Water and Sewer Availability Certificates


The Water and Sewer Availability Questionnaire must be filled out for all water and sewer availability certificate request.  A site plan shall be included for home additions and new development.  Incomplete applications will not be accepted.

Use the City of Woodinville certificate form if the property is in the City limits.  All other areas shall use the King County certificate form.

Submit the completed application and the check together for processing to the Woodinville Water District.


The cost per certificate request is $80.00 each:

  • Water = $80
  • Sewer = $80

Only cash or check made payable to Woodinville Water District is accepted.