“Calgary residents who were unable to collect rainwater and are seeking non-potable water sources now have access to river water for pick-up. This complimentary river water is available for watering garden vegetables, flowers, and indoor and outdoor plants.
You can use any sort of container such as milk jugs, tubs, or gallon buckets. Keep in mind, water is heavy and the bigger the container the longer it takes to fill.
Clean and sanitize any containers used to store non-potable water before using them again with tap drinking water.
Here is where you can get non-potable water: