DLG Plumbing Ltd.
“DLG replaced my kitchen faucet cartridges, and replaced my toilet flush valve, flapper, and noticed a leak in the supply line that I had missed.”
Best Drain Cleaning Services near Alliston, ON
2 of these contractors are based in Alliston; the others serve Alliston from towns including Tottenham (15 km), Bradford (24 km) and Essa (13 km).
2 open 24/7 · 7 open weekends · 14 rated 4.5+ · 3 show a licence
Data verified October 18, 2026
Van Leeuwen Plumbing
“Contacted Lee for a water leak in the morning , came by the house to see what parts needed, Had Zach come by with the parts 1/2 hour later.”
M.a.c. Stewart Plumbing
“Mark installed our sewage pump, and we couldn't be happier with his work.”
Pedrosa Plumbing Inc
“We have used him several times for home upgrades and repairs - he is very attentive to detail, reviews the manufacturer's instructions, and is efficient.”
Plumbs Up Plumbing
“Ryan and Cesar installed 3 new toilets and converted our ensuite vanity plumbing to a double sink.”
SMD Plumbing Services
“We have hired Simon a few times recently to move plumbing, install a whole home UV light system and sediment filter, and install new tub fixtures.”
The 15 companies listed for Alliston, 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: Alliston, ON
The 15 contractors on this page are rated from 4.3 to 5.0 across 395 reviews; 2 have 50 or more reviews and 14 are rated 4.5 or higher. When customers rate these contractors on specific qualities, they most often praise professionalism (90%), quality (85%) and responsiveness (78%). The topics that come up most in reviews of the contractors on this page are "price" and "efficient". 2 are open around the clock; 7 are open on Saturdays and 4 on Sundays. The services the contractors on this page list most often on their websites are commercial plumbing (2), renovations (2) and residential plumbing (2). 3 show a licence on their websites. 6 have ten or more years of experience, the longest 20 years. 4 offer emergency call-outs; 1 offers financing or payment plans; 5 give free estimates; 8 are family- or locally-owned and 1 lists coupons or special offers. We have a website on file for all 15 of the contractors on this page; 11 publish a contact page and 7 list a public email. We count these figures across the contractors on this page; distances are straight-line, and hours and prices change, so confirm the details with the contractor before you book.
Are any of the listed drain crews available overnight?
Overnight availability is claimed by 2 of the 15 listings here. A backup that has reached a finished basement floor is worth the night rate, because standing sewage is a health problem rather than an inconvenience. A slow sink is not. Ask what the after-hours charge covers before agreeing.
A & L Plumbing & Heating
“A pipe was blocked, we couldn't use the water, they diagnosed and cleared it asap.”
Regional Septic Service
“His skill and expertise helped our plumbers find access to a third septic lid we didn't know existed (which was filled to the brim with sludge).”
MGS Plumbing
“He arrived the next day and got the job done quickly and professionally.”
Umbrella Waterproofing Plumbing and Drains
“My husband and I are very pleased with the waterproofing service provided by the team.”
GJ Custom Contracting Inc
“Had some renovations at my house and the team has great attention to detail!”
T.m.g Plumbing Systems
“.Chris, was more then knowledgeable, he saw the pics, offered to drop by and same day completed the work in a few hours”
Loc Pave
Gary Woodcock & Sons Plumbing
“We have used this family owned business several times, they are our go to people for any plumbing, heating and cooling matters!”
De Sousa Plumbing
“I had a major leak late on a Saturday night and Kevin was able to come and stop the leak and repair the shower the same night.”
Why these companies made our list
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