San Pedro Creek and Pacifica State Beach Bacteria TMDL


San Pedro Creek and Pacifica State Beach are listed on the Clean Water Act 303(d) list of impaired water bodies due to high indicator bacteria levels (e.g., total coliform, fecal coliform, enterococcus, and E. coli). High indicator bacteria levels indicate presence of pathogenic organisms that are found in warm-blooded animal (e.g., human) waste. Pathogens pose potential health risks to people who recreate in contaminated waters. The San Pedro Creek and Pacifica State Beach indicator bacteria TMDL was initiated to address the current impairment of recreational beneficial uses in these water bodies.



Overhead view of San Pedro Creek watershedView of Pacifica State Beach


Electronic versions of the following documents are available upon request. However, in accordance with Section 11546.7 of the California Government Code, electronic versions cannot be posted online as they do not meet specified accessibility standards. For an electronic copy of the order, please contact the staff person listed at the bottom of this web page.

U.S. EPA Approval

  • The U.S. Environmental Protection Agency approved the TMDL on August 1, 2013, and the Basin Plan amendment became effective on this same date. The State Office of Administrative Law approved the Basin Plan amendment for this TMDL on June 24, 2013. (Click here to view approved Basin Plan amendment).

State Water Board Approval Process

San Francisco Bay Regional Water Board Adoption Process

  • The Water Board adopted the Basin Plan amendment for this TMDL on November 14, 2012
  • Notice of Public Hearing and notice of filing a Draft Environmental Document for the San Pedro Creek and Pacifica State Beach Bacteria TMDL. Comment period was closed on October 8, 2012.(Please see below for project documents).
  • May 23, 2012: Water Board staff held a public workshop and California Environmental Quality Act (CEQA) scoping meeting at the Pacifica Community Center. (click here to view public notice for this meeting).

Project Documents

Please Join Our Mailing List

The Water Board maintains an email notification list for this TMDL. To ensure you receive future information on this TMDL, we encourage you to subscribe to this list. The email list for this project is called: “Pathogens in Pacifica Beaches and San Pedro Creek (San Mateo County).” The instructions for subscribing to the list are provided on the subscriptions page, which you can reach by clicking here.

For more information contact:
Farhad Ghodrati
Environmental Scientist
San Francisco Bay Region
1515 Clay Street, Suite 1400
Oakland, CA 94612
Phone: 510-622-2331
Fax: 510-622-2460