Drinking Water Filter
OptimH2O™ Reverse Osmosis + Claryum®

Reverse Osmosis plus Claryum® Filtration Technology for optimum health and hydration: the only proven water filtration method to effectively remove fluoride.

Tested & proven to remove 5X more contaminants than other RO systems

Select a faucet finish: Brushed Nickel

OptimH2O Reverse Osmosis - Brushed Nickel

another view of the OptimH2O Reverse Osmosis

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OptimH2O Reverse Osmosis - Brushed Nickel is rated 4.3 out of 5 by 208.

Questions? We can help

866-662-6885
MON–FRI: 8AM–6PM CDT
SAT–SUN: 9AM–5PM CDT

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:

our reverse osmosis filters 5 times more contaminants

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

Whole Health

Goodbye
Fluoride

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

Healthier
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

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

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

Catalytic
Carbon Targets chlorine and chloramines (chlorine + ammonia disinfectant).

Ion
Exchange 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 80 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 74 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.

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

How to install the under counter reverse osmosis system
How to replace the membrane cartridge and the remineralizer in the AQ-RO-3

Installing the RO under counter system

Replacing the membrane cartridge and the remineralizer in the AQ-RO-3

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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)

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Warranty & Installation

Previously-sold AQ-RO-3 Install Instructions (Chrome Faucet)

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Read the Reviews

Rated 5 out of 5 by herby from reverse osmosis system water tastes fine. Had the unit professionally installed during kitchen remodel.

Date published: 2018-05-17

Rated 5 out of 5 by SanJoseWater from Better water quality taste. Aquasana RO filter meets my water quality expectations compared to my old type RO filter sets been used for the last 15 yrs. The water is fresh and delicious. It is easy to install and replace the filters when needed.

Date published: 2018-05-09

Rated 5 out of 5 by 125e from Great Great product, easy to install, certified to remove trace contaminates.

Date published: 2018-05-08

Rated 5 out of 5 by Neil56 from Great Product with excellent instructions It is rare that I buy a product that needs to be installed or assembled that has instructions as good as what came with the OptimH2O RO. Installation took 2 hours, it took me 40 minutes to get the slotted washer on the faucet assembly, ( tough reach), I kept dropping it. The trick for me was to turn the faucet assembly 90 degrees to allow the washer to slide on more easily. The water is Great!

Date published: 2018-05-01

Rated 5 out of 5 by Dal Phin from Really enjoying it! I just started using my water system, and my water tastes great! Thank you!

Date published: 2018-05-01

Rated 5 out of 5 by Jkm622 from Just as advertised It has been installed for 2 weeks and have had no problems. Was easy to install.

Date published: 2018-04-23

Rated 5 out of 5 by BrownFamily from Exceeded Our Expectations We've had The RO about 3 weeks now and we LOVE IT !! I wish we had ordered one sooner. My husband had no problem installing it, the longest process was drilling a hole in the sink as per our sink wasn't adapted for a water feature. I like the idea of setting up a starship for new filters so I dont have to remember when to order. The Quality of the water is supreme, my whole family has felt various health benefits. From a decrease in inflammation, weigh loss, cleared up acne and taste buds for certain foods are more enlightened. Definitely give the Auqasana a 5 star rating.☆☆☆☆☆

Date published: 2018-04-19

Rated 5 out of 5 by Tink 2 from R O system Installed another a month it was a great value works well fairly easy to install

Date published: 2018-04-16

Rated 5 out of 5 by TiTiscott41 from great price and high quality purchased filter about 1 month ago, very good customer service, promptly addressed shipping issue I encountered. installation was very straight forward for DIYers. helpful installation video as well. enjoying my water and recommending to family and friends!!

Date published: 2018-04-11

Rated 5 out of 5 by Levi from Greatness Great water. Easy install. Incredible customer service.

Date published: 2018-04-10

OptimH2O Reverse Osmosis - Brushed Nickel Reviews - page 2

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Aquasana FAQs

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.
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.
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.
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).
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.
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.
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.
Does the Aquasana OptimH2O remove fluoride?

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

Yes. The Aquasana OptimH2O is NSF Certified to remove over 97% of arsenic from your drinking water.
How many gallons does the RO holding tank store?

The RO holding tank stores 3.2 gallons of water at a time.
What is the flow rate of the Aquasana OptimH2O?

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

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User Q & A

HI there, I am looking at buying your OPTIMH2O™ REVERSE OSMOSIS + CLARYUM drinking water filtration system. Do you have distributors in Australia? If not, do you ship to Australia? How much would shipping cost?

Asked by: Mareek

I would not recommend this water filter at all it’s too noisy, doesn’t store a lot of water and the lady I spoke with when the filter stopped working was very rude

Answered by: Guia

Date published: 2018-07-18

What specific material is the holding tank/rubber bladder made of? What type of material will the ready-to-use water be stored in? Thank you.

Asked by: AJJohnson

I would not recommend this water filter at all it’s too noisy, doesn’t store a lot of water and the lady I spoke with when the filter stopped working was very rude

Answered by: Guia

Date published: 2018-07-17

Why do I have to run the water for 24 hours. It seems so waist full.

Asked by: Mike brady

Hi Mike, thank you for your question. The bleach is essential to disinfect the holding tank and the rubber bladder inside. That is the last place your water goes after it is filtered and before you consume it, so you want to make sure that it is sanitary. The 24 hour purge also allows for the membrane to become fully saturated. The membrane is an incredibly sensitive filter, and must be fully saturated in order to begin doing its job. If the purge is not performed, and you attempt to utilize this system without fully saturating the filter, the membrane will be damaged. Please keep in mind that during the purge, the flow will not be at full force, in fact, it will be more like a drip/ trickle. The tank is not full during this process, and thus the water pressure exiting the system is almost non existent. I know it sounds wasteful to leave a faucet running for 24 hours, but it is not like having your kitchen tap at full force for the day, it is more like the drip of a leaky faucet. Please let us know if you have any other questions. Thank you, Aquasana Customer Support