From hard water and bad taste to bacteria protection and filter replacement, Water Doctor helps Ontario homeowners choose, install, and maintain the right solution.
Not sure which system fits your water? Start with Help Me Choose or the water hardness checker before you compare products.
From diagnosis to maintenance
One team for recommendations, installation, and replacement care.
Start With Your Water Problem
Choose the symptom you notice most. Read the guide when you need context, or shop directly when you already know the product family.
Use guide first
Better when you still need sizing, diagnosis, or install help.
Shop directly
Best when you already know the product family and want to compare models.
Reorder path
Replacement filters and repeat purchases should stay on the store.
Start here if you are seeing scale buildup, dry skin, spotty dishes, or appliances wearing out early.
Watch for signs like
Choose the guide first when hardness, sizing, or installation still needs to be confirmed.
For better taste, reduced contaminants, and cleaner drinking water at the tap.
Watch for signs like
Choose the guide first when you still need to compare tankless and under-sink RO options.
Best for well water and bacteria-risk cases with chemical-free UV disinfection.
Watch for signs like
Choose the guide first when source water, flow rate, or pre-filtration still needs expert confirmation.
Already own a system?
Skip the discovery flow and go straight to replacement filters. If you are not fully sure about compatibility, talk to Water Doctor before you reorder.
Recent Work
Explore recent projects to see how Water Doctor systems fit into homes and light commercial spaces.
We designed and installed a custom 3-stage filtration suite tailored to the specific water chemistry…
Tell us what you are seeing at home and our Markham team will point you to the right assessment, service, or product path.
Phone
+1 289-748-9666Showroom Location
601 Denison StBusiness Hours
Monday to Friday, 10:00 AM - 5:00 PM
Use chat for a fast question, or choose the action that matches where you are in the decision process.