or a milky appearance in a ditch or waterway
  • Strange odor coming from a storm drain 
  • Spilled or dumped auto fluids or chemicals on the street or into a storm drain
  • Wastewater piped to a creek or ditch
More information can be found on the West Valley Clean Water Program website.

Requirements for Development


Conditions of approval for development projects include the installation and maintenance of Best Management Practices (BMP's) for site design and storm water treatment, which must be designed per approved numeric sizing criteria. General guidance on the selection and implementation of BMP's and Storm Water Pollution Prevention Plans can be found on the California Storm Water Quality Association website and at the Santa Clara Urban Runoff Pollution Prevention Program website.

C3 Forms for Development Projects


Applicants with questions about stormwater regulations can contact Public Works staff.

Information Handouts

Additional Information