Pumping Stations

A pumping station is a component of the sanitary sewage collection system that conveys domestic and other suitable sewage to a sewage treatment facility. The need for pumping sewage arises in the following situations:

• The existing topography and required minimum sewer grades create deep sewers.
• When the sewage is raised and then conveyed by gravity.
• Basements are too low to discharge sewage to the main sewer.
• Sewage must be conveyed over a ridge.
• The sewage must be raised to get head for gravity flow through a treatment plant.
• Discharge outlets are below the level of the receiving body of water.
• An existing gravity system is not yet available. A pumping station enables development and growth in accordance with the applicable community plan.

The City of Orillia sanitary sewer system consists of 20 sanitary sewage pumping stations. Four of the larger stations are equipped with standby generators in case of power interruption.

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