Does Insurance Cover Water Damage in Ontario? (2026) | GetAHomePro
Does Home Insurance Cover Water Damage? What Ontario Homeowners Need to Know
·4 min read
L
Lisa NguyenGeneral Contractor & Renovation Specialist
Published March 21, 2026
Key Takeaway
Does home insurance cover water damage in Ontario? What is covered, what is not, sewer backup endorsements, how to file a claim, and why claims get denied.
Water damage is the #1 home insurance claim in Canada. Yet thousands of Ontario homeowners discover their damage isn''t covered. Here''s what your policy actually says.
What Standard Ontario Policies Cover
Standard policies cover water damage that is sudden and accidental:
Burst pipes from freeze-thaw
Appliance overflow (washing machine hose failure)
Accidental toilet tank crack
Roof damage from storms (water entry follows storm event)
Major Ontario insurers — Intact, Aviva, Desjardins, TD Insurance, Co-operators — all include sudden/accidental coverage. Limits and deductibles vary.
What Is NOT Covered
Gradual Leaks and Seepage
Slow leak dripping for months? Denied. Insurer calls it "lack of maintenance."
Groundwater and Foundation Seepage
Water entering through the foundation from soil saturation = not covered.
Overland Flooding (Without Endorsement)
Rising water from rivers or extreme rainfall = not covered without specific rider.
Sewer Backup (Without Endorsement)
Municipal sewer backs up through your floor drain = not covered without rider. One of the most common surprises.
Maintenance Failures
18-year-old hot water tank finally fails? May be denied as foreseeable.
Licensed General Contractor, LEED Green Associate, 14+ years experience
Lisa Nguyen is a licensed general contractor and LEED Green Associate with 14 years of experience managing residential renovation and remodeling projects. She brings expertise in kitchen and bathroom remodels, basement finishing, and sustainable building practices.
Unoccupied 30+ days and pipes burst? Coverage voided or severely limited.
Sewer Backup Endorsement — Buy This
Cost: $50-$100/year. Covers cleanup, damaged materials, personal property, temporary accommodation when sewer backs up.
Urban infrastructure in Toronto, Hamilton, London, Ottawa is aging. Heavy rainfall overwhelms combined sewer systems. Sewage reverses through your basement floor drain.
Watch for sublimits: Some policies cap at $25,000-$50,000. If you have a finished basement, make sure the limit is adequate.
For $50-$100/year, refusing this is one of the most expensive decisions you can make.
Overland Flooding Endorsement
After the 2013 Calgary floods ($1.7B in insured losses), insurers began offering this. Covers surface water entering through doors, windows, or vents from rivers, creeks, or extreme rainfall.
Available from: Intact, Aviva, Co-operators, TD Insurance, Desjardins. Geographic restrictions in high-risk zones.
How to File a Claim (Step by Step)
Stop the water source — shutoff valve, immediately
Document everything — photos, video, every room, every angle, BEFORE cleanup
Call your insurer within 24-48 hours — prompt notification required
Arrange emergency mitigation — IICRC-certified restoration company
Work with the adjuster — be present, walk every room
Review the settlement carefully — don''t accept the first number
Insurer Claims Lines
Intact: 1-866-464-2424
Aviva: 1-866-692-8482
TD Insurance: 1-833-770-4678
Desjardins: 1-800-463-7830
Co-operators: 1-877-682-5246
ACV vs RCV — This Costs You Thousands
ACV (Actual Cash Value): Pays what damaged items are worth TODAY minus depreciation. 7-year-old floors that cost $15K → ACV might be $7K.
RCV (Replacement Cost Value): Pays what it costs to replace TODAY. Same floors = $15K.
Ask your broker: "Does my policy pay ACV or RCV for contents? For structure?" The difference is tens of thousands.
Common Denial Reasons
Delayed notification — waited 2+ weeks to report
Pre-existing damage — adjuster finds old water stains near the same pipe
Lack of maintenance — appliance well past expected lifespan
Unlicensed contractor — previous plumbing work by unlicensed person failed
Failure to mitigate — didn''t take reasonable steps to prevent further damage
When to Hire a Public Adjuster
For claims over $30,000, consider it. Public adjusters work for YOU (not the insurer), charge 10-15% of settlement, and typically recover 20-50% more than self-filed claims.
GetAHomePro connects Ontario homeowners with verified water damage restoration contractors. Get matched fast — the first 24 hours matter most.
FAQ
Does home insurance cover water damage in Ontario?
Sudden and accidental — usually yes (burst pipe, appliance failure). Gradual leaks, groundwater, and flooding without endorsements — no.
Do I need sewer backup insurance?
Yes. It costs $50-$100/year and covers one of the most common and expensive water events in Ontario. Without it, you pay everything out of pocket.
How long do I have to file a water damage claim?
Report within 24-48 hours. Most policies require "prompt notification." Delays can result in denial.
Will filing a claim increase my premiums?
Potentially. For minor damage under $3,000 with a $1,000+ deductible, consider paying out of pocket. For major damage, always file.
Can my insurance company deny my claim if I used an unlicensed contractor?
Yes. If damage resulted from work done by an unlicensed or uninsured contractor, many policies exclude coverage. Always verify credentials before hiring.