Culligan of O'Fallon
Your local water experts since 1936
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.
The Culligan Water advantage
As the leaders in water treatment for 85+ years, Culligan Water 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 Water.
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.
Worried about your water?
Get a FREE water consultation!
Improving your home's water is easier and more convenient than ever with Culligan Water's in-home or virtual appointments.
Culligan Water 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 Water'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
Matt is my service tech and he is terrific! Very friendly and professional. He explains what he did and I know I am good for another year.
Caren Vredenburgh
06/18/2022
What a great company to deal with culligan of ofallon
Is and does exactly what they say they are going to do on your installation of your system
And ck on your system after you have had it for a few months
MARK STINEBAKER
06/15/2022
Culligan in O'Fallon has been a great experience! I used another water service and it was terrible and this is night and day and wouldn't use any other company at this point. They give you information up front including delivery dates and stick to them, swapping out if we run thru our bottles too quickly, if we don't use all of them and only plac...
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Katie Casella
02/26/2022