I appreciate all the input on this thread, even though it wasn't my original post. LOL. I saw our local conservation department had a learning event at the library last year about how to do these rain barrels to collect rainwater for gardening, etc. I think I'm going to sign up for one if it's offered again and see about this. We're on a well, so the water I go through doesn't "cost" me in utilities except for the electricity when the well pump kicks on. But our water is liquid rock. So then I run a RO unit to cut down my well water to acceptable parameters. The waste coming out of the RO unit is atrocious, and I can't measure the environmental cost of how much water I go through. And every time I run my RO unit, I kick myself and think there has to be a better way to do this. Even if I can only collect rainwater during our rainy months in March-June or November, it's still an offset to all the wasteful usage currently!