Homeowner guideTroubleshooting
Why Is My Water Pressure Low?
A feeble stream might be one gunked-up aerator, or it might be trouble on the main supply. A few checks narrow down the cause.
Sink with tap placed at wall with mirror in light spacious bathroom with toilet and glass shower cabin.
- Short steps a homeowner can follow safely
- What to check before you pick up the phone
- Clear signs it is time to call a plumber
- Markham and York Region notes where they matter
- Licensing details confirmed when you call
- Residential
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- Markham & York Region
The short version
- Clean the aerator: unscrew it, rinse out debris, soak in vinegar.
- Check shut-off valves under the sink; make sure they are fully open.
- Clean or replace the showerhead.
- Check the faucet cartridge for debris or scale.
One fixture or the whole house?
Try three or four taps around the house. A single weak tap points to that fixture. Weak flow everywhere points to the main line, the meter area or a valve.
Hot water only
Weak hot water with normal cold flow usually traces to sediment in the water heater, a partly closed valve on the heater, or a failing dip tube.
Whole house
- Confirm the main valve is turned all the way open.
- Look at the PRV near the meter, where one is fitted.
- Look for leaks: check the water meter with all taps off.
- Consider old galvanized pipes that may be clogged inside.
- Ask neighbours. If they have low pressure too, it may be city work or a main issue.
From the van: A pressure gauge on a hose bib gives a quick reading. Most homes do well between 50 and 70 psi.
Sudden drops
A sudden drop in pressure can mean a leak, a broken pipe or city water main work. Check for water on floors, listen for running water, and check the City of Markham for service notices.
When to call
If simple fixes do not help, or you suspect a leak or a failing PRV, call us. We can test pressure, inspect valves and pipes, and find the cause.