John The Plumber provides reliable plumbing services across Markham, including Unionville, Markham Village, Cornell, Thornhill and surrounding communities. With over 20 years of experience, our licensed plumbers handle plumbing repairs, drain problems, installations and emergencies in everything from older Markham homes to newer residential properties. We are available 24 hours a day, 7 days a week, have earned more than 2,000 Google reviews across Ontario, and back qualifying parts and labour supplied and installed by us with a 2-year limited warranty.
Need plumbing help in Markham? Call 647-689-6205 for 24/7 service, or book online and save $20.
We explain the plumbing issue and provide the price before work begins, so you can decide whether you want to proceed.
Same-day plumbing service is available across Markham when scheduling allows.
With over 20 years of experience, our team has completed thousands of plumbing repairs, installations and service calls.
From older homes in established neighbourhoods to newer subdivisions, condos and commercial properties, our plumbers understand that plumbing systems and repair needs can vary across Markham.
Our plumbers have completed thousands of jobs involving leaks, clogged drains, toilets, water heaters, sewer lines, fixtures and other plumbing problems.
Our Markham plumbers are available 24 hours a day, 7 days a week for plumbing repairs and plumbing emergencies.
Your plumbing work is completed by qualified, licensed plumbers, and John The Plumber is fully insured.
We work in homes, condos and commercial properties throughout Markham, including Unionville, Cornell, Markham Village, Thornhill and surrounding communities.
John The Plumber has earned more than 2,000 Google reviews from customers across Ontario.
Parts and labour for materials supplied and installed by John The Plumber are covered by a 2-year limited warranty for defects in workmanship and failure of supplied parts under normal residential use and service conditions.
Drain cleaning and blocked drain services carry a limited 30-day warranty against recurrence of the same blockage under normal use conditions. Different terms also apply to customer-supplied materials, hose bib work and certain existing site conditions.
Markham includes older homes in Unionville, Markham Village and Thornhill, newer residential communities such as Cornell, high-rise properties and busy commercial areas. Our licensed plumbers provide residential and commercial plumbing services in Markham, from routine plumbing repairs to emergency work and new plumbing installations.
Our Markham plumbers are available 24 hours a day, 7 days a week for burst pipes, major leaks, sewer backups, overflowing fixtures and other plumbing emergencies. We identify the source of the problem and complete the emergency repairs needed to protect the property and restore the plumbing system.
Basement flooding and sewage backups are important concerns in parts of Markham, particularly established areas such as Unionville, Markham Village and Thornhill. We provide sewer line repair, camera inspections, sump pump services and backwater valve installation when appropriate for the property.
We repair and install water heaters throughout Markham. If your water heater is leaking, producing inconsistent hot water or reaching the end of its service life, we can inspect the unit and determine whether repair or replacement is the better option.
Our plumbers repair leaky faucets and install kitchen faucets, bathroom faucets, shower fixtures and other plumbing fixtures. We also complete fixture upgrades and plumbing installation during kitchen and bathroom renovations.
A sump pump or backwater valve can help protect certain properties from basement water and sewer backups. We inspect, repair and install these systems and can advise Markham homeowners when either option is appropriate for their home’s plumbing system.
For recurring clogs, grease buildup and heavy debris in drain or sewer lines, hydro jetting can provide a more thorough cleaning than basic drain clearing. Our Markham plumbers use hydro jetting technology when the condition of the pipe and type of blockage make it an appropriate option.
Backflow prevention helps protect the water supply from contamination caused by unwanted reverse flow. We provide backflow prevention services for qualifying residential and commercial properties in Markham, including installations, repairs and system upgrades where required.
We provide drain cleaning services for slow drains, clogged toilets, kitchen sinks, bathtub drains and recurring blockages. If a clog keeps returning, video camera inspections can help identify buildup, damaged underground pipes, tree roots or other problems deeper in the drain or sewer line.
A leaking pipe can cause damage before the source is obvious, especially in finished basements or behind walls. Our plumbers locate and repair leaking pipes, damaged fittings and other water-supply problems in Markham homes and commercial properties.
We handle clogged toilets, running toilets, leaks around the base, weak flushing and damaged internal components. Our plumbing services include fill valve replacement, flange repair, wax ring replacement and complete toilet installation.
Homes in established Markham neighbourhoods may have older plumbing or systems that have been modified during previous renovations. We can replace aging pipes, install new plumbing lines and relocate fixtures for bathroom, kitchen and laundry renovations.
We provide commercial plumbing services for offices, restaurants, retail spaces, clinics and other Markham businesses. Our plumbing work includes drain cleaning, pipe repair, fixture installation, water-supply problems, plumbing maintenance and emergency repairs.
When an underground drain or sewer line is damaged, trenchless repair can sometimes fix the problem without extensive excavation. This can be especially useful on established Markham properties where homeowners want to avoid unnecessary disruption to driveways, landscaping or finished outdoor areas.
John The Plumber proudly serves Markham and nearby communities with professional plumbing solutions. We cover:
Unionville, Box Grove, Cornell, Angus Glen, Berczy Village, Wismer Commons, Greensborough, and surrounding neighbourhoods.
