Fluoride Water Filter
OptimH2O™ Reverse Osmosis + Claryum®

Remove over 95% of fluoride without demineralizing your water for optimally healthy, clean water. The only proven water filtration method to effectively remove fluoride.

Tested & proven to remove >95% of fluoride + over 70 other contaminants

Select a faucet finish: Brushed Nickel
  • all-metal brushed nickel faucet
  • all-metal chrome faucet
  • oil rubbed bronze faucet
OptimH2O Reverse Osmosis - Brushed Nickel is rated 4.5 out of 5 by 123.
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$17499 REVERSE OSMOSIS SYSTEMS - limited time!
  • MSRP: 399.99
  • Sale: 174.99

Save 56% + free shipping with Water for Life $174.99

Questions? We can help

  • 866-662-6885

Whole Health

Ultimate Purity*

Aquasana OptimH2O delivers the best drinking water available for optimal hydration.

OptimH2O is the first reverse osmosis system of its kind to pair powerful reverse osmosis filtration with Claryum selective filtration PLUS remineralization.

Remove the most contaminants from your water while maintaining the benefits of healthy minerals other reverse osmosis systems simply remove.

OptimH2O removes:

  • 95% fluoride and mercury
  • 97% chlorine and chloramines
  • 99% lead, asbestos and arsenic
our reverse osmosis filters 5 times more contaminants

For a complete list of contaminants reduced please see our Performance Data Sheet.

Whole Health


Remove over 95% of fluoride without demineralizing your water for optimally healthy, clean water.

Reverse Osmosis is the only proven water filtration method on the market to effectively remove fluoride from regular tap water.

Whole Health

Drinking Water

Remineralizes water to put back the healthy minerals lost in the reverse osmosis process like calcium, magnesium, and potassium.

Improves water pH balance for optimally alkaline drinking water.

Pure Performance

Reverse Osmosis + Claryum® Technology + Remineralization

Filters out dissolved solids smaller than 1 micron like fluoride and arsenic.

Reduces organic chemicals like herbicides, pesticides, VOCs and MTBE.

Targets chlorine and chloramines (chlorine + ammonia disinfectant).

Filters heavy metals like lead and mercury.

Absolute Sub-Micron Filtration Captures asbestos and chlorine resistant cysts like giardia and cryptosporidium.

Remineralization Puts back healthy minerals to improve pH balance & water alkalinity.

The result: Effectively removes >95% of fluoride plus over 70 other contaminants and puts back healthy minerals for optimal drinking water.

Pure Performance

Easiest filter Replacement

Replacements engineered for ease. Eco-friendly carbon and Claryum filter housings easily twist off so replacing your filters is a snap!

Pure Performance

Ultra Fast

Aquasana OptimH2O features a reliable flow rate to deliver optimally clean, healthy water fast!

0.5 GPM

How It Works

Superior Filtration

Reverse osmosis reduces 14 impurities including fluoride, nitrates, nitrites, lead, radium and arsenic.†

Selective Claryum® Filtration reduces 65 contaminants including chlorine, chloramines, heavy metals, pesticides, and herbicides.

Remineralization designed to provide healthy amounts of calcium, magnesium and potassium for optimally alkaline, pH balanced water.

certified by NSF

Tested and Certified to NSF/ANSI Standards 42, 53, 58, 401 + P473 in model AQ-RO-3 for the claims specified on the Performance Data Sheet

  • 1 year RO membrane life**
  • 1 year remineralizer life**
  • 6 month carbon/ Claryum filter life
  • 2 year warranty
  • 90 day guarantee

** Capacity depends on water quality and usage.

Help & Support

Video Help

Installing the RO under counter system

Learn More

Product Information

  • Daily Production (DPR): 13.32 gallons
  • Operating Pressure: 40-100 psi
  • Operating Temperature: 40-100 F
  • Manifold Dimensions: 12" × 4.5" × 12.5" (L × W × H)
  • Tank Dimensions: 16" × 11" (H × Diameter)

