Ross Valley Sanitary District collects a Sewer Service Charge on each property that is connected to the District’s sewer system. Property owners receive the annual sewer service charge on their property tax bill, which is collected by Marin County and appears on Marin County Property Tax Statements.
Be aware that while your sewer fee appears as one charge on your tax bill, the fee actually funds two separate and independent organizations: Ross Valley Sanitary District, which provides the collection system that delivers wastewater to the treatment plant, and Central Marin Sanitation Agency, which treats wastewater before pumping it into the San Francisco Bay.
If you have any questions regarding your sewer service charge, please contact NBS at 1-800-676-7516 or email NBS by clicking the link.
Please note: not all parcels with an address in Larkspur pay the "Larkspur Rate". Parcels north of Corte Madera Creek (e.g., in Greenbrae, Drake’s Landing and Larkspur Landing) and in Riviera Circle pay the Ross Valley rate and a portion of their property tax goes to the District for its capital program funding.
Ross Valley Rate Zone - Fiscal Year 2022/23
Larkspur Rate Zone - Fiscal Year 2022/23
If you believe that you have been billed incorrectly for the Sewer Service Charge, you may request a refund within 3 years of the date of the charge in question. View the refund request form by clicking the link.