For more than 85 years, Culligan of O'Fallon has been your trusted local water expert. We specialize in water softeners, whole home water filters, RO drinking water systems, bottleless coolers and bottled water coolers for your home or business. Culligan of O'Fallon's industry-leading products feature advanced technology and are backed by a 100% customer satisfaction guarantee. Get better water from every tap.

Culligan of O'Fallon provides high-quality water treatment solutions, bottled water and salt delivery, and professional, efficient service to the following cities: Augusta, Bellflower, Cottleville, Dardenne Prairie, Defiance, Elsberry, Flinthill, Foley, Foristell, Hawk Point, High Hill, Jonesburg, Lake Saint Louis, Middletown, Montgomery City, Moscow Mills, New Florence, New Melle, O Fallon, Old Monroe, Olney, Portage Des Sioux, Rhineland, Saint Charles, Saint Peters, Silex, Troy, Truxton, Warrenton, Wellsville, Wentzville, West Alton, Whiteside, Winfield and Wright City. Make Culligan of O'Fallon your trusted source for cleaner, safer water.

Culligan of O'Fallon provides customized water solutions for your home or business’s biggest water worries, like hard water, high iron water, acid water, bad tasting water and smelly water. They can also address dangerous water contaminants often found around Culligan of O'Fallon, such as chloroform, chromium and radium at levels that exceed guidelines set by the Environmental Working Group.

Contact Culligan of O'Fallon if you want to talk about water softeners, whole home water filters, RO drinking water systems, bottleless coolers or bottled water coolers, or to sign up for a free basic water test to find out what contaminants may be lurking in your water.

Hard water can wreak havoc on just about everything it touches. It leaves behind mineral deposits on your plumbing fixtures and pipes. It causes dry hair, itchy skin, dull laundry, spotty dishes and decreased appliance efficiency.

Water hardness is typically measured in grains of hardness per gallon, or GPG. The area around Culligan of O'Fallon is considered hard at over 8 grains per gallon.

Fortunately, Culligan of O'Fallon’s industry-leading water softening and filtration solutions can help. Contact your local Culligan water expert today for a free basic water test!

As a current Culligan of O'Fallon customer, you can pay your bill online using our Online Bill Pay.

Everyone deserves high-quality water for their home or office, which is why Culligan of O'Fallon regularly offers specials and discounts on products and services. Be sure to check out these limited-time offers.

Culligan of O'Fallon makes cleaner, better water affordable for everyone with options to buy, rent or finance your water treatment equipment. Contact your local water expert for more information.

Yes! Visit Culligan of O'Fallon’s contact page to request a service appointment, receive a quote on any of our water softening, water filtration or drinking water products or inquire about bottled water or softener salt delivery.