1. No Hot Water (or Inconsistent Hot Water)

If your hot water heater is failing, you'll notice increasingly cold showers, running out of hot water faster than usual, or discoloured water. A failing water heater can also leak — causing significant damage. Water heaters in Ontario typically last 8–12 years.

2. Low Water Pressure Throughout the House

Low pressure in one fixture usually means a clogged aerator — an easy DIY fix. Low pressure throughout the entire house signals a main line problem, a partially closed shutoff valve, or (in older Ontario homes) Poly-B or galvanized pipe deterioration.

3. Slow Drains in Multiple Fixtures

One slow drain is usually a clog. Multiple slow drains — kitchen sink, bathroom sink, and shower all slow at once — indicate a main drain obstruction. This can back up into your home if left untreated.

4. Water Stains on Ceilings or Walls

Brown or yellow water stains on your ceiling or walls mean water is leaking somewhere above or inside those surfaces. Don't wait on this — water damage accelerates quickly and leads to mould, structural damage, and much larger repair bills.

5. Gurgling Sounds From Drains or Toilets

Gurgling when water drains — or when a toilet flushes — means air is being pushed through a partially blocked or vented drain. This is often a sign of a drain blockage or a problem with your vent stack.

Signs You Need a Plumber Ontario | When to Call Now

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