Residential · Sump pits & flooding
Sump Pump Repair in Markham
A sump pump that stops working does so at the worst moment: in the middle of a storm. Repairs are often simple, but they should not wait for the next downpour.
- Union fitted so the next pump swap is quick
- Pit filled by pail so float, pump and check valve prove themselves
- Discharge traced away from the foundation
- Spring and summer storm calls taken first
- Licensed plumbers (details on request)
- Price agreed before work
- Call-only, no forms
- Tested before we leave
Signs you need sump pump repair
The pump runs constantly even when the weather is dry. The motor drones yet the pit level stays put. It cycles on and off each few seconds. The pit is full and nothing happens. There is a grinding or rattling sound. Water is sitting on the floor near the pit. Each symptom points somewhere specific, which is why we start by listening and watching before reaching for a wrench.
Our routine on the day
We check power first: the outlet, the breaker and any GFCI device upstream. Next comes the float. Floats get stuck against the side of the pit, tangled in cords, or blocked by debris, and a stuck float is one of the most common faults we see. Then we look at the check valve, because a failed one lets water fall back and makes the pump short-cycle.
With the pump lifted out, we inspect the intake screen and impeller for gravel, silt or small objects. A worn motor or seized impeller usually means replacement is better than repair, and we tell you so plainly. When the fix is complete, we fill the pit with water and observe several full cycles to confirm the switch, motor and discharge all behave.
Markham houses and what shapes this job
Many Markham pits were set by builders in the 1990s and 2000s, so original pumps in places like Cachet, Swan Lake and Legacy are reaching the end of a reasonable working life. Hard water can leave mineral deposits on floats and switches, and silt from clay soils settles in pits without a proper liner or stone surround.
Discharge lines cause their own troubles. In winter, a line that exits low or sags outside can freeze, leaving the pump pushing against ice. In summer, a buried discharge can be crushed by landscaping or blocked by roots. We follow the line outside to check the full route.
Basements that have been finished around the pit sometimes leave too little room to service it. Where we can, we suggest a removable panel or a sealed lid with an access port so future checks are easy.
Ring us without delay if
Call immediately if the pit is close to overflowing during rain, or if the pump has failed and a storm is forecast. In the meantime, a wet vacuum or a borrowed utility pump can buy time. If the original is past saving, our sump pump installation page explains replacement, and a battery backup is worth adding at the same visit.
Hard water can leave mineral deposits on floats and switches, and silt from clay soils settles in pits without a proper liner or stone surround.
From the job notes of Plumbers in Markham
Job card · Sump pits & flooding
On the van for this job
- Submersible and pedestal pumps sized to the pit inflow
- Float switches and alarm sensors
Signs you need this
- Motor humming while the pit stays full
- A clunk from the check valve every cycle
What we check before we pack up
- Fill the pit with a pail to test the float
- Trace the discharge to daylight and away from the house
| Fault | What you notice | Fix |
|---|---|---|
| Float stuck on the liner wall | Pump never starts | Re-seat the pump, clear the pit |
| Burned-out motor | Humming or silence | Pump replacement |
How the job runs, start to finish
- 1
On the phone
Explain what the water is doing and where. We ask the age of the house and which valve or breaker to shut while we drive over.
- 2
Drop cloths down
Floors and cabinets get covered, the water or gas is isolated and the work area is lit.
- 3
Find the failed part
We open the trap, cleanout, access panel or wall where the fault is, and show you what we found.
- 4
Quote, then work
We explain what failed and what the fix costs; no cutting starts until you say yes.
- 5
Cut, fit, seal
Old parts come out, new pipe, valves or fixtures go in, and joints are soldered, pressed, crimped or glued.
- 6
Test and ticket
We run water, pressure-test or fire the heater, check for drips, clean up and leave a written ticket of what was done.