Date of Formation: September 26, 1988 (currently inactive)

Enabling Legislation: Section 25210.1 et seq. of the CA Government Code

Services Provided: Facilitates the public acquisition of a privately owned water utility and the transfer of responsibility for water service in Montara and Moss Beach to the Coastside County Water District. Has been inactive following legislative authorization in 1991 for the Montara Sanitary District to provide water service to the same area.

Area: Approximately 7.5 square miles

Population: 5,500 (as of 1987)

Sphere of Influence: Zero (dissolution)*

Communities Served: Unincorporated Moss Beach and Montara

Board of Supervisors

County Service Area No. 12 (Montara/Moss Beach) is governed by the San Mateo County Board of Supervisors, which is composed of five members elected to four-year terms by the public in their respective districts (see FIND YOUR DISTRICT on the Board of Supervisors website).

District Supervisor Term Ending
1 Dave Pine 2024
2 Noelia Corzo 2026
3 Ray Mueller  2026
4 Warren Slocum 2024
5 David Canepa 2024

The Board of Supervisors meets regularly the second and fourth Tuesday of every month.

All meetings are held at the Board of Supervisors’ Chambers, 400 County Center, Redwood City, CA 94063

Meeting time is 9:00 am unless otherwise noted in the agenda. Future agendas are posted one week prior to the meeting date.

County Service Area
Contact Information
County Service Area No. 12 (Montara/Moss Beach)
Department of Public Works, County of San Mateo
555 County Center, 5th Floor
Redwood City, CA 94063Get Directions
Monday - Friday:
8:00 am - 5:00 pm
Saturday - Sunday:
Contact Information
General Inquiries (day and after hours): (650) 363-4100 Phone: (650) 599-1489 Fax: (650) 361-8220 Email: Email:

*LAFCo sphere policy indicates: "An existing local agency may be allocated a zero sphere of influence, which encompasses no territory. Such may be the case where LAFCo determines, after due consideration of all factors, that the public service responsibilities and functions of one local agency should be reallocated to some other unit of government and that, ultimately, the local agency which has been assigned a ‘zero sphere of influence’ should cease to exist."