Culligan of Ontario, CA

We know your water in Ontario, CA, 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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Limited-time offers and promotions

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Rent ANY Culligan Equipment for $9.95/mo.*

Want to see the difference a Culligan system can make for your family in your home? Try us out! Includes select water softeners, reverse osmosis filtration and whole home water filter systems. *For the first 3 months then standard rates apply.

Get A FREE In-Home Water Test

Our local Ontario Culligan water experts will arrive at your home at a time of your convenience to give your water a FREE test for hardness and other contaminants. We can test in your home, outside at your spigot, front door sample pickup, or sample drop-off.

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.

Ratings & reviews

“We appreciate the customer service and knowledge base of ladies in the front off...

...we have had experience with many of their technicians and we loved them. Very personable and very knowledgeable.
-Korie Bigbee

“They were able to answer every question and concern I had while educating me at the same time...

...both men are very knowledgeable in their work and knowing that helped me trust their recommendations and the company.
-Nicole Koshmerl

“I have had a satisfying experience with this company, which installed my water softening equipment 4 years ago...

...the maintenance with the system is expert and professional.
-William Weddington

“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.

Commercial & industrial water treatment services

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

Frequently asked questions

What cities does Culligan of Ontario, CA serve?

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

What are the signs of hard water in the Ontario region?

How does the installation of my Culligan system work?

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

Does Culligan of Ontario provide water treatment for both city water and well water?

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Culligan of Ontario

Contact.Ontario@hallswater.comContact us

Mon:8:00 AM - 5:00 PM

Tues:8:00 AM - 5:00 PM

Wed:8:00 AM - 5:00 PM

Thur:8:00 AM - 5:00 PM

Fri:8:00 AM - 5:00 PM

Sat:Closed

Sun:Closed

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