I got the same unit you did Carey and I measured it this weekend making water and is a a 1 to 3 ratio. For 1 gal
I got 3 gal
of waste. Luckily my water is free with my rent and with only a 20 gal
tank to supply I will not use much at all. By plumbing the RO
unit to my storage vat with the float valve it will only refill when I do a water change and such, and then it will only be replacing what I use.