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About Us.

Why our Clients love to work with us.

Smart, fast & reliable

Plumb Inc. is a licensed and insured plumbing company, serving Toronto and GTA with more than 35 years of experience in residential and commercial plumbing.

Plumb Inc. was founded by John Kostopoulos, a master plumber with over 35 years of experience. His exceptional skill as a plumber and his unbeatable customer service, have solidified John as one of the best and most sought after plumbers in the GTA. Under his leadership PLUMB INC. has flourished into an exceptionally successful company with countless satisfied customers.

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Our plumbing projects start with quality materials and finish with high quality craftsmanship.


It is a point of pride for us to deliver consistently superior plumbing work on time and on budget.


Our plumbing business is built on customer satisfaction, loyalty and confidence in an honest day’s work.

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