If you've been shopping, you're probably aware you'll need a booster pump.....
units produce roughly 3 gallons of waste water per gallon of filtered, so a 75gpd unit will use about 12.5 gallons per hour total.... far less
than filling a bathtub or washing machine. Plus, the "waste" water doesn't have to go down the drain.... it can be used for many other things. I typicaly restock my RODI
water when I have to do laundry, running the waste line into the washing machine, just remember to set a timer so the machine doesn't overflow (did it ONCE!!)
. During the summer, the waste can be used for garden watering, pool top-off, etc.