How much waste you have depends on your set up. I went with a regular 75gpd for a year until I learned about the dual membrane set ups The waste water that leaves the first membrane feeds into a second membrane so rather than be immediately discharded it gets filtered and used again). I takes a booster pump to work but saves 50% water and makes the RO water twice as fast as a single 75 gph membrane set up. LOVE it!Originally Posted by DarkHorseMBA
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