I've been running the water into a 5-gallon bucket to wait for warm water for a shower. The gallon and a half or so that I collect is used for flushing water. I've done this for decades. We had to completely quit watering our lawn with the new(er) water restrictions in southern California, because the only way we were going to get a 20% reduction was to do so. I have contemplated building a cistern that takes runoff from the street gutter, because of all the runoff from other people's sprinklers, and using that for flush water. Leaves and all. 
If you get to thinking you’re a person of some influence, try ordering somebody else’s dog around.
