Target a broad range of potential contaminants and enjoy a virtually unlimited supply of worry-free drinking water with Culligan Water® reverse osmosis (RO) systems.*
SCHEDULE FREE WATER CONSULTATION
Reverse Osmosis Systems
Upgrade to Cutting-Edge Filtration
Target a broad range of potential contaminants and enjoy a virtually unlimited supply of worry-free drinking water with Culligan Water® reverse osmosis (RO) systems.*
SCHEDULE FREE WATER CONSULTATION
With easy installation, space-saving designs and smart features available, Culligan reverse osmosis systems provide the ultimate drinking water upgrade.
Reduce Up to 61 Contaminants
Culligan RO systems are certified to reduce 12x more contaminants than the leading standard filter pitcher.**
15 Billion+ Bottles Saved
Culligan Water filtration solutions make an eco-friendly impact by reducing plastic bottle waste.
Smart Features Available
Get filter change alerts, track contaminants reduced and view plastic bottles saved through our app.
Top Pick
Aquasential® Smart Reverse Osmosis Drinking Water System
World’s most efficient RO system† lets you monitor your water quality from your phone.
Top Pick
Aquasential® Reverse Osmosis Drinking Water System
Customize your water with up to seven stages of filtration and 12 filtration options.
Top Pick
Aquasential® Tankless RO Drinking Water Filtration System
Save space with a sleek, slim, tank-free system that can fit vertically or horizontally.
AC-30 Good Water Machine® Under Sink Water Filtration System
Get advanced water filtration and tackle contaminants that cause foul odors and tastes.
ClearLink PRO Home Under Sink Water Filtration Wireless Accessory
Switch between RO and tap water with the touch of a button — no separate faucet required.
Not What You’re Looking For?
Want to tackle problem water issues that impact cleaning, laundry and bathing, too? Ready to put an end to hard water headaches? See how Culligan whole house filtration systems and water softeners can help address your water concerns.
See Whole House Filtration SystemsSee Whole House Filtration Systems
See Water SoftenersSee Water Softeners
Our drinking water is so much better.
And we are happy to have the water on hand instead of having to buy bottled water.
— Catherine G, OH
Culligan is a trusted name.
… We purchased their drinking water system and it has made such a huge difference in the taste of our water.
— Donna and Les C, AB
Most effective and problem free.
… The annual maintenance is reasonably priced. The maintenance staff has always been polite and performed efficiently.
— Fred H, FL
Culligan is a trusted name.
… We purchased their drinking water system and it has made such a huge difference in the taste of our water.
— Donna and Les C, AB
Most effective and problem free.
… The annual maintenance is reasonably priced. The maintenance staff has always been polite and performed efficiently.
— Fred H, FL
Our drinking water is so much better.
And we are happy to have the water on hand instead of having to buy bottled water.
— Catherine G, OH
Culligan is a trusted name.
… We purchased their drinking water system and it has made such a huge difference in the taste of our water.
— Donna and Les C, AB
Most effective and problem free.
… The annual maintenance is reasonably priced. The maintenance staff has always been polite and performed efficiently.
— Fred H, FL
Our drinking water is so much better.
And we are happy to have the water on hand instead of having to buy bottled water.
— Catherine G, OH
Culligan is a trusted name.
… We purchased their drinking water system and it has made such a huge difference in the taste of our water.
— Donna and Les C, AB
Customizable Filtration
Culligan RO systems have up to seven stages of filtration and 12 interchangeable filters.
Long Filter Life
With filters that can last up to two years, maintenance is simple and worry-free.
Third-Party Certified
Culligan systems are tested and certified by third-party organizations to ensure they meet the highest of industry standards.
Filtered Water on Tap
Get filtered water directly from your existing faucet with the ClearLink PRO™ accessory.
Start enjoying the benefits of cleaner, safer water in your home with help from your local Culligan Water expert.
Schedule a Free Consultation
Start enjoying the benefits of cleaner, safer water in your home with help from your local Culligan Water expert.
Schedule a Free Consultation
Unsure of the best reverse osmosis system for your home? Learn how these systems work, then review the comparison chart below to help determine which one may be right for you.
Watch: How Reverse Osmosis Works
Select and compare two products.
 |  |  |  | |
|---|---|---|---|---|
Benefits | Aquasential® Smart RO Drinking Water System | Aquasential® RO Drinking Water System | Aquasential® Tankless RO Drinking Water Filtration System | AC-30 Good Water Machine® |
World’s most efficient RO system† |  | |||
Compatible with ClearLink PRO™ wireless filtration control | | | | |
Advanced filtration for lead, arsenic, pharmaceuticals, volatile compounds and other emerging contaminants | | | ||
Space-saving tankless design | | |||
See water usage and system performance via app | | |||
Can alert you and your dealer to service needs and filter changes via app | | |||
Track single-use plastic bottles and money saved through app | | |||
Certified to reduce up to 61 contaminants, plus 15 emerging contaminants | | | ||
NSF Protocol P231 certified for virus and bacterial reduction | | |
Play Video
— Jose R
What is reverse osmosis water filtration?
In reverse osmosis water filtration, water flows across a tightly woven membrane that separates the water from contaminants as small as a single atom. Typically, the reverse osmosis process is combined with multiple other stages of filtration including a sediment filter, carbon filtration, and additional speciality filtration stages.
How long do reverse osmosis filters last?
The lifespan of your filter depends on a number of factors including how much water you use, your local water quality and the specific RO system you choose. Regularly replacing your filters will help ensure your system is running at full capacity. Some filters should be changed annually, but others can last up to two years. The reverse osmosis membrane should be checked annually and typically lasts three to five years.
How do reverse osmosis filters work?
Reverse osmosis filters contaminants from water by forcing them through a semipermeable membrane. Some of these contaminants include lead, mercury and chromium, among many others.
Is it safe to drink chlorinated water?
It’s common for city water to be treated with small concentrations of chlorine, which is not typically a hazard to your health. However, if you prefer to minimize the chlorine in your water, which can cause unpleasant tastes and odors, a reverse osmosis system could help.
Why get a reverse osmosis system?
You can get a virtually unlimited supply of cleaner, safer, better-tasting water right from the tap. With multiple stages of filtration, these systems are one of the most comprehensive ways to treat your water for a wide variety of potential problems.
Our Culligan Water experts are ready to help you find the right solution for your water needs and concerns. We offer a free, in-home consultation and water test, or we can schedule a phone consultation (you can select your choice in the next step).
Fields marked * are required fields.
* Contaminants may not be present in your water.
** Aquasential RO and Smart RO when configured with post-filter and Total Defense cartridge.
† Efficiency is based on 3rd party testing to NSF/ANSI standards for a tanked RO system.
