• 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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3/16/2020 - 4/7/2020

Dear valued customers,

As government agencies and communities continue to work together to reduce the spread of the COVID 19 virus, Sanitary District No. 5 of Marin County has made the decision to cease office operations involving direct contact with the public, until April 7th, 2020, at which time management will determine if it is in the best interest of the health and safety of staff to reopen the office to the public.

Treatment and testing of sewage as well as maintenance of District equipment will continue as normal. We will still be taking calls and responding to emergencies.

We understand that this may be disruptive to our customers, but the health and safety of our staff as well as our community is paramount.

If you need to contact District staff, please contact the office via phone at 415-435-1501.

Thank you for your understanding as we work together to fight this pandemic. 

With regards,

SD5 Management




New SD5 Partnership with Lystek Bio-solids Management


Lystek-Fairfield Organic Material Recovery Center Adds Additional Bay Area Customers for Advanced Biosolids Management  

Agreements Allow the Mt. View Sanitary District and Sanitary District No. 5 of Marin County to Diversify Their Annual Biosolids Planning  

Attention: Environmental, agricultural, municipal, recycling & waste management reporters/editors March 10, 2020 – Fairfield, CA | Cambridge, ON – For Immediate Release | Lystek is excited to announce that it has reached Agreements with two Bay Area wastewater agencies to manage a portion of their annual production of biosolids. Mt. View Sanitary Agency (Martinez, Contra Costa County, CA) and Sanitary District No. 5 of Marin County, CA will deliver biosolids to Lystek. The Fairfield-Suisun OMRC provides advanced processing and management solutions to municipal agencies in the San Francisco Bay area at its state-of-the-art facility and converts them into LysteGro®, a US EPA, Class A biofertilizer product.  These agencies have been searching for alternative biosolids management solutions since the recently passed legislation which will restrict the placement of biosolids and organics in landfills. To offer a sustainable solution to generators in the San Francisco Bay area, Lystek entered into a unique, P3 style partnership with the Fairfield-Suisun Sewer District to develop the Lystek OMRC. This facility opened in August 2016, and since then has received and processed over 100,000 tons of biosolids. The center utilizes Lystek’s patented and proven, low-pressure Thermal Hydrolysis Process (LystekTHP®) to convert biosolids and other organic materials into LysteGro Class A biosolids fertilizer. LysteGro is also licensed by the California Department of Food and Agriculture (CDFA) for use as a bulk fertilizer and accepted as an agricultural product by the Solano and Yolo County Departments of Agriculture.  Area growers highly value LysteGro because it offers an affordable, nutrient-rich product that is also high in vital, organic matter for sustaining and building soil health. These factors eliminate many of the previous barriers and prohibitions imposed on traditional use of Class B biosolids.  


Lystek International is a leading provider of biosolids and organics management solutions across North America with their proven technology – Lystek THP®. The award-winning Lystek THP system processes organic feedstocks to product a multi-purpose, hydrolyzed product including LysteGro®, a concentrated liquid, nutrient-rich Class A biosolids fertilizer, LysteMize®, a digester enhancement process that increases volatile solids reduction and biogas production, and LysteCarb®, an alternative carbon source for biological nutrient removal. Lystek works with public and private customers to transition WWTPs to advanced resource recovery centers with solutions that are affordable, energy-efficient, easy to operate, and enhance sustainable biosolids processing and management operations.   For more information, please contact:  James Dunbar, General Manager & Business Development Manager for Lystek International at:  Cell: 707.419.0084 | Office: 707.430.5500 x 1 | Email: This email address is being protected from spambots. You need JavaScript enabled to view it. 




Upcoming Night Time Work this Friday Morning

Date: September 23, 2019
To: Neighbors of the SD5 Main Plant
From: Tony Rubio - District Manager/Chief Plant Operator
Subject: Upcoming Night Time Work this Friday Morning
In the District’s continued effort to protect public health and the receiving waters of the State of California, the District has been required to perform a cleaning activity during the low-flow hours of the night and into the early morning (between 11pm -5am), on an annual basis as preventative maintenance.
This annual preventative maintenance activity includes the cleaning of the grit chamber located at the front of the treatment plants office located at 2001 Paradise Drive. The grit chamber cleaning is accomplished via high-powered vactor trucks that operate to vacuum out all of the settled debris that has been deposited at the bottom of the chamber. If this activity is not performed on schedule, the District runs the risk of damaging plant equipment by allowing this debris to flow in to the plant uncontrolled.
The District understands that our neighbors closest to the plant – those in the Point Tiburon Bay Side Association, those located directly above us on Centro and Diviso streets, and those on Paradise Drive on the bay-side of the plant – may be affected by the noise and light emitted from the cleaning project.  The District is providing this courtesy notice to you, our Neighbors, to warn of our upcoming mandatory annual (only once/year) activity, which ensures the safe and continued efficient operations of the SD5 Main Plant.
The cleaning activity will begin on Thursday, September 26, 2019, starting at 11 p.m., continuing through 6 a.m. on Friday, September 27, 2019.
Please contact Tony Rubio, District Manager (415.435.1501, at ext. 106), with any questions.
We greatly appreciate your understanding while we conduct this required, preventative maintenance at Sanitary District No. 5’s Main Plant.


The purpose of this notice is to inform you and your neighbors of an upcoming construction project in your area that will improve and rehabilitate the sanitary sewer system. The 2019 Sewer Rehabilitation Project for Tiburon and Belvedere was sent out to bid in May of 2019. The Board of Directors for Sanitary District No. 5 has awarded the project to Glosage Engineers, Inc., and the construction project is expected to begin the first two weeks of August. The duration of the project will be approximately 16 weeks. Please be assured that construction at or near your property, however, will only occur for a small portion of that time.

Approximately 4,300 feet of old vitrified clay pipe is being replaced. In some places, the existing sewer is located in an easement behind the homes in others the existing sewer is located in the roadway. The sewers are being replaced by the pipebursting method which replaces the existing buried pipeline by pulling a polyethylene pipe with an expander head through the existing pipe without the need for a conventional construction trench. There will be some digging where your individual sewer lateral connects to the existing sewer.

The work will involve mechanical or hand digging to connect the lower laterals to the new sewer main. The work areas will be covered with plywood or similar material and barricaded off. The District's  contractor will work with each property owner in determining where the sanitary facilities are located. Any paved, concreted or landscaped areas affected by the project will be restored as nearly as possible to the pre-construction conditions.

When your lower lateral connection is dug near the sewer main, there will be a cost-effective opportunity for you to hire the contractor to televise your upper lateral and view its condition. Since the connection is exposed, your upper lateral can be replaced at this time at your expense for a lower cost than you would pay if you did this work as a standalone project. We urge you to avail yourself of this opportunity to replace your lateral at a greatly reduced cost. You may contact the contractor at (510) 815-4505

The construction will be inspected by Nute Engineering for Sanitary District No.5. If you have any questions or concerns, please contact Mark Wilson at (415) 453-4480, ext. 208.

Download the full letter from Tony Rubio, District Manager



Sanitary District No. 5 of Marin County cordially invites family and friends

to attend a memorial ceremony honoring the late Randy Armbruster, a

devoted member of the SD5 Team for over 30 years.

A commemorative, bronze plaque will be dedicated in Randy’s memory on

Wednesday at 3:00 PM, on July 11th, 2018,

at the newly renovated Tiburon Pump Station # 5.

Please be advised, Tiburon Pump Station #5 does not have a formal address.

TPS#5 is located approximately one block east on Mar West Street from

the Mar West/Tiburon Boulevard intersection, on the left.

We welcome everyone who wishes to attend.


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.