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(650) 321-0384

If you have a sewer emergency or sewer related problem, please Call Us First, day or night at (650) 321-0384. Our reporting line is open 24/7. Thank you! 


Purpose of Sewer Service Charge.

The purpose of the sewer service charge is to raise revenue for the costs of maintenance, operation,construction, and reconstruction of the District’s wastewater facilities used for the collection, conveyance, treatment, and disposal of wastewater, including the District’s share of the cost of construction, operation, and maintenance of the Silicon Valley Clean Water (SVCW)  wastewater facilities, and for other expenditures deemed necessary by the District Board in order to conduct the business of the District, except to the extent prohibited by Sections 5471 and 6520.5 of the Health and Safety Code of the State of California.

Basis of Charge.

The basis of the sewer service charge is the establishment of a flat rate for the residential customers and a unit cost per hundred cubic feet for non-residential customers, computed to reflect costs of collection,treatment and disposal of sewage. Residential Customers pay a flat rate for sewer service charges that applies for the fiscal year July 1 through June 30.

Please Note: In no event shall any non-residential customer be charged less than the residential customer flat rate charge.

The following are the most current rates for the West Bay Sanitary District.  

Residential (per Dwelling Unit)


Single Family, Multi-Family $1,306
On-site Wastewater Disposal Zone $2,226

Commercial (per CCF)


Retail/Commercial $10.52
Institution/Public $9.85
Restaurants $22.16
Supermarkets with Grinders $22.41
Hospitals $10.88
Hotels with Dining Facilities $17.89



Flow rate (per CCF) $7.76
BOD (per pound) $1.37
TSS (per pound) $1.56

Increased Use of Sewers: Non-Residential

In the event increased use is or will be made of the sewer, and the actual, calculated, or estimated volume of wastewater discharge exceeds or will exceed the volume of wastewater discharge the premises are entitled to discharge, an additional sewer connection charge shall be paid. The additional sewer connection charge shall be calculated by subtracting the wastewater discharge entitlement assigned to the parcel from the actual, calculated or estimated volume of wastewater discharge, measured in gallons per day, average daily flow and multiplying the remainder by the non-residential connection charge rate.

Pdficonsmall Info on Capacity Discharge Assessment

Pdficonsmall Sewer Rate Study – February 9, 2022

Pdficonsmall Sewer Rate Study – February 18, 2021

Pdficonsmall Sewer Rate Study  – April 23, 2020

Pdficonsmall Staff Report, Sewer Rate Study FY 2019/20, 218 Notice of Public Hearing

Pdficonsmall Sewer Rate Study – April 25, 2018

Pdficonsmall Sewer Rate Study – March 8, 2017

Pdficonsmall Sewer Rate Study – March 16, 2016

Pdficonsmall Sewer Rate Study – April 22, 2015

Pdficonsmall Sewer Rate Study – April 23, 2014

Pdficonsmall Sewer Rate Study – February 13, 2013

Pdficonsmall Sewer Connection Fees – Current

Pdficonsmall Commerial Sewer Conn Fees

Pdficonsmall Sewer Connection Fees – Effective July 1, 2022

Pdficonsmall Sewer Connection Fee Final Report April 1, 2022

Pdficonsmall Master Fee Schedule 2024


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Open Weekdays

Monday – Friday

Office Hours

8:00am – 4:00pm

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(650) 321 – 0384


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