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Sewer Backup and Home Insurance

Sewer backup coverage is typically an add-on to an Ontario home policy, not part of it by default. Knowing what you have, before water reaches the floor drain, makes everything after it easier.

  • About 2 minutes to read
  • Best timing: before the spring thaw
  • Tools: a flashlight and a notebook
  • Written for homeowners, not trades
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Open 7 daysEmergencies any hour

  • Licensed plumbers, details on request
  • Quote before any work starts
  • Pickering and Durham Region
  • Residential and commercial

The routine, in order

  1. Read your policy now. Look for a sewer backup endorsement and its limit. Overland water and sewer backup are often separate coverages in Ontario.
  2. Ask your broker about conditions. Some insurers reward, or even demand, protective gear such as a backwater valve, a sump pump or a backup pump.
  3. Keep records. Save receipts and permits for protective work, such as a backwater valve installation, and any camera inspection reports.
  4. If a backup happens, stay safe. Keep away from contaminated water, turn off power to the affected area only if it is safe to do so, and stop using water in the home.
  5. Document everything. Photograph the water, damaged items and the floor drain before cleanup. Note the time and weather.
  6. Call your insurer and a plumber. The insurer starts the claim; the plumber clears the line and identifies the cause.
  7. Keep the plumber's report. Whether it was a municipal surcharge, roots in your lateral or a blockage inside the house can matter to the adjuster.
Job note: Durham Region has offered a subsidy program for basement flooding protection. See our subsidy note before booking protective work.

Why this matters in Pickering

Pickering homes are connected to Durham Region's sanitary sewer, and during intense storms the system can surcharge. Water then pushes back up through basement floor drains, especially in older homes without a backwater valve. Lower-lying streets near the lake and older laterals with root problems add risk. Since many Pickering basements are finished living space, the cost of a backup can be considerable, and how your policy treats it matters a great deal.

Ask your broker these questions before a storm: is sewer backup covered, and to what limit?

Slips worth avoiding

  • Assuming standard home insurance covers sewer backup
  • Throwing out damaged items before an adjuster sees them or photographs exist
  • Waiting days to report a backup
  • Ignoring an old galvanized or lead service; older plumbing generally may draw closer questions from insurers, and lead water service replacement is worth planning
  • Skipping a camera inspection after a backup; without one, the cause stays a guess

Ask your broker these questions before a storm: is sewer backup covered, and to what limit? Is overland water covered separately? Does the policy have conditions on protective devices? A clear answer now spares a hard conversation later.

Time to ring a plumber

Call as soon as water appears at a floor drain, or when several fixtures drain slowly together. We will clear the line, tell you what caused it and give you written notes for the insurer. Afterwards, ask about protection: a backwater valve, a sump pump kept in working order and a plan for the lateral. It is also worth keeping a small plumbing emergency kit ready. This guide is general information only; your broker or insurer is the authority on your own policy.

Questions callers ask

Does home insurance cover sewer backup in Ontario?

Often only if you have added a sewer backup endorsement. Check your policy or ask your broker.

Does a backwater valve lower my premium?

Some insurers recognise protective devices. Ask your broker, and keep the installation records.

Related pages

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