OneShoreline’s Request for US Army Corp of Engineers to Begin Analysis of Federal Interest for Storm Flooding of the Sewer Authority Water Treatment Plant Looks Promising for 2025

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POWERPOINT. From the OneShoreline Directors meeting’s CEO Report on Monday, August 26th, 2024 at 4:00pm as a hybrid meeting. OneShoreline or San Mateo County Flood and Sea Level Rise Resiliency District



More on Sewer Authority Mid-Coastside’s Flooding on Coastside Buzz


Sewer Authority Mid-Coastside (SAM) Meetings ~ 2nd & 4th Mondays @ 7:00pm

SAM Agendas and Zoom Links

Subscribe to Agendas. Watch remotely. Comments and questions by email.

SAM Meeting Videos via Pacific Coast TV

Real Life Sewer Plant Tours

Where Does Your Poop Go ~ Virtual Video Tour!

Interactive “Story Map” Tour

Contact Us

Our regular office hours are 7:00 a.m. through 4:00 p.m., Monday through Friday, excluding holidays. The Authority can be reached 24-hours a day at:

(650) 726-0124

Our Address is:

Sewer Authority Mid-Coastside
1000 Cabrillo Hwy N.
Half Moon Bay,  CA  94019

(650) 726-7833 (fax)

The Sewer Authority Mid-Coastside (SAM) provides wastewater treatment services and contract collection maintenance services for a population of approximately 24,000 in the following areas:

  • City of Half Moon Bay
  • El Granada
  • Miramar
  • Montara
  • Moss Beach
  • Princeton by the Sea

SAM Directors

SAM is a joint powers authority (JPA) created by its three member agencies: City of Half Moon Bay (City), Granada Community Services District (GCSD), and the Montara Water and Sanitary District (MWSD).

The JPA is a separate, independent, public agency created by the member agencies to perform functions and share powers common to the member agencies. Those powers are outlined in a joint exercise of powers agreement (Agreement). The Agreement creating SAM can be found on the Documents page.

Each Agreement identifies how the independent agency will be governed. In the case of SAM, each member agency appoints two members from its governing board to represent it on the SAM Board of Directors, for a total of six directors.

The Agreement also establishes the weight of each director’s vote. The vote by each representatives from the City is given the weight of two votes. The vote by each representative from GCSD and MWSD is given the weight of one vote. The total number of possible votes is eight. A quorum is a minimum of five votes and resolutions require at least six votes to pass.

2024 SAM Directors

Kathryn Slater-Carter Board Secretary, Representing the Montara Water & Sanitary District

Barbara Dye Chair, Representing the Granada Community Services District

Deborah Ruddock Director, Representing the City of Half Moon Bay

Deborah Penrose Director, Representing the City of Half Moon Bay

Peter Dekker Treasurer, Representing the Montara Water & Sanitary District

Matthew Clark Director, Representing the Granada Community Services District


OneShoreline meets the 4th Monday of most months: OneShoreline ~ San Mateo County Flood and Sea Level Rise Resiliency District Meeting

Board of Directors

County Supervisors:

  • At-Large Dave Pine – Chair
  • District 3 Ray Mueller

City Representatives:

  • Coast: Debbie Ruddock – Vice Chair
  • North: Donna Colson
  • Central: Adam Rak
  • South: Lisa Gauthier
  • At-Large: Marie Chuang
Coastside Buzz
Author: Coastside Buzz

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