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Start with the water
We ask about the water source, symptoms, household or facility demand, and any available test results before discussing equipment.
Serving Ontario since 1985 · Markham, Ontario
Practical water knowledge, applied to the property in front of us.
Water Doctor helps homeowners and project teams understand their water, compare appropriate treatment, and plan for installation and long-term care.
What customers can expect
Advice should begin with the application—not a product pitch.
Water Doctor has worked in water treatment since 1985. Today, our Markham team supports customers across the Greater Toronto Area and Ontario with residential, commercial, and specialty water-treatment questions.
The useful starting point is the condition you are dealing with: hard water and scale, drinking-water taste, source-water uncertainty, sediment, disinfection, or an existing system that needs attention.
From there, we narrow the treatment category, confirm fit and sizing, explain installation considerations, and identify the maintenance the equipment will require.
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Recommend for the application
Sizing, treatment stages, installation space, service access, and maintenance needs all influence the right system.
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Support the system over time
Our work can include installation planning, replacement filters, maintenance guidance, and service after the initial purchase.
Where we help
One team for selection, installation planning & ongoing support.
Homes & drinking water
Guidance for hard water, taste and odour, drinking-water filtration, well-water concerns, and existing equipment.
Explore Residential SolutionsBusiness & project work
Application-led planning for restaurants, offices, institutions, light industry, and other sites with defined water requirements.
Explore Business SolutionsParts, maintenance & support
Help identifying replacement filters, understanding maintenance intervals, and deciding when a system needs service.
Ask a Support QuestionBefore a recommendation
What we verify before discussing a specific system.
Certifications and performance claims can be product- and model-specific. Ask us for the documentation that applies to the exact equipment you are considering.
- 01Water source and the problem you are trying to solve
- 02Available test results and local water context
- 03Peak flow, household or facility demand, and equipment sizing
- 04Installation space, drainage, plumbing, power, and service access
- 05Product-specific performance data, certifications, and maintenance requirements
Talk to a local specialist
Bring us the water question, not a product shortlist.
Tell us what you are noticing, or visit the Markham showroom to compare treatment categories and discuss installation fit.