Learn More

Read the Reviews

Rated 4 out of 5 by from Reverse osmosis filter We just installed the unit over the weekend and have not had a chance to use the system yet. We are still running the water through it as part of the installation. The installation was very easy and I was able to accomplish it without a problem. One negative comment is the "manifold" mount key holes. Since the filters require upward pressure to install, it is difficult to get enough force on the screws provided to prevent the manifold from sliding up on the screws. I recommend using flat washers under the screw heads to apply more friction and more evenly distribute the loads on the plastic mount.
Date published: 2017-11-20
Rated 5 out of 5 by from Great features! It’s match perfectly with my brush nickel kitchen counter stop and it’s working well!!
Date published: 2017-11-18
Rated 5 out of 5 by from Best water ever!! I just got it and I really satisfied with it!!! I always now carry my bottle with me!!
Date published: 2017-11-16
Rated 5 out of 5 by from Easy install I replaced my old R.O. system with the Aquasana, and it was very easy.
Date published: 2017-11-16
Rated 4 out of 5 by from Remodeled Kitchen Awaits a New H2ORO Having just installed this system after having it in the box for two of thred months I am very pleased with the outcome, although I hope that this will get to a tech service person. The pressure from the outlet seems to be a bit low as it takes more time than maybe it should. That is the only concern I have. So hooray for the product.
Date published: 2017-11-15
Rated 3 out of 5 by from Ok Install was easy once you get the fittings to not leak. Water taste is ok. Takes alot of room under the sink.
Date published: 2017-11-14
Rated 4 out of 5 by from Pleased Now we have great tasting water! Love the look. The installation was not too bad
Date published: 2017-11-12
Rated 5 out of 5 by from Working well! I followed the instructions and installed the unit about a month ago. I was a little worried that I'd have a leak with all the connections, but not problem. The step by step instructions were easy to follow and everything went well.
Date published: 2017-11-11
Rated 5 out of 5 by from Great product, great customer service Called customer service to ask some questions about the RO unit. They were so helpful I ended up ordering over the phone, saved $25 too. Also signed up for the filter replacement program. RO system works very well and installation was easy. The mineral filter makes the water taste great! I like that it is NSF certified, one of the few out there. Only gripe I have is the hole in my counter top is 1 1/4", the faucet falls through that size. It should include a trim ring for larger holes. Ended up buying a trim ring from a different faucet, but luckily it fit and looks great.
Date published: 2017-11-11
Rated 4 out of 5 by from Satisfied! I am happy that I selected this system from a lengthy study over many makers. It makes water taste so good and the price was good. I needed a pro's helping hand for installation. Also, I am still not quite sure how I know when to change filters.
Date published: 2017-11-11
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Learn More

Aquasana FAQs

  1. Do I need a plumber to install the system or can I install it myself?

    Depending on your existing skills and experience, we recommend hiring a professional to install your reverse osmosis system. Installation does require drilling into your pipes which is not recommended for individuals unfamiliar with plumbing and permanent appliance installation. Please read through the owner's manual carefully before attempting to install the system. If you have any questions or need assistance, our technical support representatives at 866-662-6885 can walk you through the installation process.

  2. How often do I have to replace the cartridges and membrane?

    • Stage 1 (Carbon) and Stage 3 (Claryum) filter cartridges should be replaced every 6 months or 365 gallons. To make replacements easier and cheaper, these cartridges are eligible for our Water for Life auto-ship program. Get free shipping, the best discounts, and an extended product warranty by joining Water for Life.
    • We recommend replacing Stage 2 (RO Membrane) every 2 years depending on usage and water quality. For homes with higher water usage and/or poorer water quality, you may need to replace your RO membrane every 1 to 2 years. For homes with lower water usage and/or better water quality, you may only need to replace your RO membrane every 2 to 3 years.
    • We recommend replacing the remineralizer every 1 year depending on usage and water quality.

  3. Is this purified water?

    Yes. The Aquasana OptimH2O uses reverse osmosis to effectively purify your drinking water. In addition to reverse osmosis, the OptimH2O system also uses selective filtration to reduce over 60 other contaminants, plus includes a remineralizer designed to put back healthy minerals like calcium, magnesium, and potassium that are removed in the reverse osmosis process.

  4. I'm a renter, so I can't drill or modify the plumbing. What should I do?

    Unfortunately, drilling into your water pipes is required to install the Aquasana OptimH2O Reverse Osmosis system. If you already have an existing hole for a vegetable sprayer or soap dispenser on your sink countertop, our AQ-5200 and AQ-5300 Under Counter Drinking Water Systems can be installed without making permanent changes to your sink and are great options for rental properties. If there is not an existing hole on your sink countertop, we also have two countertop options that offer the same professional grade filtration as our under counter options (please see the Powered Water Filtration System or AQ-4000).

  5. I have an existing filtration or side faucet from a previous system. Can I use that with my new Aquasana water filter?

    The faucet included with the Aquasana OptimH2O is specifically designed and NSF tested and certified to work with our reverse osmosis system — any other Aquasana faucet or faucet from another filtration system not designed to work with a reverse osmosis system will not work for the Aquasana OptimH2O and may cause damage to your filtration system. If you choose to use another reverse osmosis air gap faucet, we recommend you enlist the help of a plumber to ensure proper installation.

