Water that flows into the sewers from the surface (streets, yards, etc.) is referred to as stormwater. This includes rain and snow melt, but also excess water from watering your lawn.
In almost all areas of the city, stormwater drains into a separate sewer system that contains stormwater only. Since it is not contaminated to begin with, stormwater does not need to undergo the same treatment process as wastewater. Instead, it is channelled, via the storm sewer system, either directly into the North Saskatchewan River or into a stormwater management lake.
The main purpose of storm sewers is to drain surface water and prevent flooding. However, in some newer neighbourhoods stormwater management lakes also provide a secondary benefit - recreation.
Make sure that your lot drains effectively and meets City drainage standards by checking information about lot grading and on-site stormwater management facilities.
Drainage Services oversees all drainage on public property, and sets drainage standards for homeowners.
Drainage Services also regulates the use of stormwater lakes and promotes the careful, ecological use of the stormwater sewer system. You can enjoy boating and skating on stormwater lakes while caring for the environment at the same time, by following the guidelines provided for you on Stormwater Lakes - Recreational Activities webpage.