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Our Mission:

Work to provide public safety, environmental protection, efficient customer service, and to safeguard the interest of the general public and property owners, present and future by maintaining compliance with state and federal laws concerning the discharge and elimination of nonpoint source pollution.

What's New

QSP/QSD Training July 19-21, 2011 click What's New for more information.

National Pollutant Discharge Elimination Permit (NPDES) Municipal Stormwater Permit

The Clean Water Act requires municipalities to obtain a NPDES permit to prevent the discharge of pollutants from Municipal Separate Storm Sewer Systems.

Under the NPDES permit program there are two different NPDES Municipal Stormwater Permits:

  1. Phase I Permit- The Phase I Permit requires medium and larger (populations with 100,000 or more) municipalities to obtain NPDES permit coverage for their stormwater discharges.
  2. Phase II Permit- The Phase II Permit requires small MS4s to obtain NPDES permit coverage for their stormwater discharges.

Both the Phase I and the Phase II permit contains requirements for public education and outreach; illicit discharge detection and elimination; construction and post-construction; and good housekeeping for municipal operations. Phase I permits typically include requirements to conduct chemical monitoring while Phase II permit do not.

The County of Santa Clara is required by the CWA to obtain coverage under the NPDES Municipal Stormwater Permit. In California the Regional Water Quality Control Boards are authorized to issue NPDES permits. The County of Santa Clara is located within two Regional Water Quality Control Boards. The northern portion of the County eventually drains to the San Francisco Bay while the southern portion drains to the Monterey Bay (Please see the map attached below to the boundaries of two regional water quality control boards). The County of Santa Clara is required to obtain a NPDES permit under each Regional Water Quality control Board.

Watershed Map

See related articles at the bottom of the page:

Clean Water Program: What Is the Program?
Clean Water Program: Common Pollutants
Clean Water Program: Erosion Prevention and Sediment Control

Region 2: San Francisco Bay

The northern portion of the County eventually drains to the San Francisco Bay and is under the jurisdiction of the San Francisco Bay Regional Water Quality Control Board. This portion of the County has been under a NPDES Municipal stormwater Phase I Permit since 1990. The County of Santa Clara participates in the Santa Clara Valley Urban Runoff Pollution Prevention Program (SCVURPPPP) to address the many of the requirements of the Municipal Regional Permit.

See related articles at the bottom of the page:

Clean Water Program: Santa Clara Valley Urban Runoff Pollution Prevention Program

Region 3: Central Coast

The Southern portion of the County eventually drains to the Monterey Bay and is under the jurisdiction of the Central Coast Regional Water Quality Control Board. This portion of the County obtained a NPDES Municipal Stormwater Phase II permit in 2010. The County of Santa Clara works jointly with the City of Morgan Hill and the City of Gilroy to address many of the requirements found in the Regional Stormwater Management Plan to meet the requirements of the General Permit for the Discharge of Storm Water from Small MS4s.

Revised Regional Stormwater Management Plan

The County of Santa Clara, the City of Morgan Hill and the City of Gilroy meet monthly to discuss the implementation of the Stormwater Management Plan. These meetings are held on the second Tuesday of each month at 3:30 at the City of Morgan Hill Public Works Department at 100 Edes Court Morgan Hill, CA. If you would like to receive more information about these monthly meetings and receive monthly agendas please use the link below to join the interested parties list.

Model Agenda

Join Interested Parties List

Illegal Dumping/Discharging in or Near Storm Drains

Only clean water may bed allowed to flow into a storm drain. Illegal discharges include, for example: pesticides, wash waters, sewage, automotive fluids, paint, construction materials and wastes, sediment and/or silt, and food wastes.

When to Report an Illegal Dumping/Discharging Incident?

  • When you see a person dumping anything into the storm drain.
  • When you notice unusual odors in or near the storm drain.
  • When you see dumped wastes and materials in or near the storm drain.

To report an illegal dumping/discharging call (408) 918-3400

Public Outreach Events and Public Participation Activities

The Department of Parks and Recreation's website contains information on volunteer events, special events and many more events. For more information, click here.

The Department of Environmental Health's website more information on common household hazardous waste, which includes pesticide disposal and recycling, fluorescent bulb drop-off locations, electronic waste recycling and much more. For more information, click here.

The Integrated Waste Management program's website contains additional information on Bay friendly gardening, home composting and much more. For more information, click here.

Related Articles: