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How To Find a Qualified Plumber in Ontario

In Ontario, plumbing is a compulsory trade. That means people doing plumbing work for hire must hold a certificate of qualification or be registered apprentices working under supervision. Checking credentials takes a few minutes and protects you.

What to check

  • Certificate of Qualification for plumbers (Skilled Trades Ontario public register)
  • TSSA-recognized gas certification for gas appliance work
  • Liability insurance
  • WSIB coverage where applicable
  • Business licence requirements in your municipality

Research

  • Read reviews on more than one platform
  • Ask neighbours and friends for recommendations
  • Look for clear, written quotes

Red flags

  • Pressure to decide immediately
  • Cash-only with no written quote
  • Refusing to pull required permits
  • No proof of certification

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