Prevent inside water damages

Water damage is the leading cause of home insurance claims in Quebec. Here are some tips to prevent water damages from inside your residence.

Water entry point

  • Make sure everyone who lives in the house knows where the water entry point is located.

Washing machine and dishwasher

  • Don't leave the house when they are on.
  • Check the condition of the water hoses.

Hot water tank

  • Consider replacing it after 10 years; otherwise, inspect it regularly.


  • Heat well to prevent pipes from freezing and bursting.

If you're away from home for several days during the winter

  • Turn off the water and drain the pipes.
  • Ask someone to keep an eye on your home if you're away for more than four days to make sure that, among other things, your heating system is working.

Sump pump

  • Have it checked by a plumber to make sure it's working well.

Mainline backflow valve

  • Mechanism that prevents water overflow from a municipal sewer from backing up into the basement of your home. The backwater valve closes automatically when sewers back up.
  • Have it checked by a plumber to make sure it's working well.
  • Check with your municipality whether there's a by-law that requires this mechanism to be installed.

In-pipe check valve

  • Mechanism that prevents waste water from backing up into your basement. However, it won't prevent waste water from backing up into basement sinks, toilets, showers and laundry tubs.

Find out more

Handbook for Reducing Basement Flooding (2010) from the Institute for Catastrophic Loss Reduction


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