NU Aqua Efficiency Series Tankless 600GPD Reverse Osmosis System 2:1 Pure To Waste - WS

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Sale Price:
Sale price$442.95 Regular price$589.95


120 Day Satisfaction Guarantee

Purchase with confidence! All Nu Aqua Reverse Osmosis Systems come with a 120 Day Satisfaction Guarantee. If you're not satisfied with your system in 120 Days send it back for a full refund. Click here to learn more.


With the compact Nu Aqua 600GPD Tankless Reverse Osmosis System, you get four stages of premium water purification at 25% of the size and hundreds of times faster than other RO filters. Let's face it, most RO systems take up lots of space under your sink, and those that don't take up lots of space usually don't filter more than large particles. With this tankless RO system you get all the delicious, safe water you want at a fraction of the time and space you'll spend with others.


4 Stages of Water Purification

The compact reverse osmosis offers four stages of water purification to remove up to 99% of contaminants from your water:

  1. The PP/CB Filter lasts around 6 months and offers you two stages of filtration that removes suspended particles like sediment and rust, as wells as chlorine, volatile organic contaminants (VOC's), taste and odor.

  2. The Granular Activated Carbon (GAC) filter lasts around 12 months and helps absorb organic chemicals, odors, and improves taste.

  3. The 600GPD RO membrane lasts around 36 months and helps get rid of heavy metals like copper, chromium, lead, fluoride, nitrate, and salts.

Unmatched Efficiency

This compact, tankless system gives you a water filtration rate of 600 Gallons of water per day with a 2:1 pure to waste ratio. That means you get more clean water and less waste water than with most 5 stage RO systems out there. Not to mention they do this in about 1/2 the space other RO systems take up.

The tankless design also means you get water a lot faster than with systems. Instead of waiting for a reservoir to fill up and then drawing water from that tank, this system gives you a direct line to refreshing water. That means you're getting 400% more efficiency than other RO systems!

Easy to Use, Simple to Maintain

Each long-lasting filter is simple to install and replace. Unlike other systems that require tools and climbing under your sink to swap filters, all you do is lift the front cover, twist to lock your new filter in place, then twist the filter in the opposite direction to remove and replace it.

No more waiting until your water smells bad or tastes funny to change out your filters. The Smart Faucet changes colors to let you know when your filters are ready to be changed. Once they're changed, the auto-flushing feature allows you to efficiently flush your system without all the waiting around you'll do with other reverse osmosis filters.


  • 600GPD flow rate + 2:1 pure to waste ratio = 400% more efficient than standard ro system!
  • Its compact design can fit in 25-50% of the space standard RO systems take up.
  • The Smart Faucet has a light indicator that shows you when it's time to change your filter.
  • Tool-free twist-lock filters make installation and maintenance a breeze.
  • This tankless, direct flow system delivers water faster than systems that use bulky reservoirs.
  • An integrated booster pump increases efficiency and allows systems to work with low water pressure.

    Package Includes:

    1. Nu Aqua 4 Stage 600GPD Tankless Reverse Osmosis System
    2. Installation Manual (Click Here)
    3. Stage 1 Polypropylene / Carbon Block Filter
    4. Stage 2 Granular Activated Carbon Filter
    5. Stage 3 600GPD Reverse Osmosis Membrane
    6. Smart Faucet
    7. Power Supply
    8. Feed Water Adapter
    9. Drains Saddle
    10. ¼” Quick Connect
    11. Retainer Clips
    12. ¼” Tubing
    13. ⅜” Tubing

    Customer Reviews

    Based on 72 reviews
    Earl Hough
    New reverse system Pure Blue 1.1 R/O system

    The system was easy to install and the pressure that comes out of the faucet is great. The thing that is not known before purchase is the pump makes a audible noise. And after using the faucet there is a discharge of water to the drain. It discharges without use once in a while. This to is audible. We feel like water is being waisted. I'm looking to see if I can drain this discharge to a planter out side. With a drought dumpling nice filtered water feels wasteful. I probably still would have purchased this system but at least I'd know what to expect. Water taste good and fills the 32 oz bottle fast.

    Lots of Clean Water On Demand

    I like this RO system. I did confirm with a new membrane it removed 99.92% of the salt from our water. Our water has no dissolved solids except salt since we use a water softener on our well water. It does a great job! We have fish tanks and use the water for lots of things besides drinking. So, the constant flowing RO system is a real treat to own. If it's one ding, the filters are going up in price. I bought this system because the filters cost about that of normal 10" filters. I hope they keep the filter price reasonable because the system is great!!! Filter changes are so easy.

    Irene Ida Elisabeth Elisabeth Faist
    Like it

    Easy to install and to use.

    Robert Bertao
    1st Tankless

    This unit replaces a 30 year old Culligan R O unit. It was easy to install as I used much of my existing plumbing and just adapted the NuAqua to it. It makes as much water as I need and I am satisfied with the performance.

    Terri Aplin
    Water system

    Great size for small areas! I had a monstrosity under my sink for several years and disliked it due to the mess of wires and size. Construction of this seems sturdy and came packaged well. Was missing a few clamps but great customer service will be mailing them out. The only problem I had with the install was the booklet had no instructions with what to do with the alkalinizer that came with it. Also would help to explain what sounds to expect when it is running as the pump time that it runs is variable but when checking with customer service - they explained it was most likely due to water pressure.