It's Time for a Plumbing Check-Up: Ontario Homeowner's Guide

A plumbing failure can cause thousands of dollars in water damage in a matter of hours. Ontario's climate — with its hard winters and freeze-thaw cycles — creates specific risks for residential plumbing systems. This guide walks through a complete plumbing health check every Ontario homeowner should perform at least once a year.

Know Your Plumbing System

Before you can inspect your plumbing, you need to know where your main water shut-off valve is located. In an emergency — a burst pipe, major leak, or appliance failure — being able to shut off the water within seconds can prevent catastrophic damage. Test the shut-off valve annually to ensure it turns easily.

Checking for Hidden Leaks

Many plumbing leaks go undetected for months, causing water damage, mold growth, and high water bills. Here's how to detect them:

• Water meter test: Turn off all water in the home, note the meter reading, wait 2 hours, check again. Any change indicates a leak.
• Under sink cabinets: Look for water stains, warped wood, mold, or mineral deposits indicating slow drips.
• Toilet leak test: Add food colouring to the toilet tank. If colour appears in the bowl within 15 minutes without flushing, the flapper is leaking — an easy, inexpensive fix.
• Water heater: Inspect the base and surrounding area for puddles, corrosion, or mineral buildup.
• Check ceilings and walls below bathrooms and kitchens for water stains or soft spots.

Drain Maintenance

Slow drains are often a warning sign before a complete blockage. Maintain your drains proactively:

• Clean hair catchers in shower and bath drains monthly.
• Avoid pouring fats, oils, and grease down kitchen drains — let them cool and dispose in the garbage.
• Run hot water for 30 seconds after washing dishes to flush the drain line.
• Have main drain lines professionally snaked every 2–3 years as preventive maintenance, especially in homes with mature trees nearby (root intrusion is common in Ontario).

Water Heater Inspection

Water heaters in Ontario typically last 8–12 years for tank models and 15–20 years for tankless units. Annual maintenance extends their lifespan:

• Flush the tank annually to remove sediment buildup, which reduces efficiency and accelerates corrosion.
• Test the Temperature and Pressure Relief (TPR) valve — lift the lever briefly to ensure it operates freely. If it doesn't, replace it.
• Inspect the anode rod every 3 years — it sacrificially corrodes to protect the tank. Replace when more than 50% depleted.
• Set temperature to 60°C (140°F) to kill Legionella bacteria while preventing scalding.
• Insulate pipes from the water heater with foam pipe insulation for improved efficiency.

Winterizing Your Ontario Home's Plumbing

Frozen pipes are one of the most common and damaging plumbing emergencies in Ontario. Prevention is everything:

• Insulate pipes in unheated spaces — garages, crawl spaces, exterior walls, and attics.
• Know which pipes are most vulnerable in your home. Exterior walls and uninsulated crawl spaces are highest risk.
• During extreme cold snaps (below -15°C), let cold water trickle from taps served by vulnerable pipes.
• Maintain minimum 15°C inside your home even when away.
• Shut off and drain exterior hose bibs before first frost.
• If you have a cottage or seasonal property, a licensed plumber should winterize the entire system before you leave for the season.

Sump Pump Testing

Many Ontario homes have sump pumps protecting against groundwater infiltration. Test yours regularly:

• Pour water into the sump pit to trigger the float switch and verify the pump activates.
• Check the discharge line is clear and directs water away from the foundation.
• Consider a battery backup sump pump — Ontario's spring storms can knock out power exactly when you need the pump most.