  6. Why is it important to flush my OptimH2O Reverse Osmosis System during the initial installation?

    When RO membranes are manufactured, there is a preservative used to protect the membrane fibers from damage. This preservative needs to be flushed out after the system is installed and prior to drinking water from the RO system. In addition, the RO holding tank should be sanitized with a drop of bleach during the install. It is important to flush the system for the entire 24 hours during the initial install to ensure all the bleach from the holding tank is washed away before consumption.

  7. What does TDS mean?

    TDS is the acronym for Total Dissolved Solids, the amount of dissolved minerals and metals present in water. TDS meters tell you the concentration of dissolved minerals and metals, but are not an accurate measurement for contamination. Aquasana products reduce and remove harmful TDS like lead, but selectively retain or replace healthy dissolved solids like calcium, magnesium, and potassium. Aquasana OptimH2O comes standard with a 1 year remineralizer designed to replace healthy calcium, magnesium, and potassium lost in the reverse osmosis process.

  8. Does the Aquasana OptimH2O remove fluoride?

    Yes. The Aquasana OptimH2O is NSF Certified to remove over 95% of fluoride from your drinking water.

  9. Does the Aquasana OptimH2O remove arsenic?

    Yes. The Aquasana OptimH2O is NSF Certified to remove over 97% of arsenic from your drinking water.

  10. How many gallons does the RO holding tank store?

    The RO holding tank stores 3.2 gallons of water at a time.

  11. What is the flow rate of the Aquasana OptimH2O?

    OptimH2O flows at a rate of 0.5 gpm (gallons per minute).

Learn More

User Q & A

Does the large dumb fill completely, mine is light but water comes out of the faucet 

Asked by: Kay’s
I never weighed the tank after operation, but I get plenty of water.  Remember water is only 8 lbs per gallon, so how heavy do you think it should be?  Enjoy your new water.
Answered by: TimJames
Date published: 2017-11-18

I got this filter a year ago. I just hooked it up two days ago. Do i need to get new filters or are they fine since they’ve never been used only sat for a year

Asked by: Anonymous
I would use them if they were not filled with water I wouldn’t worry about shelf life
Answered by: Stang
Date published: 2017-10-26

It seems this would work well with a whole house system. Would its filter life increase if used after the whole house filter. Seeing this get somethings out of the water the whole house does not. Also can you tee of the output to feed a fridge?

Asked by: Steve1234
Ours feeds the frig from under the kitchen sink. Not sure it has the capacity for whole house. Ours runs quite often with just 2 of us using water and ice mainly from the frig and a gallon or less from the faucet.
Answered by: Deb9
Date published: 2017-10-23

Hi, I'm curious what material the storage tank is made from and if the interior is lined with anything or chemically treated?

Asked by: Miles
Hi I am only a user but the storage tank itsel is nickel, nothing else. To the best of my knowledge there is an interior bladder made from butyl. That's is the only purity caveat to the best of my knowledge. But best one can do in this mad polluted world.
Answered by: DaveR
Date published: 2017-10-20

I have a portable dishwasher that hooks up to my sink faucet. Is it possible to turn off the filter while my dishwasher is running so that I can use the filters only for drinking?

Asked by: Anonymous_M
Thank you for your question. This system will utilize a separate beverage faucet, so it should not have any affect on your main faucet or portable dishwasher. Thank you, Aquasana Customer Support
Answered by: Aquasana Customer Support
Date published: 2017-11-09

Hi, which is the shipping weight with the box?????

Asked by: Delta
Hello! This system weighs about 20 pounds Thank you, Aquasana Customer Support
Answered by: Aquasana Customer Support
Date published: 2017-10-12

We have installed this system around April this year. It was working fine until a week ago. It does not produce drinking water at all. There is a small amount of water on the faucet (about few table spoon) please help to identify and correct the problem

Asked by: Ozzy23
Hello! I'm sorry to hear that your system is not flowing properly. Please contact our service team at 866.662.6885 and we will assist in troubleshooting. Thank you, Aquasana Customer Support
Answered by: Aquasana Customer Support
Date published: 2017-10-12

I am interested in buying OptimH2O but it is not equipped with UV light. Can I install a separate UV light to work with this system?

Asked by: edongski
Hello, Thank you for your interest in Aquasana! We do not currently have a point of use system that can be fitted with a UV, but we do offer a whole home UV filter that can be purchased individually, or with a whole home filtration unit. Please give us a call at 866.662.6885 if you would like more information on any of our systems and we will be happy to help. Thank you, Aquasana Customer Support
Answered by: Aquasana Customer Support
Date published: 2017-10-12
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