• Sanitary District 5: Serving Tiburon and Belvedere, CA

    Sanitary District 5: Serving Tiburon and Belvedere, CA

    The District serves over 3,500 households, collecting, processing, and treating wastewater in accordance with State and Federal Regulations under a National Pollution Discharge Elimination System Permit.

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Sani5 News


Report on May 13, 2008 Discharge Event

On May 13, 2008 between 12:00 a.m. and 7:00 a.m. the main treatment facility located at 2001 Paradise Drive released 67,500 gallons of water into Raccoon Straits in the usual method.  However, the discharged water had undergone only Primary treatment and Disinfection, not the usual Secondary treatment.  Under our NPDES Permit, releasing water with only primary treatment is allowed only during extreme wet weather.  Therefore, the District immediately notified the State Office of Emergency Services, Regional Water Quality Control Board, Directors of Environmental Health, Marin County Department of Health Services and the County Public Health Officer.  Within thirty minutes of reporting, warning signs were placed along the Bay notifying the public to stay out of the water.


New Paradise Cove Treatment Plant

Paradise Cove's new self-contained wastewater treatment plant is slated for delivery and installation in June and will replace an existing plant that is currently twenty years older than it's projected twenty year service life. The new 'plant' is actually two plants that will operate in tandem, increasing capacity, reducing the load on any single plant and also facilitating regular preventative maintenance. One plant can stay on-line while the other is undergoing maintenance.

Kudos to the District's staff for keeping the existing Paradise Cove plant operational and incident-free for over forty years!

The engineering firm responsible for installation of the new plant had planned to use a helicopter to deliver the equipment, but our ever vigilant District Manager, Bob Lynch, convinced them that he could have it delivered by barge at significantly less expense and without the disturbance to the neighborhood that the helicopters would have created. This saved the District between $60,000 and $80,000.


Smoke Testing of Sanitary Sewer Lines

Sanitary District No. 5 will be performing smoke testing of its collections system on September 28, 2009 and will continue testing through September 30, 2009 from 9:00 a.m. to 2:00 p.m. Smoke testing of sanitary sewer collection systems was initiated in 1961 at McPherson, Kansas.

The Environmental Protection Agency endorses smoke testing as a way to identify where infiltration of storm water into the collection system, may be occurring. (Usually roof drains or storm drains plumbed to the collection system.) Smoke testing uses no explosive material and will leave no visible residue.

The District will start testing in the Belvedere Zone along the following streets. Lower Beach Road, all of San Rafael Ave, Leeward, Windward, Edgewater, Lagoon Road andPeninsula Road.

During the testing period, do not be alarmed if you see smoke emanating from a storm or roof drain.

Please contact the District Office at 435-1501 if you have any question or concerns.

Sewer Emergencies

24 Hours

(415) 779-9048

Dial 9-1-1 if public health or property is threatened.

Our Mission

Sanitary District No.5 of Marin County is a special District, which while meeting or exceeding all applicable local, state and federal laws and regulations, is dedicated to the protection of public health and the environment through effective and economical collection, conveyance, treatment and disposal of wastewater.