View Profile
Adam Macdonald Plumbing Inc.
- Work
- Questions
- Sewer
“Adam MacDonald Plumbing took on the difficult task of extensively re-plumbing my 2nd story bathroom when my original plumbing company was very reluctant to take on the task.”
Best Plumbers in Cornwall, ON
24 contractors listed · 6 in Cornwall · 1 open 24/7 · 5 open weekends · 19 rated 4.5+
Data verified October 18, 2026
View Profile
Iron Fort Construction & Renovation
- Basement
- Foundation
- Call
“This was SO GREATLY APPRECIATED, it was a long weekend and we all have Families, but these mishaps do happen and it was such a relief to know that in an event like this, there was help.”
View Profile
Aurele St-Jean Plumbing
- Price
- Couple
- Call
“The guys did a really good job.”
View Profile
Laframboise Mechanical-Electrical Ltd
“Highly recommend”
View Profile
Little Digger
- Soil
“This last storm was a nightmare March 2017 , Mike goes above & beyond to clear the yard in great time, totally recommend his company , we have never had to call to have yard cleared, Thanks again Mike for your outstanding overnight service !!”
View Profile
Lupien Jean Plumbing
- Faucet
“He listened to her issue and helped her get in touch with the right people.”
Listed for homeowners in and around Cornwall, ON, these 24 companies cover plumbing work. Hours, licence claims and free estimate offers come from each company's own website. Ask about provincial workers compensation coverage too, since the work happens inside your home.
Area overview: Cornwall, ON
6 of the 24 contractors we list are based in Cornwall; the other 18 serve Cornwall from towns including Long Sault (8 km), St-Albert (41 km) and St Andrews West (11 km). The contractors on this page are rated from 4.0 to 5.0 across 1,138 reviews; 4 have 50 or more reviews and 19 are rated 4.5 or higher. When customers rate these contractors on specific qualities, they most often praise professionalism (88%), responsiveness (81%) and quality (79%). 1 is open around the clock and 5 are open on weekends. 4 show a licence on their websites and 1 lists staff certifications (WETT). 6 have ten or more years of experience, the longest 25 years. 4 offer emergency call-outs; 1 offers financing or payment plans; 3 give free estimates; 4 are family- or locally-owned and 1 lists coupons or special offers. We have a website on file for 18 of the contractors on this page; 13 publish a contact page and 16 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.
How many listed plumbers say they are licensed?
4 of the 24 plumbing listings here show a licence on their websites. Confirm it with the provincial body that issued it rather than accepting the website. A company that does not say so may still be licensed, so ask on the phone and note the number before the first visit.
View Profile
Adam Beehler Plumbing Inc
- Polite
- Business
- Work
“They did an excellent job at identifying the problem and installing a new hot water heater and fittings at a fair price, will be calling again, thank you.”
View Profile
Abcd Sanitation
- Porta Potty
- Message
- No Call no Show
“I did not want to stress the septic on this seasonal camp from being there so long, so I rented a portajohn from ABCD after they were highly recommended in the community's FB page.”
View Profile
The Water Heater Guy
- Morning
- Quality
- Happy
“Having been left with no hot water for a week while my Home Warranty company was searching for a technician who is able to visit, I suggested finding one myself to which they agreed.”
View Profile
Cotnam Plumbing Inc.
- Price
“Upgraded a beat up old sump system with 2 poorly installed pumps + a battery back up system - to 2 New pumps - main + back up - fully hard plumbed to the outside drain - Great Work - Great Solutions - quick - responsive - professional !”
View Profile
E W Pryer Plumbing
- Job
- Cost
“I'll be contacting you again for my future plumbing needs!”
View Profile
Chollet Mechanical
“Service was quick and efficient, very professional and well priced.”
View Profile
Capital Mobile Steam Cleaning Ltd
“Pete and his men do a great job all the time.”
View Profile
Morrisburg Plumbing & Heating Ltd
- Response Time
“The woman I rent from had a emergency extra bathroom put in at the start of the pandemic and it was done by quickly , efficiently and I thought the price was way more than fair...”
View Profile
C&C Plumbing
- Basement
- Toilet
“Amazing work, Charles came same day to fix our broken tub knob handle and broken faucet handle, he sure got a handle on the situation quickly wasting no time to start the job, he was completely finished in what seemed like under an hour, he demonstra...”
View Profile
Richer Pierre Plumbing
“I have dealt multiple times with Richer Pumbing when I was living in Crysler and now in Casselman.”
View Profile
Williamsburg Pump Supply & Service (Wpss)
“Specialized in solving water quality issues such as hardness, iron, sulfur and bacterial contamination through water softening, specialty filters and disinfection systems”
View Profile
D-Tail Plumbing Ltd.
“The work done is always top-notch!”
View Profile
Ouimet Plumbing
“Robert was professional, courteous and truly conscientious.”
View Profile
Fondations Deguire
“Professional work”
View Profile
GNS Plumbing & Heating
View Profile
Jason Munro Plumbing and Heating
- Price
- Furnace
- Hvac
“Although it wasn't safe on the roads to travel overnight, this company took the time to contact me and walk me through what I could do to get us by and keep the damage minimized until they could arrive safely the next morning.”
View Profile
Chasco Plumbing
“Thank you for installing our new faucet.”
View Profile
Maynard's Plumbing
“Awesome service, thank you Jesse!!”
Plumbing Services in Cornwall, ON Cost Estimates
Minimum cost
$134
Maximum cost
$1154
National Average
$432
Avg Per Hour Rates
$173
$242
$631
Typical price range is based on 300 cost profiles
Why these companies made our list
Is this page useful? Yes
No
Is there anything wrong with this page?
