San Joaquin Valley 
Stormwater Quality Partnership




On December 8, 1999, the US EPA promulgated regulations, known as Phase II, requiring small Municipal Separate Storm Sewer Systems (MS4s) to obtain permits for storm water discharges. The local agencies in San Joaquin County had submitted Stormwater Management Plans (SWMP) and permit applications to the California State Water Resources Control Board.

In accordance with the Stormwater Management Plans, each agency was required to implement Best Management Practices (BMPs) to reduce pollutants in storm drainage.

A cost is associated with each BMP. The six agencies had met and formulated a cost sharing agreement in order to provide shared cost savings for residents.

Typical items related to implementation of the programs that was eligible for cost sharing included, but was not limited to:
  • Consultant services
  • Water testing for Permit Compliance
  • Shared Equipment
  • Special Programs and Events
  • Advertising
  • Printing
The first six San Joaquin Stormwater Quality Partnership (SJSWQP) Group members were:
  • City of Lathrop
  • City of Lodi
  • City of Manteca
  • City of Ripon
  • City of Tracy
  • San Joaquin County

The cost sharing agreement for the National Pollutant Discharge Elimination System (NPDES) Permit Phase II Program with the above six agencies was signed and authorized in 2003.

Since our partnership is growing very fast due to a successful cooperation, the partnership group have decided to expand its horizon to San Joaquin Valley.

As of December 2011, the number of the partnership members has been grown from 6 to 19. The more Phase I and Phase II Communities in San Joaquin Valley will be invited to SJVSWQP Group.

The SJVSWQP has been growing very fast and successfully because we all have made a good teamwork!


The San Joaquin Stormwater Quality Partnership (SJSWQP) Group has worked all together very efficiently and effectively.

Now, we are expanding our horizons from the San Joaquin County area to the San Joaquin Valley for serving more people and for better effectiveness!
  • Work together to comply with the new Stormwater Permit criteria effectively

  • Work together on the Public Outreach Activities, e.g., radio ads, cinema ads, YouTube ads, etc.

  • Keep updating short & long term goals on stormwater quality improvement and its applications

  • Participate in local public outreach programs, e.g., pumpkin fairs, Earth day events, school activities, etc.

  • Serve the Public in the most optimized and effective way!

We will be able to achieve the goals on the Better Environment with our efforts, experiences, and knowledge.

"Let's Expand Our Horizons!"

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