With the upcoming legislative changes regarding cannabis, police planners are constantly being asked for information, data and projections on cannabis use and impact on policing. Get the most recent data from Statistics Canada at https://www150.statcan.gc.ca/n1/pub/13-610-x/13-610-x2018001-eng.htm.
Another source to check with is your local public health unit. Some units across Ontario are conducting local studies on cannabis use and may be able to provide your Police Service with more detailed and community specific information.