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Q. How are my sewer charges calculated? 

A. Your annual sewer direct charges are based on up to four factors:

  1. Annual fixed charge - Based on water meter size per property.
  2. Annual usage charges - Based on water use by property during bi-monthly billing periods of November/December + January/February each year.
  3. Debt service charge - Per property for repayment of debt for construction of the sewer system. 
  4. High strength surcharge - For commercial/industrial uses whose wastewater strengths exceed threshold values for influent loading to the treatment plant.
Q. When does my sewer bill come out? 

A. Annual sewer charges are included on the property tax bill from Sonoma County and are paid along with your tax bill.

Q. What do I do if I have a water or sewer problem? 

A. First, make sure that you and those around you are safe then call our office at (707) 887-1551.  During business hours staff will take down the relevant information and send an operator to assist.  After hours, call the number above and select prompt #1 for our on-call staff.  


Ord. 61 - Sewer Lateral Adopted 11.14.17.PDFOrd. 65 (Amending Ord. 60) Master Fee Schedule 11.13.18.pdfOrd. 71 Disconnection Policy-Amending Ord. 64 (Adopted 1.14.20 Signed).pdfOrd. 75 Leak Adjustment Amend Ord. 69 (Adopted.pdfOrd. 76 Water rate increase (adopted 5.11.21).pdfOrd. 76 Water rate increase (adopted 5.11.21).pdfOrd. 77-New SSZ Direct Charges Rates FY 2021-2.pdfRes _151 - Service to more than 1 structure.pdfRes _399- Rescinding Res 257 (Water Connect Fe.pdfRes #421 - Amend #151 Multi (adopted 7.12.22).pdf