Culligan of O'Fallon, MO

We know your water in O'Fallon, and with over 85 years of experience, we know how to provide you and your family with the cleaner, safer and great-tasting water you deserve with our water treatment services.

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Culligan products and services in O'Fallon

Why choose Culligan for your water treatment services?

As the leader in water treatment for 85+ years, Culligan is dedicated to improving lives and protecting the planet by providing access to safer, better-tasting and more sustainable water.

100% satisfaction
guarantee

If you're not completely satisfied within 30 days of purchase, we'll refund the cost.

Backed by science
and sustainability

We’re passionate about finding new ways to bring you better water solutions through sustainability-driven innovation.

Unmatched
care

Enjoy white-glove service, expert installation and hassle-free maintenance.

Long-standing
trust

With over 85 years of water treatment experience trusted by over 150 million customers, you can count on us to provide the solutions and service you need, anytime.

Looking for the right water treatment system for your home? Take our quiz!

Whether you have city or well water, take our quick and simple quiz to find out what’s happening with your water and get recommended water treatment solutions.

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Ratings & reviews

“Great service, friendly people, and a good value

We love our in-home salt delivery service too.

-Jo B.

“Use the salt drop off and it has worked well over the years as well as the tech always checks the system to make sure everything is working correctly...

...great service.

-Don W.

“Office staff and delivery associates are very professional and on time always...

...if you need an interim delivery, there is no problem at all. 5 stars plus.

-Paul K.

“Wonderful, trustworthy service.

Installing a water softener was the best decision. I wish more people had told me it was important to test and consider much earlier. My pipes and bathroom fixtures thank me and my hair is soft again!

-Kristin H.

“Safe, clean-tasking water directly from the tap is wonderful.

Had we realized just how affordable and stress-free the installation of our new reverse osmosis system was, we would’ve done it years ago.

-Anthony M.

“They helped me pick the best solution for my home.

They explained all the different options. I am happy with my water softener and reverse osmosis systems! Quick install, and looks like low maintenance.

-Steph L.

Schedule your free water consultation

Our Culligan water experts are ready to help you find the right solution for your problem water. We offer a free in-home water test, or we can schedule a phone consultation (you can select your choice in the next step).

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Water treatment articles and resources

Explore more Culligan water solutions

Office
drinking water

Cost-effective and convenient systems bring fresh, filtered water to your employees.

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Commercial & industrial water treatment services

Revolutionary designs for commercial and industrial water treatment are customizable to your business needs.

Explore commercial/industrial water solutions

Frequently asked questions

What cities does Culligan of O'Fallon, MO serve?

Culligan serves Augusta, Cottleville, Dardenne Prairie, Defiance, Elsberry, Foley, Foristell, Hawk Point, High Hill, Innsbrook, Jonesburg, Lake Saint Louis, Lake Sherwood, Lincoln County, Marthasville, Martinsburg, Montgomery City, Montgomery County, Moscow Mills, New Florence, O'Fallon, Old Monroe, Portage Des Sioux, Silex, St. Charles, St. Charles County, St. Paul, St. Peters, Troy, Truesdale, Truxton, Warren County, Warrenton, Weldon Springs, Wentzville, West Alton, Winfield and Wright City.

How do I find the best water treatment services & solutions for my home?

The best way to find out which water treatment solutions are right for your home is by scheduling a free consultation with one of our local water experts to find out more. You can also get started by taking our quick Water Solutions Finder quiz here.

What are the signs of hard water in the O'Fallon region?

Dry skin and hair, limescale buildup around faucets and showerheads, soap scum on shower walls or too much wear and tear on your water-using appliances are all signs of hard water in your home. With a Culligan water softener, you’ll experience longer-lasting appliances, hydrated skin and hair, brighter laundry and greater savings.

How does the installation of my Culligan system work?

Here at Culligan of O'Fallon, we have trained technicians who can expertly and efficiently install any of our water treatment systems. Our installers are friendly, efficient and can come at a time that works for your schedule.

Where can I find information about warranties and manuals for Culligan products?

We’re proud to offer industry-leading warranties, including a 30-day Satisfaction Guarantee. Find warranty information for our specific water treatment systems in your owner’s manual. Find a selection of these manuals here.

Does Culligan of O'Fallon provide water treatment for both city water and well water?

Yes, Culligan of O'Fallon has experience finding the right local water treatment for you regardless of whether you get your water from the city or from a private well. Whether you need water softening, filtration or a combination, we can serve your needs regardless of your water source.