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24 contractors listed ยท 11 in Thornhill ยท 13 open 24/7 ยท 20 open weekends ยท 21 rated 4.5+
Data verified October 18, 2026
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.
Of the 24 contractors we list here, 11 are in Thornhill itself and 13 come from towns including Toronto (4), North York (3) and Aurora (1). 23 of the contractors on this page have a rating, from 4.0 to 5.0 across 7,386 reviews; 15 have 50 or more reviews and 21 are rated 4.5 or higher. When customers rate these contractors on specific qualities, they most often praise professionalism (92%), quality (82%) and responsiveness (80%). The topics that come up most in reviews of the contractors on this page are "efficient", "price" and "estimates". 13 are open around the clock; 18 are open on Saturdays and 16 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). 10 show a licence on their websites. 6 have ten or more years of experience, the longest 30 years. 14 offer emergency call-outs; 1 offers financing or payment plans; 10 give free estimates; 5 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.
A website is linked by 22 of the 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.
