I played with ideas for a few months just to try and not waste so much. I got a 100 gallon rubbermaid container and used it to hold all the waste water, then used that for pretty much anything I could think of except to drink. I used it to do laundry, rinse the skimmer, water plants, flush toilets, you name it. Lot of bucket hauling. I can tell you that, (per the utility bill) I cut my water usage by about a third, but it was a big pain in the neck. (Not to mention that I annoyed the heck out of my girlfriend, can't blame her, you wouldn't believe the nonsense I subject her to). I have since bought a more efficient RO/DI unit, but now I only use a 30 gallon container to catch waste for other usage, and when that is full the rest goes down the drain.