McPipe Plumbing Inc.
“I messaged Ethan first thing in the morning and he was super accommodating and was at my house a couple hours later.”
Best Drain Cleaning Services in Thornhill, ON
24 contractors listed · 6 in Thornhill · 19 open 24/7 · 23 open weekends · all 24 rated 4.5+
Data verified October 18, 2026
Drain Jobs Inc.
“Mike was able to tell me what my issue was over the phone without even seeing it.”
Eco Plumbing and Drain
“We have been using their services for few years now and it has been smooth and great experience.”
Sewer-Man Sewer & Drain Repair GTA
“I've used Sewerman for a few plumbing related issues including drain repair, and I have to say, I can't be happier.”
The Maple Roots
“Called the maple roots they came right away and fix the problem.”
Alfa Plumbing & Radiant Flooring
“Theyve done couple-new build houses for us , they were always on time , with all professionalism and great pricing .”
The 24 companies listed for Thornhill, ON clear blocked drains and sewer lines. Hours, jetting and camera work, and free estimate claims come from each company's own website. Ask whether the crew that arrives owns the camera, since that decides what you learn.
Area overview: Thornhill, ON
6 of the 24 contractors we list are based in Thornhill; the other 18 serve Thornhill from towns including Toronto, North York and Etobicoke. The contractors on this page are rated from 4.6 to 5.0 across 8,082 reviews; 20 have 50 or more reviews. When customers rate these contractors on specific qualities, they most often praise professionalism (93%), quality (80%) and responsiveness (78%). The topics that come up most in reviews of the contractors on this page are "price", "efficient" and "estimates". 19 are open around the clock; 21 are open on Saturdays and 21 on Sundays. The services the contractors on this page list most often on their websites are sump pump (3), emergency plumbing (2), plumbing installation (2) and tree root removal (2). 12 show a licence on their websites. 8 have ten or more years of experience, the longest 30 years. 20 offer emergency call-outs; 1 offers financing or payment plans; 15 give free estimates; 6 are family- or locally-owned and 5 list coupons or special offers. We count these figures across the contractors on this page; hours and prices change, so confirm the details with the contractor before you book.
What can I learn from these companies' websites?
A website is linked by all 24 listings for Thornhill. Look for two things: whether they own a jetter and a camera or hire them in, and whether they do repairs as well as cleaning. A company that only cables will be back at the same line next year.
Rooter Team Inc
“The access to the valve was not easy, but Eugene cut it out neatly and now I have no problem reaching the shut-off valve with no issues.”
Drain King Plumbers Toronto
“Both John and David who came to service our clogged kitchen sink were very professional, courteous and completed the job efficiently.”
True Service Plumbing
“Great job quick clean and efficient and good pricing George & Mohammed did thorough check also checked my faucets to make sure it's good !”
R.e.s. Plumbing & Drain Services
“Excellent service: professional from initial contact, timely service, great price and quality work.”
Refined Home Services
“Yanky was very informative and helpful.”
Beaches Bluffs Leslieville Plumbing & Drains
“We highly recommend Bbl Plumbing and Drains because we trust him with all of the plumbing problems that arise from older homes and since then he's generally a pleasure to work with and his team.”
Drain 1 Plumbers Inc.
“I have used Drain one a number of times and would highly recommend”
Advanced Plumbing Drains & Heating
“The job was well executed and I appreciated how Ian explained what he was recommending and why, and then checked with me before proceeding.”
Santos Water
“Amadeus is the best you can get, he help me just with a phone call, thank you very much.”
Rooter-Man
“Jerome came in prompt time and quickly scoped my drain line with the camera and was able to clear the drain line without any issue.”
Mersey Heating and Air Conditioning
“He fixed, cleaned the clogged and checked to ensure no more water leaked from my AC.”
A to Z Plumbing and Drain
“It's professional, timely, reasonably priced and the technicians are great - would highly recommend.”
Reliable Source Plumbing & Drains Ltd
“I required is urgent Services and he was punctual, quick and cleared our problems.”
Plumbers Direct
“Joyce was extremely helpful and had a plumber out within a couple of hours of calling.”
Drainworks Plumbing
“We had a drain problem, we were quoted a price, they fixed the clog , cleaned up and charged exactly what was expected.”
Grizzly Plumbing and Heating Inc
“I love Grizzly Plumbing: they are small enough not to overcharge for overhead but totally professional.”
Dr. Plumbing Inc.
“Mark from Dr Plumbing Inc was able to diagnose and fix my leaking shower faucet issue well within an hour by swapping out the shower cartridge and other hardware.”
Aras Plumbing Aurora Office
“Even late at night, these guys came right away and fixed everything quickly.”
Why these companies made our list
What customers say about contractors in Thornhill
- “I had all of my plumbing issues fixed immediately and they were friendly, knowledgeable and professional.” — customer of The Maple Roots
- “My appointment was booked promptly and when Ethan arrived he was very professional, polite and efficient.” — customer of McPipe Plumbing Inc.
- “Mike is extremely professional, and honestly goes out of his way to save his clients money.” — customer of Drain Jobs Inc.
- “I would definitely recommend everyone call Maple Roots for all of your plumbing needs!” — customer of The Maple Roots
Excerpts from public reviews of the contractors listed on this page.
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