Introduction
Markham, part of York Region in the Greater Toronto Area, is home to more than 340,000 residents. With rapid suburban growth, older neighbourhoods, and moderately hard water supplied from Lake Ontario, homeowners face a range of plumbing challenges. From scale buildup in appliances to seasonal flooding, proper maintenance keeps Markham homes running smoothly.
Water Source, Quality & Hardness
- Source: Markham’s water comes from Lake Ontario, treated through Toronto and Peel Region facilities. The supply is disinfected with chloramination (chlorine plus ammonia) for safety. (Markham.ca)
- Quality: Regular testing confirms that Markham’s water meets all standards under Ontario’s Safe Drinking Water Act.
- Hardness: Markham water is moderately hard at 7–9 gpg (123 mg/L CaCO₃) (Aquatell).
- Scale deposits form on fixtures and in kettles.
- Dishwashers and hot water tanks wear out faster without maintenance.
- Many residents install water softeners to extend appliance life.
Housing Stock & Plumbing Systems
- Older neighbourhoods (Unionville, Markham Village): Mix of copper and some galvanized steel piping; older sewer laterals may need replacement.
- Suburban growth (Cornell, Wismer, Greensborough): PEX and copper piping dominate, with sump pumps and modern drainage.
- High-rise condos (Downtown Markham, Highway 7 corridor): Shared stacks and booster pumps affect multiple units when problems arise.
- Rural fringe: Some properties rely on private wells and septic tanks.
Common Plumbing Issues in Markham
- Scaling and mineral deposits — visible on taps, shower heads, and appliances.
- Hot water tank sediment — buildup shortens tank life and efficiency.
- Frozen pipes — during harsh winters in uninsulated garages or exterior walls.
- Sewer backups — tree root intrusion in older clay laterals.
- Well and septic maintenance — required in rural parts of Markham.
Seasonal Considerations
- Winter: Frozen pipe risk during extended cold snaps.
- Spring: Rain and snowmelt can stress sump pumps and drains.
- Summer: Thunderstorms occasionally cause localized flooding.
- Fall: High rainfall raises sewer backup risks.
Plumbing Costs in Markham
Most plumbers in the GTA, including Markham, charge a minimum service call of around $300 before tax, which covers the first hour or inspection.
Typical Plumbing Prices in Markham
| Service | Low | Typical | High |
|---|---|---|---|
| Drain unclogging | $300 | $400 | $700+ |
| Faucet replacement | $300 | $450 | $850+ |
| Hot water tank replacement | $1,400 | $2,000 | $3,500+ |
| Emergency after-hours call | $450 | $700 | $1,200+ |
⚠️ Disclaimer: Prices are estimates. Costs vary by plumber, job complexity, and permit needs.
Local Permits & Regulations
- Permits required for new plumbing installations, fixture relocations, and drainage system changes.
- Permit fees: The City of Markham lists a minimum building/plumbing permit fee of $125 for residential projects. (Markham Fee Schedule)
- Larger projects are charged based on job value and fixture count.
- Inspections are mandatory for permitted work.
- Minor like-for-like repairs (e.g., faucet swap in the same location) usually don’t require a permit.
Case Study: Hot Water Tank Replacement in Unionville
A Unionville homeowner noticed discoloured water and poor hot water pressure. A plumber discovered heavy sediment buildup in the 10-year-old hot water tank, caused by mineral-rich water. The tank was replaced and a water softener installed for a total cost of $4,200. Since then, the homeowner reports clearer water and more consistent hot water supply.
FAQs
Is Markham water hard?
Yes. Moderately hard at ~7–9 gpg, which leads to scale buildup.
Do I need a water softener in Markham?
It’s recommended, especially for hot water appliances.
What plumbing risks are most common?
Scale deposits, hot water tank sediment, and sewer backups in older neighbourhoods.
How much does a plumber cost in Markham?
Expect around $300 minimum, with higher costs for complex or emergency jobs.
Who issues plumbing permits in Markham?
The City of Markham Building Division.
Tips for Markham Homeowners
- Install a water softener to reduce scaling.
- Flush hot water tanks yearly to extend lifespan.
- Insulate pipes before winter.
- Test sump pumps before spring thaw.
- Confirm permits before renovations.
Conclusion
Markham homeowners face scaling from moderately hard water, sediment in hot water tanks, and frozen pipe risks in winter. With preventive care, proper permits, and timely plumbing upgrades, you can avoid costly emergencies and keep your home safe.
👉 Book a licensed plumber in Markham today at unclogit.com or call 604-496-1661.
