After a leak or flood, the next worry is usually whether insurance will pay. In Ontario, the answer depends on what caused the water and which coverages are on your policy. This guide explains what is typically covered, what isn’t, and how to file a water damage claim in Mississauga without leaving money on the table. This is general information, not legal or insurance advice. Always read your own policy wording or ask your broker.
What Ontario Home Insurance Usually Covers
Most standard homeowner, condo and tenant policies cover water damage that is sudden and accidental, for example:
- A pipe that bursts or splits
- A water heater that fails and floods the basement
- A washing machine or dishwasher hose that breaks
- A toilet or sink supply line that lets go
- Water from firefighting
What’s Usually Excluded (Unless You Added It)
| Cause | Typically covered? |
|---|---|
| Sewer backup through floor drains | Only with a sewer backup endorsement |
| Overland flooding (rain/river water entering at ground level) | Only with an overland water / flood endorsement |
| Groundwater seeping through foundation | Often excluded; some flood endorsements include it |
| Slow, long-term leaks | Usually excluded (seen as maintenance) |
| Frozen pipes in a vacant or unheated home | Often excluded unless heat was maintained or water shut off |
| Mould from an old, unreported leak | Usually excluded |
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How to File a Water Damage Claim, Step by Step
- Stop the water and make it safe. Your policy expects you to prevent further damage. Shut off the main valve and call for emergency mitigation.
- Document before cleanup. Photos, video, the source of the water and damaged items. Keep the broken part (pipe section, hose, valve) if you can.
- Call your insurer or broker as soon as possible and get a claim number.
- Start mitigation right away. You usually don’t need to wait for an adjuster to begin extraction and drying. Delaying can actually reduce your coverage if the damage gets worse. Keep all receipts.
- Make an inventory of damaged contents with approximate age and value.
- Meet the adjuster with your restoration company’s moisture logs, photos and scope of work.
- Review the estimate line by line. Ask questions about anything missing, such as baseboards, paint to the nearest break, or contents cleaning.
Can I Choose My Own Restoration Company?
Generally, yes. Your insurer may recommend a preferred vendor, but in most cases you can choose who works in your home. Choose a company that documents everything clearly, follows the IICRC S500 standard and can talk directly with your adjuster. See how to choose a restoration company.
Tips to Avoid a Denied or Reduced Claim
- Report quickly. Late reporting is a common reason for disputes.
- Don’t throw away damaged items until the adjuster has seen them or approved disposal with photos.
- Keep your deductible in mind: small leaks under $2,000–$3,000 may not be worth claiming.
- Ask your broker about adding sewer backup and overland flood endorsements now, before the next storm.
- Install a backwater valve and sump pump. Some insurers offer discounts, and the City of Mississauga offers rebates of up to $10,500.
Related Guides
- Water damage restoration cost in Mississauga
- Sewage backup cleanup
- Flooded basement: first 24 hours
- Water damage restoration in Mississauga: our services
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