Welcome to
Sewer Authority Mid-Coastside

The Sewer Authority Mid-Coastside (SAM) provides wastewater treatment services and contract collection maintenance services for a population of approximately 30,000 in the following areas:

MWSD Sewer Replacement

Starting May 18: MWSD Sewer Replacement – 3rd Street between East and La Conte Montara Water and Sanitary District (MWSD) along with Sewer Authority Mid-Coastside (SAM) staff have been working to clear a sewer blockage and perform emergency sewer repairs along 3rd Street between East Avenue and La Conte Avenue in Montara. To reduce future impacts to the area, MWSD is proceeding with a full sewer rehabilitation on 3rd Street between East Avenue and La Conte Avenue.

MWSD contractors will start Monday, May 18th and expect to remain onsite for up to three weeks (through early June). Work hours are 8AM to 5PM. More information can be found here

Emergency Sewer Issues

SAM CALENDAR

August 10 2026 7:00 pm: Regular Board  Meeting 

August 20 2026 10:00 am: Finance Committee Meeting 

August 24 2026 7:00 pm: Regular Board Meeting 

August 26 2026 1:00 pm: Board Operations Meeting

Direction to Plant