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The SmartFlow™ Reverse Osmosis, Aquasana's brand-new, high-efficiency reverse osmosis system provides you with optimum health and hydration. This RO system combines Aquasana's Claryum® filtration technology with reverse osmosis technology to remove up to 99.99% of 90 contaminants, including fluoride, arsenic, lead, chlorine, microplastics, PFOA/PFOS, and more.
The SmartFlow™ Reverse Osmosis boasts one of the highest certified contaminant removal rates of all reverse osmosis systems on the market. In fact, it’s certified to reduce 89 more contaminants than Amazon’s top-selling RO system is certified to reduce.*
Featuring patented SmartFlow™ technology, this system provides you with more pure water, less water waste, and longer filter life than the average RO filter. The SmartFlow™ Reverse Osmosis water filter boasts a 57% greater efficiency percentage and a 93% higher daily production rate than our previous reverse osmosis system.   The SmartFlow™ Reverse Osmosis is tested and certified by WQA to NSF/ANSI Standards 42, 53 (includes P473), 58, 401, and CSA B483.1 to effectively reduce 90 contaminants, including 90% of fluoride.
It’s also certified to reduce 99.99% of cysts, 99.9% of asbestos, 99% of lead, VOCs, and microplastics, and 96% of chlorine, chloramines, arsenic, pesticides, and herbicides — all while restoring healthy minerals that other reverse osmosis systems remove, providing you with optimum health and hydration.

Made in the USA.

Why NSF Certifications are Important

If you are evaluating other Reverse Osmosis water filter systems, be sure to ask if the filters have certifications for 42, 53 & 58 by NSF which is an independent third party tester. Also, ask for a copy of the test report. The report will show you what percentage of each contaminant the filter removes.

Some systems aren't as effective as others. We selected this RO system as the best because it had three certifications by a third party and the test results were better than other systems tested. We've read hundreds of test reports and this filter's results really stood out. View the test report at the bottom of this page.

This RO System Remineralizes Your Water

Some have expressed concern that the effectiveness of RO filters causes them to remove some desirable minerals such as calcium, magnesium, and potassium from your drinking water.

To counteract this, Aquasana includes a “remineralization” component after the RO filter that adds these desirable minerals back into your filtered water.

If you'd prefer not to have an RO system remove and then remineralize your water, you have other options that are highly effective at removing contaminants. Check out the ProOne Promax Countertop and ProOne Promax Under Counter Water Filter Systems. These water filters perform as well as an RO system with a much lower cost. Learn more here

Why Choose Reverse Osmosis?

Reverse Osmosis filter systems offer the highest level water filtration available for home use. In addition to the activated carbon filters, a Reverse Osmosis system employs a Thin Film Composite (TFC) membrane capable of removing many toxic contaminants other methods cannot, such as Arsenic (pentavalent), Barium, Fluoride, Nitrate and Nitrite, Perchlorate, Radium 226/228, and Selenium. Reverse Osmosis filters carry their own, specific NSF certification, 58. The best systems and the only ones you should consider will also have NSF certifications 42 and 53, and remove all of the key contaminants we have been tracking in our previous filters.

Because of the science behind Reverse Osmosis, these systems require a separate holding tank (2-5 gallons) that you will need space for, and also produce waste water so they will need to be tied into your drain. 

The available all-metal dedicated faucet comes in four finishes — Brushed Nickel, Chrome, Matte Black, and Oil Rubbed Bronze — so you can match your kitchen décor. 


Filter Life: 

  • SmartFlow™ Reverse Osmosis Carbon and Claryum® Filter Replacements will last for 365 gallons or up to 6 months
  • Remineralizer Replacement will last for 6 months
  • SmartFlow™ Reverse Osmosis Membrane Replacement will last for 12 months
  • Flow Rate: 0.8 GPM

Have more questions? Call us at 1-800-221-5109 or email us.

Want to see the Aquasana RO system test results? Click here for the full test report!