A leaking pipe in your London Ontario home or business can cause water damage, mould, and higher bills if left unchecked. Leaks can happen at joints, at fixtures, or along aging or frozen pipes. Our 24/7 emergency plumbing dispatch connects you with plumbers who repair leaking pipes across London, St Thomas, Strathroy, Woodstock, Ingersoll, and Dorchester—whether the leak is under a sink, behind a wall, or in the basement.
Signs You Have a Leaking Pipe
- Unexplained increase in water bills – A steady leak can waste a lot of water over a month.
- Water stains on ceilings, walls, or cabinets – Brown or yellow patches often indicate a pipe leaking above or inside the wall.
- Damp or soft drywall – Soft spots, bubbling paint, or musty odours suggest an active leak.
- Sound of running water when no taps are on – You may hear dripping or running inside walls or under floors.
- Puddles under sinks, around the water heater, or in the basement – Visible water or moisture near pipes is a clear sign.
A small leak can become a burst pipe if pressure or freezing worsens. For a full burst or flooding, see our burst pipe repair London page. For water from a failed water heater or sewer backup, our plumbers handle those emergencies too.
What To Do When You Find a Leak
- Shut off the water – Turn off the valve for the affected fixture (under the sink or at the toilet). If the leak is severe or you can't find the valve, shut off the main water supply.
- Contain the water – Use towels or a bucket to limit damage; move items away from the leak.
- Turn off electricity if needed – If water is near outlets or the electrical panel, turn off power to that area.
- Call for leaking pipe repair – Our dispatch can connect you with a plumber who will locate the leak, repair or replace the pipe, and check for related damage.
Why Pipes Leak in London Ontario
Older homes in London and nearby towns often have galvanized steel or copper pipes that corrode or develop pinhole leaks over time. Freezing and thawing in winter can crack pipes or weaken joints. High water pressure can stress fittings and cause leaks. Poor installation or shifting foundations can loosen connections. Hard water can accelerate corrosion. A plumber can identify the cause and recommend repair or repiping. For emergencies like a burst pipe, our emergency plumber London network is available 24/7.
If you're also dealing with a clogged drain, toilet overflow, or sump pump issue, mention it when you call—many of our plumbers handle multiple types of plumbing work.
Leaking Pipe Repair Options
Depending on the location and severity, a plumber may tighten a fitting, replace a section of pipe, or repipe an area. For leaks behind walls, they may need to access the pipe and repair or replace it. Quick fixes like pipe tape or clamps can be temporary; a proper repair ensures the leak won't return. For drain cleaning or other non-leak issues, we have dedicated service pages.
For leaking pipe repair in London Ontario, call our 24/7 emergency dispatch or request help online. We connect you with licensed plumbers serving London, St Thomas, Strathroy, Woodstock, Ingersoll, and Dorchester.
Get Help Now
Don't let a small leak become a big problem. For leaking pipe repair in London Ontario, call our 24/7 dispatch or request help online. We serve London and nearby communities around the clock.