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VIDEO. From the Sewer Authority Mid-Coastside meeting on Monday, May 12th, 2025 at 7:00pm, as a hybrid meeting.
Public Comment
Response from SAM Board
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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
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

SAM Board from left. Paul Nagengast (HMB), Nancy Marsh (GCSD), Scott Boyd (MWSD), Debbie Ruddock (HMB), Barbara Dye (GCSD), Kathryn Slater-Carter (MWSD).
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.
2025 SAM Directors
Deborah Ruddock ~ Chair, Representing the City of Half Moon Bay
Kathryn Slater-Carter ~ Vice Chair, Representing the Montara Water & Sanitary District
Nancy Marsh ~ Secretary/Treasurer, Representing the Granada Community Services District
Barbara Dye ~ Director, Representing the Granada Community Services District
Paul Nagengast ~ Director, Representing the City of Half Moon Bay
Scott Boyd ~ Director, Representing the Montara Water & Sanitary District


More on MWSD on Coastside Buzz
Montara Water and Sanitary District (MWSD) Meetings ~ 1st & 3rd Thursdays @ 7:30pm
MWSD Agendas and Meeting Links
If you experience technical difficulties or have technical questions prior to or during the meeting, please contact MWSD’s IT support at (650) 728-7843.
Meeting Videos
Meeting Schedule
Regular meetings are 7:30pm on the first and third Thursday of each month. They used to held at the District office at 8888 Cabrillo Hwy, next to Pt Montara Lighthouse and Hostel.
To receive agendas by email, send a request to mwsd@coastside.net
In addition to email, we post agendas before each board meeting:
- On the District website here
- Montara post office
- Moss Beach post office
- the bulletin board in front of the MWSD office
Who is on the Board of Directors?

All Board members may be reached by sending an email to info@mwsd.net.
Services
Sewer Authority Mid-Coastside (SAM) – MWSD is a member of SAM, the agency that collects and cleans our Coastside community’s wastewater before it enters the ocean. SAM meets monthly on the 4th Monday at 7:30pm. Jim Harvey and Scott Boyd presently serve as SAM board members.
Recology of the Coast – MWSD has contracted with Recology of the Coast for trash pickup, recycling, and waste hauling.
Visit County Solid Waste Department for more information about recycling, composting, etc.
In an Emergency
Water Emergencies: Call MWSD at (650) 728-3545
Sewer Emergencies: Call SAM at (650) 726-0124
For emergencies that affect life, health or safety: Dial 911
Contact Us
- 8888 Cabrillo Hwy
Montara, California 94037 - Office Hours:
8:30AM to 5PM Mon-Fri - (650) 728-3545
- mwsd@coastside.net
Note: Public participation is not permitted during closed session discussion items.

MSWD General Manager Clemens Heldmaier showing a creek filtration system.
