DonW
R.I.P.
"waste" water seems not very accurate a term, I assume its just the water that is rejected from the tap with the TDsolids still in that water, the same water we aer already drinking (if not tapping from RO pre DI for drinking).
So unless the filtration process "ADDS" something to the water that is "wasted" why cant it be used for any other use in house? I found a thread that some use it for thier FW aquariums, which I am considering. as well as laundry dishes pets etc...
If you have a toilet near your ro the easiest is a rodi powered toilet. The hook up is simple and allows manual use when you need it.
Don