One Stop Plumbing
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One Stop Plumbing
One Stop Plumbing Limited is a leader in the plumbing industry. Since opening our doors, we've established ourselves as a tested and trusted service provider, committed to fair pricing, transparent business practices, and top-quality service. We're proud to offer the largest selection of plumbing parts in the region.

Toilets, gas pipes, water softeners, bath drains: all are available at our shop in Kitchener. Whether you're completing a large-scale bathroom remodel or need a unique replacement part for your toilet, we're confident we'll have the appropriate range of products for you. Our vast inventory provides a near-unlimited of product choices for all types of plumbing systems.

Don't worry about feeling overwhelmed, though: Our friendly team of plumbing technicians will be there to answer any questions you may have and to help find the right part for you. With their expert guidance, you can bet you'll get precisely what you need.
Reviews (10)
Horst Weiler
Horst Weiler
Dec 20, 2021
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Positive: Professionalism, Punctuality, Quality, Responsiveness, Value
I have been in the renovation business for 38 years and have been dealing with One Stop Plumbing all along.
Not only do they stock parts that are almost impossible to find anywhere else, but they have the knowledge and experience to source almost any parts still available anywhere.
Corry Flatt
Corry Flatt
Nov 17, 2021
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Very knowledgeable and helpful! I brought in a failed faucet cartridge and she not only instantly knew it, she had it in stock and even modified it for the cold side. Amazing!
David Williams
David Williams
Oct 31, 2021
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Super helpful on several occasions! They know their stuff and can help you figure out what needs doing and how to do it. Way better than the big chain stores!
Dan Collins
Dan Collins
Jun 11, 2021
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Polly was a great help with my old outdoor facet stem...she didn't have stock of a new one..so she offered to remove the stripped screw and install a new washer...I left it with her and she called a couple hours later to say she had replaced the washer and it was ready to pick up. I installed it and no leaks...Polly was very pleasant and nice to deal with...
Manny Singh
Manny Singh
May 14, 2021
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Jeff was AMAZING! He didn't even charge me for the part I needed badly. It was only $1 but again he could've said I needed to pay for it. Thanks a million for your kindness.
My water softener is all fixed and running...thanks again for helping me out.
Smg Bins
Smg Bins
May 12, 2021
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The Customer Service is amazing, even though she was extremely busy she took the time to help me find everything I was looking for. They have a big inventory of plumbing supplies and she even stayed later then the closing to help us out. Thank you !
Richard Anderson
Richard Anderson
Apr 14, 2021
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I needed two bonnets that would fit to hold escutcheons on an old sink. The owner had the bonnets and even cut a small copper pipe I needed to thread into the existing stems, making sure the cut pipe' s threads would work.
He went the extra mile for a first-time customer who could have shrugged me off like many other specialty stores I, a non-specialist, have visited.
He adopted my problem as his own, and I am still stunned at his professionalism.
He charged me $20.00; I gave him $30.00. I should have given him a bigger tip. He deserved it.
Bob Moran
Bob Moran
Apr 13, 2021
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The Best Plumbing Store...Period!
I had just spent a long time on the phone with a KW Pool Store explaining a fitting I needed for an emergency leak repair, but they didn't understand what I required.
I decided to try One Stop Plumbing for the fitting.
The kind and professional lady at the counter found the exact fitting I needed in about 30 seconds! Thank to her I fixed my pool leak emergency for less than $10!
I have visited One Stop Plumbing before and they have always had exactly what I needed.
I highly recommend One Top Plumbing over the big box or online stores for all plumbing needs
Stevie Z.
Stevie Z.
Mar 31, 2021
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Needed some parts for an early evening emergency plumbing repair. The lady that was there kept the shop opened for a short while after their closing time to allow me time to get there. I walked through the door, told her what I needed and within minutes had a pile on the counter of everything I would need. Incredibly knowledgeable, very friendly and invaluably helpful, and only cost literally PENNIES over what they would have charged at one of the 'big boxes'. This isn't the first time this store has saved my plumbing bacon, and they've earned my business forever. Go here before you go anywhere
John Banman
John Banman
Sep 04, 2020
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Exceptional service! I had a plumbing problem that needed some parts to repair. Big box stores didn't have the part and sent me here. I called after hours (unknowingly) and the store owner picked up the phone to help. They waited (~20 m ins) till I got there to buy what I needed before closing the store. Amazing customer service! And I fixed my plumbing issue.