Water Filtration in Ontario, California
Cleaner, better-tasting water at every tap in Ontario— with a free in-home water test, professional installation, and a lifetime service plan included.
*Subject to credit approval.
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Free, in-home, no obligation · serving Ontario
What’s in Ontario’s water?
The City of Ontario Municipal Utilities Company provides tap water to Ontario homes, pulling largely from the Chino Groundwater Basin and supplementing it with imported supply. That basin, which underlies much of the western Inland Empire, produces water that is notably hard because of the calcium and magnesium it carries. Disinfection with chlorine keeps the supply safe but adds a taste and smell that many residents find off-putting. In the home, the hardness translates into scale buildup on faucets and appliances, spotty dishes, and laundry that never feels quite soft. A PurAgain reverse osmosis system removes up to 99% of contaminants, delivering clean, crisp water your family can trust from the kitchen tap.
The only way to know exactly what’s in your Ontario water is to test it, and that in-home test is free.
Systems we install in Ontario
Every system includes professional installation and our lifetime service plan.
Why Ontario homeowners choose Puragain
Free in-home water test
A certified technician tests your water on-site and shows you exactly what's in it.
Removes 99% of contaminants
Lead, arsenic, PFAS, chlorine, hardness minerals, and more.
Lifetime service plan
Annual testing, maintenance, and unlimited service calls at no charge. You only pay for replacement filters.
7-year warranty
Professional installation and full parts warranty on every system.
Proudly serving Ontario& nearby communities
Based in Escondido at 1249 Simpson Way, our certified technicians serve Ontario and the surrounding area:
Ontario water filtration FAQs
Do you offer free water testing in Ontario?
Yes. A certified Puragain Water technician comes to your Ontario home, tests your water on the spot, and shows you exactly what's in it — at no cost and no obligation.
Is the tap water in Ontario hard?
Ontario, in San Bernardino County, is known for some of the hardest water in the state. Much of it comes from high-mineral groundwater, which means heavy scale, dry skin and hair, and appliances that wear out years early. A Puragain Water system removes hardness minerals, chlorine, and up to 99% of contaminants.
How much does a water filtration system cost in Ontario?
Systems start at $26/month for reverse osmosis, with zero money down (subject to credit approval), free professional installation, and a lifetime service plan included.
What types of systems do you install in Ontario?
We install under-sink 5-stage reverse osmosis, 6-stage alkaline, and whole-house salt-free conditioning systems throughout Ontario and nearby communities.
How long does installation take?
Most installations take 1 to 4 hours and are handled by our certified technicians, who schedule around you and clean up when finished.
Learn about your water
Straight answers before you decide anything.
Ready for cleaner water in Ontario?
Book your free, no-obligation in-home water test today — and see exactly what you’re drinking.
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