Get Started with a 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

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.

https://wp.culligan.com/wp-content/uploads/2022/12/contaminants-icon.svg

Reduce More Than 70 Contaminants

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

https://wp.culligan.com/wp-content/uploads/2022/12/SmartFeatures-Icon-wBlue-2.svg

40 Billion+ Bottles Saved

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

https://wp.culligan.com/wp-content/uploads/2022/12/SmartFeatures-Icon-wBlue-1.svg

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 Filtration System

Get cutting-edge filtration paired with Wi-Fi connectivity and sustainability.

Aquasential® Reverse Osmosis Drinking Water System

Top Pick

Aquasential® Reverse Osmosis Drinking Water Filtration System

Upgrade your water with highly customized filtration and advanced features.

Aquasential Tankless water filter with reverse osmosis

Top Pick

Aquasential® Tankless Reverse Osmosis System

Get an unlimited supply of filtered water with a compact unit for various spaces.

AC-30 Good Water Machine® Under Sink Water Filtration System

AC-30 Good Water Machine® Under Sink Water Filtration System

Experience high-quality hydration with four-part filtration right on tap.

washing hands with soft filtered water

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

Reverse Osmosis Reviews

Glass of filtered water from water filtration system
big quote icon
big quote icon

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

big quote icon
big quote icon

Most effective and problem free.

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

— Fred H, FL

big quote icon
big quote icon

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

big quote icon
big quote icon

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

big quote icon
big quote icon

Most effective and problem free.

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

— Fred H, FL

big quote icon
big quote icon

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

big quote icon
big quote icon

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

/wp-content/uploads/2022/02/Carot-white.svg
/wp-content/uploads/2022/02/Carot-white.svg
https://wp.culligan.com/wp-content/uploads/2022/12/customizable-icon.svg

Customizable Filtration

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

https://wp.culligan.com/wp-content/uploads/2022/12/Hasslefree-Icon.svg

Long Filter Life

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

https://wp.culligan.com/wp-content/uploads/2022/12/Cert_Icon.svg

Third-Party Certified

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

https://wp.culligan.com/wp-content/uploads/2022/12/SmartFeatures-icon.svg

Filtered Water on Tap

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

https://wp.culligan.com/wp-content/uploads/2022/12/m-culligan-expert-testing-water-quality.jpg?fit=750%2C330

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

Select and compare two products.

Aquasential® Smart RO Drinking Water System

Aquasential® RO Drinking Water System

World’s most efficient RO system

2022/09/rain-drop.svg

Compatible with ClearLink PRO™ wireless filtration control

2022/09/rain-drop.svg
2022/09/rain-drop.svg

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

2022/09/rain-drop.svg
2022/09/rain-drop.svg

Space-saving tankless design

See water usage and system performance via app

2022/09/rain-drop.svg

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

2022/09/rain-drop.svg

Track single-use plastic bottles and money saved through app

2022/09/rain-drop.svg

Certified to reduce more than 70 contaminants, plus 15 emerging contaminants

2022/09/rain-drop.svg
2022/09/rain-drop.svg

NSF Protocol P231 certified for virus and bacterial reduction

2022/09/rain-drop.svg
2022/09/rain-drop.svg
/wp-content/uploads/2022/02/Carot-white.svg
/wp-content/uploads/2022/02/Carot-white.svg

Reverse Osmosis Testimonials

Play Video

2022/08/PlayButton-Orange.svg
big quote icon
There is a huge difference because the quality of the water now is so much better.

— Jose R

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

Culligan Expert testing water at a customer's home
Scheduler Icon

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).

Fields marked * are required fields.

By opting in, you are agreeing to receive SMS messages from Culligan. Alerts at the phone number listed above. 4 msgs/month. If you have questions, text HELP to 73777 or contact Customer Service at 1-855-558-1684 or customerservice@culligan.com. You can opt-out of the subscription anytime by texting STOP to 73777. Msg&data rates may apply. You can view the Terms and Conditions here and Privacy Policy here.

* 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.