Is Water Damage Covered by Insurance in Canada?

The short answer: sudden and accidental water damage is almost always covered in Canada. Gradual leaks, sewer backup, overland flooding, and groundwater usually are not — unless you have specific endorsements. Here is how that actually works under Ontario policies.

What Standard Policies Cover

Every standard Ontario homeowner insurance policy covers sudden and accidental water damage from internal sources:

• Burst pipes — copper, PEX, or galvanized supply line failures
• Frozen pipe bursts during cold snaps (some policies require you to maintain adequate heat)
• Appliance failures — dishwashers, washing machines, refrigerators, hot water tanks
• Toilet supply line and wax ring failures
• Ice damage — ice dams pushing water under shingles, burst pipes from freeze-up
• Storm damage — wind-driven rain entering through damaged roofing or windows
• Hail damage to roof and siding
• Fire suppression water — firefighting water damage from a covered fire

What Is Typically Excluded (Requires Endorsements)

These losses are not covered under standard policies — you need to add specific endorsements:

• Sewer backup — when the municipal sewer surcharges and pushes water back into your basement. Very common in combined-sewer parts of Toronto and a routine cause of basement flooding claims. Endorsement typically $30-$80/year for $10,000-$40,000 coverage.
• Overland water — rainfall, snow melt, or overland runoff flooding. Relatively new endorsement, required after 2013-era flooding events exposed the coverage gap.
• Service line coverage — water service and sewer lateral between the street and your home
• Earthquake water damage — not applicable in Toronto but worth knowing

What Is Always Excluded

Some losses cannot be covered regardless of endorsements:

• Gradual or long-term leaks — if the cause was known or should have been detected through reasonable maintenance, the resulting damage is not covered
• Deferred maintenance — aging hot water tanks past design life, old roof at end of life, known foundation cracks
• Groundwater seepage through foundation cracks (without specific endorsements)
• Mold without a covered water event — mold from humidity, poor ventilation, or unknown sources
• Damage from unlicensed work — water damage caused by a DIY renovation or unlicensed contractor is typically excluded

The Sewer Backup Endorsement Is Worth It

If you own a home in the old city core of Toronto, older parts of East York, Leslieville, Parkdale, Cabbagetown, Riverdale, or combined-sewer neighborhoods in Scarborough (Agincourt, Woburn, West Hill), the sewer backup endorsement is almost non-optional. The typical cost is $30-$80 per year, and it covers one of the most common residential water damage claims in the GTA.

The Insurance Bureau of Canada publishes consumer guidance on these endorsements — worth reading if your current policy does not include sewer backup coverage.

How the Claims Process Works

Once you discover water damage, two things happen in parallel: you call your insurance company to open the claim, and you call a restoration company to begin emergency mitigation. Your policy's duty-to-mitigate clause expects you to start emergency work right away — extraction, drying, board-up — and covers reasonable emergency response as part of the claim.

The adjuster visits the property (or does a virtual inspection) within a few days for most claims. Scope of covered work is developed with the restoration company. Approved work is billed directly to the insurer in most cases — you typically pay only your deductible.

See our insurance claims page for full detail on the claims process.

Additional Living Expenses (ALE)

If water damage makes your home uninhabitable during restoration, your policy's Additional Living Expenses coverage typically pays for temporary accommodation, meals, laundry, and other costs beyond your normal expenses. ALE has sub-limits and time limits that vary by policy — ask your adjuster early in the claim if ALE applies to your situation.

If Your Claim Is Denied

Claim denials happen most often when the insurer classifies the damage as gradual rather than sudden, or when they argue the cause was deferred maintenance. If you disagree with a denial, you can escalate within the insurance company, hire a public adjuster to advocate on your behalf, or file a complaint with the Financial Services Regulatory Authority of Ontario (FSRA). The restoration company's documentation — moisture readings, photos, cause analysis — often makes the difference in reversing a denial.