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Browse the Top 15 Water Treatment Companies Serving Ontario, ON

See what 15 water treatment providers serving Ontario, ON, including Mallorytown, Aurora and Barrie, offer for planned installations and system servicing. Read customer feedback, explore business profiles and contact companies that match your water treatment requirements.
Aurora (1)
Barrie (1)
Chatham (1)
Cochrane (1)
Dorchester (1)
Ingersoll (1)
Kitchener (1)
Mallorytown (2)
Midland (1)
North York (1)
Oakville (1)
Oshawa (1)
Saint Catharines (1)
Welland (1)
Not rated yet
1000 Islands Water Treatment
34 Years
Not rated yet
We offer Ministry-certified well system inspections and upgrades
Trusted water treatment and plumbing solutions since 1992. Certified technicians providing water testing, system installations, and emergency repairs across Leeds & Grenville.
Water Treatment Plumbing Repairs Well Inspections
(613) 342-5451 Call Profile
Not rated yet
The Water Stop
38 Years
Not rated yet
We offer 35+ years of specialized water treatment experience
Trusted water treatment experts serving Midland since 1988. Specializing in Kinetico systems, water softeners, reverse osmosis, and 24-hour water vending. 35+ years of experience with certified technicians.
Water softening systems Reverse osmosis filtration UV sterilization
(705) 526-6665 Call Profile
Not rated yet
Desforges Water Treatment
28 Years
Not rated yet
We have 25 years of experience in residential and commercial water treatment.
Desforges Water Treatment offers comprehensive water analysis, softeners, and filtration systems in Eastern Ontario. Serving residential and commercial clients since 1998.
Water Analysis Water Softeners Filters
(613) 524-2177 Call Profile
Not rated yet
Pure Choice Water
36 Years
Not rated yet
We have over 33 years of experience in water treatment solutions.
Trusted water treatment specialists offering Hague and Kinetico softeners, reverse osmosis systems, and Quooker taps. Serving South West England since 1990 with 465 5-star reviews.
Water Softeners Water Filters Taps & Tap Systems
(519) 351-1444 Call Profile
Not rated yet
AJ's Water Treatment
27 Years
Not rated yet
We have over 25 years of experience in water treatment systems.
AJ's Water Treatment offers customized water filtration, softening, and purification solutions in St. Augustine, FL. Serving homes and businesses since 1999 with free in-home testing.
Drinking Water Systems Water Softening Specialty Filters
(613) 342-7276 Call Profile
Not rated yet
Ovivo
Emergency
Not rated yet
We offer over 150 years of expertise in water treatment solutions.
Ovivo provides advanced water treatment solutions, equipment, and services for industrial, municipal, and electronics markets worldwide, focusing on sustainability and innovation.
Water Treatment Solutions Digital Plant Monitoring Chemical Products
(705) 726-6655 Call Profile
Not rated yet
ONE STOP WATER
24 Years
Not rated yet
Over 20 years of combined experience in water treatment
Trusted provider of water treatment systems since 2002. Offering softeners, filtration, reverse osmosis, and UV disinfection. Free water testing and financing available.
Water Softeners Filtration Systems Reverse Osmosis
(519) 303-0054 Call Profile
B&R Water Treatment
36 Years
Emergency
Not rated yet
B&R Water Treatment
36 Years
Emergency
Not rated yet
We offer 35 years of generational expertise in water treatment solutions.
B&R Water Treatment provides expert water softeners, filtration, and reverse osmosis systems in Northeastern Ontario. With 35 years of experience and Kinetico-certified equipment, we ensure clean, safe water for homes and businesses.
Water Softeners Water Filtration Reverse Osmosis
(705) 272-6305 Call Profile
Not rated yet
Still Water
31 Years
Not rated yet
We offer free water analysis and in-home consultations since 1995
Discover premium water purification systems in Oshawa. Still Water offers reverse osmosis, UV disinfection, and water softener solutions since 1995 with free water analysis.
Water Softeners UV Purification Reverse Osmosis
(905) 436-2893 Call Profile
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Neotec Water Treatment
33 Years
Not rated yet
We have over 30 years of specialized experience in water treatment systems
Trusted Canadian water treatment provider since 1993. Offering customized filtration systems, reverse osmosis installations, and maintenance services for residential and commercial properties nationwide.
Reverse Osmosis Systems UV Sterilizers Water Softeners
(905) 841-9507 Call Profile