Need plumbing help outside Markham? We also serve:
North York – Richmond Hill – Scarborough – Vaughan – Toronto – Mississauga – Etobicoke and other GTA communities.
We ask about the nature of the plumbing issue, your property type, and urgency. A main sewer backup in a historic Unionville century home, a pinhole leak behind a finished basement wall in Markham Village, or a stack issue in a Cornell modern townhouse each require a different diagnostic approach and toolset from the start.
Our licensed plumber tracks down the root cause rather than just treating surface symptoms. In established pockets like Thornhill, Unionville, and Markham Village, we look closely at aging galvanized or cast-iron piping, DIY legacy fixes, and modifications left behind by previous renovations that often trigger unexpected failures.
For slow floor drains, sewer smells, or basement water, we assess your vulnerability against known municipal risk factors. Because areas like West Thornhill, older Markham Village, and parts near the Rouge River corridor in Unionville have historical basement-flooding clusters, we pay close attention to your connection layout checking if a high-resolution camera inspection, backwater valve, or upgraded sump pump setup is required to protect your foundation.
We walk you through our findings, present the precise repair options available, and provide a firm, upfront price before a single wrench turns. You stay completely in control of the decision-making process.
Once you give the green light, our plumber executes the repair to strict code standards and stress-tests the system for proper flow, pressure, and zero leaks. For multi-unit condos or commercial spaces along Highway 7 or Kennedy Road, we coordinate seamlessly with property management regarding main building water shutoffs.
Before we pack up, we review what was fixed, how to maintain it, and what warning signs to monitor. All qualifying parts and labor supplied and installed by John The Plumber are backed by our solid 2-year limited warranty, with standard 30-day coverage applied to drain cleaning and clearings under normal residential use.
If sinks, tubs or basement drains keep backing up, the problem may be deeper in the drain or sewer line. This is especially worth checking in parts of Markham where basement flooding and sewer-backup concerns have been identified, including Unionville, Markham Village and West Thornhill.
Stains on ceilings, walls or finished basement surfaces can indicate a hidden leak. Small leaks behind walls or below finished areas can cause damage before the source becomes obvious.
Gurgling fixtures, sewer smells or water moving in nearby drains when another fixture is used can indicate a blockage, venting issue or developing sewer problem.
A higher water bill without a clear increase in usage can be a sign of a hidden leak, running toilet or leaking fixture somewhere in the home’s plumbing system.
A sudden drop in water pressure can point to a leaking pipe, valve problem, buildup or an issue with the water supply. In established Markham homes, older plumbing or previous renovations can also contribute.
One slow drain may be a local clog. If several fixtures are draining slowly at the same time, the problem may involve a larger section of the plumbing system or sewer line.
If your sump pump runs unusually often, stops working properly or you notice water collecting in the basement, the system should be inspected. This is particularly important for Markham properties in areas with known basement-flooding concerns.
Established Markham neighbourhoods can have older piping, previous renovations and plumbing that has been modified over time. When leaks, low pressure or recurring drain problems appear, it is important to inspect the existing system rather than assume the visible problem is the only issue.
They can be. The City of Markham has identified basement-flooding clusters and carried out flood-control work in areas including West Thornhill, Markham Village and Unionville. Recurring basement drain problems, sewage backups or water around floor drains should be investigated before they become more serious.
A backwater valve may be worth discussing if the property has experienced sewer backups or is in an area with known basement-flooding concerns. The valve is designed to help prevent sewage from flowing backward into the home, but the plumbing layout should be assessed before installation.
A sump pump can help remove groundwater that collects around or beneath a basement. It is most relevant for properties with a sump pit, previous basement water problems or drainage conditions that allow water to collect around the foundation.
Older homes may contain plumbing installed at different times or altered during renovations. Before replacing a pipe or relocating a fixture, a plumber should check how the existing lines connect, what materials are present and whether previous work affects the repair.
They can be. Newer homes are less likely to have aging plumbing, but they can still develop fixture leaks, clogged drains, water heater problems, installation defects or issues caused by renovations and homeowner upgrades.
Sometimes. If a repair requires access to a shared plumbing line, riser or building shutoff, the condo corporation or property manager may need to coordinate access. Problems limited to a fixture or plumbing inside the unit may not require the same level of coordination.
A recurring clog can indicate more than surface buildup. Possible causes include grease, damaged piping, root intrusion, poor flow or a problem farther down the sewer line. A camera inspection can help determine why the blockage keeps returning.
Watch for unexplained increases in water bills, damp drywall, ceiling stains, musty smells, reduced water pressure or the sound of running water when fixtures are off. Finished basements can make hidden leaks harder to notice because piping is often concealed behind walls or ceilings.
Repair may make sense when the problem is limited to a replaceable component and the tank is otherwise in good condition. Replacement may be more practical when the unit is leaking from the tank, repeatedly failing or approaching the end of its expected service life.
Whether you are dealing with a leak, clogged drain, sewer backup, water heater problem or another plumbing issue, John The Plumber provides reliable plumbing services across Markham.
Call 647-689-6205 or book online and save $20 on your service.
