OPTIMH2O® Reverse Osmosis + Claryum®MSRP
Maximum removal of 88 contaminants including fluoride and arsenic.
Claryum® 3-Stage Max FlowMSRP
Remove up to 99% of 77 contaminants, now with 44% faster water flow.
77 contaminants reduced, plus a pre-filter to tackle sediment and rust.
Reduce 77 contaminants for clean, healthy water.
- Water treatment & disinfectants
- Brxomodichloromethane (THM)
- Cysts (Cryptosporidium & Giardia)
- Lead pH 6.5
- Lead pH 8.5
- Mercury pH 6.5
- Mercury pH 8.5
- Chemicals (Industrial Solvents, Flame Retardents, Glue, Paint, etc.)
- Bisphenol A (BPA)
- PFOA & PFOS
- Carbon Tetrachloride
- 1, 2-dichloroethane
- cis-1, 2-dichloroethylene
- trans-1, 2-dichloroethylene
- 1, 2-dichloropropane
- 2,4,5-TP (Silvex)
- Tribromoacetic Acid
- Herbicides, Pesticides, Insecticides, Fumigants
- Dibromochloropropane (DBCP)
- cls-1, 3-dichloropropene
- Ethylene Dibromide (EDB)
- Heptachlor (H-34, Heptox)
- Heptachlor Epoxide
Better Performance & Value
Easy to Use
Tested and certified to remove chlorine/chloramines, taste & odor, lead, cysts, pesticides, VOCs, and more for maximum protection for your family.
With Aquasana, rest easy knowing that no chemicals are added to your water during the filtration process.
Better Performance & Value
Filter 15x more contaminants and get 20x more capacity than with the leading gravity pitcher filter.
Designed with the environment in mind, our filters feature minimal disposable parts for reduced plastic waste.
Easy to Use
Engineered for straightforward installation and filter replacements. Because clean water doesn’t have to be complicated.
Max Contaminant Removal
Industry-leading results for your peace of mind.
No chemicals are added to your water during the filtration process.
The Reviews Are In
15,000+ five-star reviews from customers just like you.
You Talk, We Listen
Your feedback drives our product innovation.
Under Sink Water Filter Systems for Healthy, Great-Tasting Water
You use water for everything—from washing vegetables to filling your family's glasses at dinner. For most homes, municipalities treat drinking water with chemicals including chlorine and chloramines to rid it of contaminants. While chlorine and chloramines are successful in treating bacteria in your water, they can miss certain contaminants that are harmful to your overall health and well-being. That's why you should protect your family by installing a drinking water filter system under your sink or on your counter.
Aquasana's drinking water filter systems reduce 15x more contaminants than the leading pitcher filter. Our superior NSF certified Claryum® filtration technology removes up to 99% of lead and other contaminants including VOCs, cysts, asbestos, herbicides, pesticides, chlorine, chloramines, and much more. All while retaining naturally-occurring minerals—like calcium, magnesium, and potassium that improve the pH balance and nutrition of your water.
Choose the Best Under Sink Water Filtration System for Your Home
Under sink water filters are a popular alternative because they remove more contaminants than most pitcher-based options. Additionally, using an under sink filtration system enables you to instantly enjoy clean water straight from the tap without waiting or taking up valuable counter/fridge space.
Aquasana offers several under sink water filtration systems such as our OptimH2O® Reverse Osmosis + Claryum Filter in addition to our 2- and 3-Stage Claryum® filters. As an added bonus, many include a dedicated faucet that dispenses filtered water.
To help determine which under sink water filter is right for you, identify what contaminants are the most important to filter out of your home. If you are looking to reduce the highest number of contaminants, our OptimH2O® Reverse Osmosis + Claryum Filter may be the choice for you. It reduces 88 contaminants—including 95% of fluoride and mercury, 97% of chlorine and arsenic, and 99% of lead and asbestos among other contaminants.
Some reverse osmosis (RO) systems are so efficient at filtering that they also remove healthy minerals, impacting the taste and health benefits of your water. However, our remineralization technology restores a good pH balance—along with calcium, magnesium, and potassium to ensure your drinking water contains vital minerals, has optimal alkalinity, and tastes great.
Other under sink water filtration systems to consider include:
- Claryum® 3-Stage: Removes up to 99% of lead & 76 other contaminants
- Claryum® 3-Stage Max Flow: An upgraded version of the Claryum® 3-Stage, now featuring a 44% faster flow rate and 800 gallons of filter life
- Claryum® 2-Stage: Reduces the presence of 77 harmful contaminants including lead and mercury
All of these under sink filters are tested and certified to reduce chlorine, chloramines, herbicides, pesticides, pharmaceuticals and more in your drinking water.
If you prefer a countertop drinking water filter, our systems use NSF certified Claryum® filtration technology proven to remove up to 99% of lead, asbestos, chlorine, chloramines, and 73 other harmful contaminants.
How to Install and Replace Our Under Sink Water Filters
Each unit comes with its own detailed step-by-step installation instructions in addition to a video guide to help simplify the setup process. Replacement is quick and easy, but will vary in frequency depending on use. For more information on how often to replace components within our under sink water filters—check out our under sink and countertop filter replacement page.
If you have additional questions about installation, replacement, or our products in general—please contact us for customer support.
Replace your filters on time, without worry — auto delivered to you, for less.
Replacements shipped directly to you, right when you need them, at no extra cost.
Lock in a 15% discount on filters to ensure you always get the best price.
Our performance promise to you – free replacement parts, just in case.
Replacing your filters is serious – but your commitment doesn't have to be.