Side Sewer Connection

Here are some things to consider when having your property connected to the sewer system. This is not an all-inclusive guide, and your situation may require other considerations that are not covered by this guide. Please refer to the Side Sewer Installation Handbook for more information.

Connection Requirements & Tips

Work on property can be done by the property owner. Work in the ROW must be done by a licensed and bonded contractor.

  • The City of Spokane allows the construction of side sewers to only be performed by a State of Washington licensed and bonded contractor or by the owner of the property. If a homeowner wants to perform the installation, they must first call 509.625.7900 to schedule a consultation with a City of Spokane Wastewater Inspector.
  • All installations require a sewer connection permit issued by the City of Spokane. Other permits, such as interior plumbing alterations and right-of-way permits, may be required. All necessary permits must be obtained prior to commencement of any part of the installation. The property owner may obtain the permit(s), but we recommend that the contractor performing the work take out the permit. If the property owner is going to obtain the permit(s), the contractor’s name and registration number must be provided. If you have questions regarding the permit process, please contact Developer Services at 509.625.6342.

Hiring a Side Sewer Contractor

The City of Spokane suggests that you obtain at least three (3) bids. Listed below are some of the basic items that you should discuss with contractors preparing a bid for you. There may be other items or situations not covered by this guide.

  • When comparing contractor bids to select the low bidder, make sure all bids were for the same services, materials and items of work.
  • Is the bid for estimated or for actual costs? What is the cost of unforeseen work?
  • What method of construction will be used; open trench, bored, or a combination of both?
  • Make sure the bid is for connecting “all necessary building drains.”
  • Check to see if the contractor has included “all necessary permits” in his bid.
  • The City of Spokane will pump your septic tank at no charge to you at the time of elimination.
  • Does the bid stipulate that all work shall meet City of Spokane standards?
  • Ask the contractor if the “stub” is deep enough to make all necessary connections by gravity? If not, does the bid include ALL costs for installation and connection via a pump, including the electrical permit?
  • Does your property already have a dry side sewer? Is it connected to the main in the street? Is it deep enough to serve your building by gravity?
  • Is the contractor going to be responsible for replacing and/or repairing any sprinkler systems that he may damage during the course of work? If so, to what extent?
  • How, when, and to what extent will the contractor restore areas disturbed or damaged during the course of the work? Will the contractor cut, roll, and replace the existing sod or install new sod?
  • Does the contractor require a down payment or deposit? Is it non-refundable?
  • Does the contractor provide a warranty on the work? For how long?
  • Make sure all items/services are covered in a written contract, including the warranty period.
  • Can you break your contract for any reason?
  • Can the contractor provide you with references of previous sewer installations?
  • All work, whether performed by a licensed contractor or by the property owner, must be in compliance with the Washington State Department of Labor & Industries’ safety requirements.

Please contact City of Spokane Wastewater at 509.625.7900 if you have any questions about hiring a contractor to install your sanitary sewer connection.

Utility Pipe Diagram

Utility Pipe Rehabilitation Program

Are you a City of Spokane homeowner with a damaged water or sewer pipe between your house and the utility connections in the street? The City’s Utility Pipe Rehabilitation Program may provide the help you need. The program offers low-interest loans to assist qualified property owners in repairing or replacing damaged water and sewer lines, providing an affordable solution. Learn more about the program online.


Contact Information

City of Spokane Wastewater
509.625.7900