Guide · Pipes, leaks & valves
Living with York Region Hard Water
Scale on the aerator, crust inside the shower head, a tank heater that pops and rumbles: these are the marks of hard water. Here is where it builds up in your plumbing and what clears it.
- A plumber answers when you call
- Clear price before any pipe is cut
- Basements left as clean as we found them



The Markham angle
Most of Markham drinks treated Lake Ontario water delivered through the regional system. It's safe and well tested, but it carries dissolved calcium and magnesium, which places it in the moderately hard range. Homes on private wells in the rural north of the city often see much harder water, along with iron.
Minerals do no harm to people. They do, however, settle out wherever water is heated or left to dry: inside water heaters, on shower glass, in dishwasher spray arms and in the tiny passages of a tankless heat exchanger.
One step after another
- Know your number. Your water provider publishes annual quality reports that list hardness. Well owners can have a sample tested privately.
- Watch the hot side. Scale collects fastest where water is heated. A tank that pops or rumbles is often full of sediment.
- Clean aerators and shower heads. Soak them in a bowl of plain vinegar for sixty minutes and rinse well. Flow often returns right away.
- Flush the water heater. Draining a few pails from the tank valve once a year keeps sediment from building up.
- Consider treatment. A water softener removes hardness through ion exchange. Filters address taste, chlorine or sediment, which is a different job.
Look around the house for the quieter signs too. Dishwashers leave a chalky film on glasses, laundry feels stiff, and the toilet tank grows a ring of crust around the waterline. Each of those is a mineral clue rather than a fault, and each improves once the hardness is managed.
Kettles and coffee makers deserve a descaling every month or two. They are small, cheap reminders of what is happening, unseen, inside the water heater downstairs.
Slip-ups we see often
- Scrubbing chrome and glass with abrasive powders. Vinegar or a mild descaler works without scratching.
- Installing a softener without a proper drain and bypass valve, making later service awkward.
- Forgetting the salt. A softener with an empty brine tank does nothing.
- Softening the outdoor hose bib water that only waters the garden, which wastes salt and capacity.
Time to pick up the phone
Call if scale is shortening the life of your water heater or fixtures, if you want a softener or filter plumbed in properly, or if a tankless unit is losing output. We offer water softener installation, filtration systems and water heater flushing. Well owners may also find our well water brief useful.
Hard water is not an emergency. It is a slow cost, paid in shorter appliance lives and more cleaning, and a little routine care keeps it small.
They are small, cheap reminders of what is happening, unseen, inside the water heater downstairs.
From the job notes of Plumbers in Markham
Guide · Pipes, leaks & valves
Signs to watch for
- Stains on a ceiling below a bathroom
- Flow that falls off when a second tap opens
Call a plumber when
- Water is reaching a ceiling, wall cavity or electrical panel
- Sewage is coming up through a floor drain or toilet
- You smell gas near the water heater: leave and call the gas utility first
- A valve will not close or a fitting keeps weeping after tightening
Markham note. Markham water service lines enter on the street-facing basement wall, and the main shut-off and meter usually sit right there. In older houses that valve is often a rusty multi-turn gate valve left untouched since the house was built.