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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.*

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culligan reverse osmosis system

Why Choose Culligan Reverse Osmosis Systems

With easy installation, space-saving designs and smart features available, Culligan reverse osmosis systems provide the ultimate drinking water upgrade.

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Reduce Up to 61 Contaminants

Culligan RO systems are certified to reduce 12x more contaminants than the leading standard filter pitcher.**

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15 Billion+ Bottles Saved

Culligan Water filtration solutions make an eco-friendly impact by reducing plastic bottle waste.

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Smart Features Available

Get filter change alerts, track contaminants reduced and view plastic bottles saved through our app.

Reverse Osmosis

Aquasential® Smart Reverse Osmosis Drinking Water System

Top Pick

Aquasential® Smart Reverse Osmosis Drinking Water System

World’s most efficient RO system lets you monitor your water quality from your phone. 

Aquasential® Reverse Osmosis Drinking Water System

Top Pick

Aquasential® Reverse Osmosis Drinking Water System

Customize your water with up to seven stages of filtration and 12 filtration options.

Aquasential® Tankless RO Drinking Water Filtration System

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

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

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. 

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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 Systems

See Whole House Filtration Systems

See Water Softeners

See Water Softeners

Reverse Osmosis Reviews

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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

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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

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Most effective and problem free.

… The annual maintenance is reasonably priced. The maintenance staff has always been polite and performed efficiently.

— Fred H, FL

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Customizable Filtration

Culligan RO systems have up to seven stages of filtration and 12 interchangeable filters.

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Long Filter Life

With filters that can last up to two years, maintenance is simple and worry-free.

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Third-Party Certified

Culligan systems are tested and certified by third-party organizations to ensure they meet the highest of industry standards.

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Filtered Water on Tap

Get filtered water directly from your existing faucet with the ClearLink PRO™ accessory.

culligan expert testing quality of water

Never Question Your Water Quality

Start enjoying the benefits of cleaner, safer water in your home with help from your local Culligan Water expert.

Schedule a Free Consultation

Compare Reverse Osmosis

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

Watch: How Reverse Osmosis Works

Select and compare two products.

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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

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Compatible with ClearLink PRO™ wireless filtration control

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Advanced filtration for lead, arsenic, pharmaceuticals, volatile compounds and other emerging contaminants

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Space-saving tankless design

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See water usage and system performance via app

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Can alert you and your dealer to service needs and filter changes via app

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Track single-use plastic bottles and money saved through app

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Certified to reduce up to 61 contaminants, plus 15 emerging contaminants

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NSF Protocol P231 certified for virus and bacterial reduction

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Reverse Osmosis FAQs

What is reverse osmosis water filtration?​

How long do reverse osmosis filters last?

How do reverse osmosis filters work?​

Is it safe to drink chlorinated water?​

Why get a reverse osmosis system?

Articles and Resources

Reverse Osmosis Systems vs. Pitcher, Faucet and Refrigerator Filters: Which is Best?

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Water Solutions

Learn how reverse osmosis filtration is more comprehensive than standard pitcher or fridge filters.

5 min read

Everything You Need to Know About Reverse Osmosis

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Water Basics

Learn how reverse osmosis can get you better water for drinking, cooking and cleaning.

10 min read

Should I Buy a Reverse Osmosis System? Costs and Benefits

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Water Solutions

Learn how a reverse osmosis system can benefit you, your home and your health.

7 min read

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Schedule Your Free
Water Consultation

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).​

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* 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 standards.

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