Costco Zero Waste RO unit?

Discussion in 'Equipment' started by Vincerama2, Jun 1, 2011.

  1. sfsuphysics

    sfsuphysics Supporting Member

    Be careful, while I will agree RO "waste" water is cleaner than the water you drink (in certain ways), the fact that it goes through the carbon means that it won't be chlorinated, while when drinking this is a good thing, storing over long periods of time is a definite bad thing as it could be a breeding ground for bacteria. So the water itself might be good, just make sure in your earthquake preparedness you also have some way of sterilizing water :D

    I happen to have a 300g rubbermade in the backyard where all my waste water goes... it's good for it's purpose, and I put a few fish in there to deal with mosquitos... and a net over the top to keep raccoons out.. and... yeah I'll be adding bleach to it in case of being thirsty after an earthquake :D
     
  2. scuba71

    scuba71 Supporting Member

    So I am going to be the guy that admits to owning one of these babies. I've owned this unit for almost 4 years, and have had zero issues with Plumbing, water heater and even water quality (which I check regularly). All I can say is that it works. My TDS coming in is ~ 300-400 TDS. My out is about ~5-30 depending on the water quality that day. I also run the out water through a DI for the tank only. I ended upgrading the membrain to 100GPD, and that has been working flawlessly.
     
  3. GreshamH

    GreshamH Guest

    Your product is 5 to 30? To me that means a failure at removal. I never allow mine to get above 0.
     
  4. sfsuphysics

    sfsuphysics Supporting Member

    5-30 after the RO I suspect.

     
  5. GreshamH

    GreshamH Guest

    My output post membrane/pre DI still never gets that high (1 - 2) and I'm on well water now. TDS is a whole nother ball game when you can actually see turbidity :lol:
     
  6. sfsuphysics

    sfsuphysics Supporting Member

    whats your TDS pre-membrane? 1-2 seems awfully low unless you have stellar water to start with. Rejection rates of RO membranes is only about 95-98% IIRC, so if you're getting 1-2 post membrane, that means 40-100 going into the thing.

    5-30 from 300-400 doesn't sound too far off.
     
  7. GreshamH

    GreshamH Guest

    keywords... well... visually high turbibidity. I know of no local well that has lower TDS then the munis. You seem to forget the prefilters take stuff out so my membrane isnt nailed with the full tds of the well.
     
  8. sfsuphysics

    sfsuphysics Supporting Member

    that's why I asked your pre-membrane numbers, that way you can take out all unknowns like how much your prefilters remove.
     

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