It's a very good point but I've just been doing things like plugging the shower and watering with that water, or using pasta water when I'm done with it. I like the idea of getting a raincatch now too. But that doesn't nullify your point, mine is also fairly small
Fwiw I saw on reddit that the city is also providing non-potable water to community gardens on request but I have no clue if that's true or not
https://www.reddit.com/r/Calgary/com...ater_for_your/