Residential · Pipes, leaks & valves
Low Water Pressure Repair in Markham
Weak flow is a restriction somewhere between the street and the tap: a half-closed main, a failing pressure regulator, scaled galvanized pipe or a clogged cartridge. We test pressure at a hose bib and work inward.
- Static and flow pressure read at a hose bib
- Leaks traced with meters and thermal camera
- Copper, PEX and poly-b repairs and replacement
- Main shut-off exercised and labelled
- Licensed plumbers (details on request)
- Price agreed before work
- Call-only, no forms
- Tested before we leave
Signs you need low water pressure repair
The first clue is where the problem shows up. One fixture with weak flow usually points to something local, like a clogged aerator or cartridge. Every tap in the house losing pressure points further upstream. Here is what people describe most:
- A shower that trickles while the kitchen tap is fine.
- All fixtures weaker than they used to be, getting slowly worse.
- Pressure that falls off hard once a second fixture opens.
- Hot water flow much weaker than cold.
Our routine on the day
We start with a pressure gauge on an outside tap or laundry box to measure what is actually coming into the house. Then we work along the system. Aerators and shower heads are cleaned or replaced. Faucet cartridges are checked for mineral buildup. If only hot water is weak, the water heater's inlet and outlet fittings or a sediment-filled tank are the likely suspects.
When the whole house is affected, we look at the main shut-off to see if it is partly closed or failing, check any pressure-reducing valve for a worn diaphragm, and inspect the supply pipes. Galvanized steel narrows from the inside as it corrodes, and that can choke flow to a fraction of what it was. A hidden leak also lowers pressure, so we watch the meter with all taps closed.
Markham houses and what shapes this job
Homes on higher ground, such as parts of Angus Glen and the northern edges of Markham, can have slightly lower street pressure. Older houses in Markham Village with galvanized lines often lose pressure gradually over years. Newer subdivisions sometimes rely on a pressure-reducing valve by the main, and those wear out after fifteen or twenty years. Each points to a different fix, from a new valve to repiping.
Quick checks you can do
Unscrew the aerator on a slow tap and look for grit or scale; soaking it in vinegar overnight often restores flow. Check that the main shut-off is completely open, since a valve left half-closed after a past repair is surprisingly common. Read the water meter at bedtime, then again at breakfast with nothing running. If the numbers changed, there is a leak somewhere worth tracking down.
Ring us without delay if
A sudden pressure drop across the whole house, especially with a hissing sound or a damp spot somewhere, may mean a leak. Shut the main and call. For a deeper look at causes, see the low water pressure causes brief, and if the service line itself is suspect, water line replacement.
Newer subdivisions sometimes rely on a pressure-reducing valve by the main, and those wear out after fifteen or twenty years.
From the job notes of Plumbers in Markham
Job card · Pipes, leaks & valves
On the van for this job
- Pipe cutters, propane torch and press tools for copper
- Gauges for static and flow pressure tests
Signs you need this
- The meter dial turns with every tap off
- Flow that falls off when a second tap opens
What we check before we pack up
- Read static pressure at a hose bib
- Pressure-test new pipe before closing walls
| Pipe | Era | Watch for |
|---|---|---|
| Galvanized steel | Pre-1960s | Rust narrows the bore |
| Poly-b (grey) | About 1978 to 1995 | Fitting failures, brittle pipe |
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.