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

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Nu AquaSKU: WU-600GPD-TL

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Sale price$449.95 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 with 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.
  • 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 47 reviews

    Very simple install. Everything needed was supplied. Only problem was bruises on my side from the cabinet 😁. Water tastes so much better.

    Mahomed Altaf Omar
    Easy and quick setup

    Love the easy setup and use of this unit. Early to add anything further.

    Chris Harlow
    Well designed fast RO...

    Overall, I'm very happy with this system. I'm using it solely to clean water for my fish tank, but it is nice to get heavily filtered water on demand rather than having a garbage to fill over many hours. All of the filters sit nicely in the box which has feet to sit upright (which worked best for me) and not just as shown in picture.

    The set up was pretty straightforward (although I did have to get a couple of additional pieces to match my plumbing) with clear instructions.

    I can now top off my fish tank in minutes now rather than other RO systems that take hours to generate enough clean water. Removing / plugging in new filters is quick and painless as well.

    John Fowler

    For an easy, standard installation this product is brilliantly designed. I had to replace an older purifier (different brand) and the installation was difficult because of cramped spaces and no easily accessed electrical receptacle. But once I had all the lines attached to cold source, faucet, and drain and completed the electrical wiring, plugging everything into the purifier unit was a piece of cake.


    Number #1