Services affected


  • Wastewater

Content

    Annual Sanitary Sewer Cleaning & Inspection Contract

    Project Background

    In alignment with the principles of asset management, Utilities Kingston conducts annual sanitary sewer cleaning and inspection.  This is done to help ensure the long-term operational and structural integrity of the sewage collection system and to proactively schedule any required maintenance and/or rehabilitation.

    The objective is to inspect all of the City of Kingston's sanitary sewers over an approximate twelve-year cycle. Local and collector sanitary sewers (small and medium-sized, generally speaking) are covered over 2-five year projects.  Due to the heavy flows in the trunk sewers (generally speaking, the larger ones), a different program is used and is covered over 2-one year projects.

    The project includes two primary processes:

    1. Sewer Cleaning:  The sewers are cleaned by flushing with a high-pressure jet.  The jet is passed along the entire length of a sewer run (from maintenance hole to maintenance hole) several times by default, and more if additional cleaning is required.  Sewers are built typically with a design velocity that allows for self-scouring so normally, they do not require more than three or four passes.  However, if the sewers are found to have grease accumulations, calcite deposits, and/or gravel deposits from upstream construction or a main break, they may require considerably more passes to get them clean.
    2. Sewer Inspection:  The sewers are televised using a process called closed-circuit television inspection (CCTV).  A robotic camera is inserted into the pipe at one end, and it drives the length of the sewer run.  During this run, it records video.  When connections or defects are observed, the camera can pan and tilt to inspect the defect.  This results in a database of features and defects found along the sewer which can later be further analyzed to determine whether or not remedial measures are required, and with what level of urgency.

    Planning

    Design and Construction

    No design and construction is completed as part of this annual contract.

    Schedule and Project Downloads

    The schedule varies from year to year. The current portion of our inspection and cleaning cycle will focus on local and collector sewers for five years, from 2019 to 2023.

    If your property is located in the study area, you will receive a notice, hand-delivered by our contractor, approximately one week before the cleaning will commence.  It provides some basic instructions on what to do to best protect your home against some of the things that can happen as a result of the cleaning process (they are rare).  The cleaning and inspection work will take place appoximately one week later and, there will be no interruption to your wastewater service due to either activity. 

    Contacts

    If you experience any emergencies related to sewage during the weeks following your receipt of the notice, and believe it may be related to the project, please contact the workers outside on the street if you see them, or call the contractor directly (Tel# to be provided when contract is awarded in spring 2019).  Alternatively, contact Utilities Kingston's Inspector, Trevor Howden, at 613-888-4566 or call Customer Service at 613-546-0000.

    Utilities Kingston
    Trevor Howden
    Engineering Technologist
    85 Lappan's Lane
    Kingston, ON K7L 4X7
    Cell: 613-888-4566
    Office: 613-546-1181, extension 2338
    Email: thowden@utilitieskingston.com