Subventions et des contributions :

Subvention ou bourse octroyée s'appliquant à plus d'un exercice financier (2017-2018 à 2018-2019).

Stormwater is rainfall and snowmelt that runs off land into separate storm sewer (separated from sewage) orx000D
combined sewer systems (potentially mixed with sewage). Urbanization has decreased quality and increasedx000D
quantity of stormwater runoff, negatively impacting receiving waters while often overwhelming existingx000D
municipal sewer infrastructure. Municipal stormwater management options include source control (controllingx000D
release into sewers), collection and conveyance (sewers); and end-of-pipe (treated/untreated). In terms ofx000D
quality, stormwater has high concentrations of pollutants such as nitrogen, phosphorus, organic matter,x000D
bacteria, viruses, metals, oil, grease, salts, etc. In terms of quantity, stormwater management is complicatedx000D
given the impacts of climate change with increased precipitation leading to sewer waters backing up ontox000D
roadways and into homes/businesses, creating traffic problems and financial/insurance issues. As well,x000D
exposure to these potentially toxic waters poses a human and environmental health risk.x000D
Overall, research is needed to help improve the stormwater management and treatment infrastructure inx000D
Saskatchewan and the rest of Canada. Particularly, research is needed to create economically viable solutions tox000D
provide at least primary treatment (settling of solids) for separate stormwater sewers prior to its release into thex000D
receiving environment. The City of Sasktoon (City) is the largest municipality in Saskatchewan with separatedx000D
stormwater sewers with over 100 outfalls, many being directed without treatment to the South Saskatchewanx000D
River (SSR). The City acknowledges the need to better understand the impacts of these outfalls on the SSR andx000D
to identify the key outfalls to focus on for future infrastructure improvements. It is expected that regulationsx000D
will eventually be passed that will create the need for stormwater treatment, thus, this research project objectivex000D
is to determine the impacts of stormwater outfalls on the SSR and to assess the potential for improved Cityx000D
municipal stormwater management in anticipation of these regulations.