Culligan of O'Fallon
The local water experts
Providing cleaner & softer water for every faucet in your home since 1936
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Water solutions you can trust
Backed by over 85 years of experience, your local Culligan water expert has a wide range of products to address your unique water concerns.
Did you know that the EPA recently updated PFA regulations?
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The Culligan advantage
As the leaders in water treatment for 85+ years, Culligan helps you provide your family with better, safer water at every tap.
100% satisfaction guaranteed
If you are dissatisfied for any reason, Culligan will refund your purchase within 30 days.
600+ locations nationwide
With locally-owned dealerships in communities across North America, Culligan is your local water expert.
#1 in custom water solutions
No one filters, softens and delivers more than Culligan.
Culligan of O'Fallon
When you choose Culligan for your water needs, you’re choosing an industry leader with top-rated water treatment equipment, advanced technology and a 100% satisfaction guarantee. Since 1936, Culligan's local water experts have been committed to providing the best service available.
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Improving your home's water is easier and more convenient than ever with Culligan's in-home or virtual appointments.
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Culligan services
You can count on Culligan service to exceed your expectations. Check out the wide range of services provided by your local water expert below.
Water quality your family can count on
Culligan's award-winning technology and service have attracted recognition from some of the most trusted names in product testing and quality assurance.
The Culligan of O'Fallon difference
Great Company to work with. They make my deliveries on time and respond quickly to any request I have. Very dependable.
Lynette Geno
06/10/2025
There is no way I would trust my water with anybody else but them..
12/10/24
I had Culligan water come out today and replace my iron clear which removes the iron and the sulfur out of my water. I had the pleasure of Matt Hawn doing the install today. Talk about an exceptionally knowledgeable employee. What an asset to a company. He did a great job....
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Sir-Mittler
05/28/2025
I recently moved into a home with a Culligan Water softener. Having no experience with this, I made an appointment to have the system checked, and the operation of it explained to me. Allen thoroughly explained the system to me. Unfortunately, I didn't listen well enough and made a second appointment. Allen again came by and was very patient a...
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Paul Ferber
03/17/2025