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Water Main Leak Repair in Waterloo

A water main leak wastes water every minute and can undermine your property. We locate the leak in your Waterloo water line and repair or replace it.

Plumber repairing a water leak in a Waterloo home

A Water Main Leak Costs You Around the Clock

The water main is the line that brings fresh water from the street into your Waterloo home, and when it leaks it does so 24 hours a day, often underground where you cannot see it. The water shows up as a soaring bill, a soft soggy patch in the yard, dropping pressure at the taps, or the faint sound of running water with everything shut off. Flowline Plumbers locates the break in your main line and repairs or replaces it, so you stop paying for water you never use.

Main water line and tank plumbing

Signs of a Water Main Leak

  • A water bill that jumped with no change in your usage
  • A wet, sunken, or unusually green patch in the yard
  • Low or dropping water pressure throughout the house
  • The sound of running water when no fixture is on
  • Air or sputtering when you turn on a tap
Copper and PEX water line installation

How We Locate and Repair Your Main Line

Finding a buried leak is the hard part, and guessing means digging up your whole yard. We use line locating to pinpoint the break first, then choose the least disruptive repair, whether that is a targeted excavation or a trenchless replacement of the line. You get a clear scope and a firm price before any digging starts.

Who Pays: You or the City of Waterloo

The line from the street into your home is generally the homeowner's responsibility, while the City typically handles its side. We help you understand where the leak sits and what falls to you before any work begins, so there are no surprises.

Why Waterloo Homeowners Trust Flowline With Main Line Leaks

  • Accurate underground leak locating before we dig
  • Repair and full line replacement options
  • Licensed plumbers on every job
  • Clear scope and firm pricing up front
  • 50+ five-star Google reviews in Waterloo, plus 500+ Google reviews across Flowline
Basement main line and sump area

Licensed

On every job

Flat-rate

Upfront quote

Same-day water main leak in Waterloo

Call Now: 226-242-9145
Flowline Plumbers Waterloo

Serving All of Waterloo

We cover neighbourhoods across Waterloo. If your home is in the city, we can reach you, often the same day you call.

Waterloo office180 Northfield Dr W 1st Floor, Unit 4, Waterloo, ON N2L 0C7
Uptown WaterlooBeechwoodLakeshoreEastbridgeColumbia ForestLexington

Water Main Leak Waterloo: Common Questions

How serious is a water main leak?
Serious. It wastes water continuously, can erode soil around your foundation, and only gets more expensive the longer it runs.
Will you have to dig up my whole yard?
Not if we can avoid it. We locate the exact break first and use trenchless methods where the line allows, to keep digging to a minimum.
Am I responsible for the leak, or the City?
Usually the homeowner owns the line from the property side into the house. We will show you where the leak is and explain what is yours to fix.

Recent five-star Google reviews

Live feedback from homeowners across our Ontario listings.

4.9 · 500+ Google Reviews
★★★★★

Our toilet kept clogging even though we were careful with it. Flowline Plumbers Kitchener came out and checked it properly instead of just doing a quick fix. The plumber cleared the blockage, tested the flush several times, and explained what may have been causing the repeat i…

Aarav Cajla

Kitchener · 4 weeks ago

★★★★★

Flowline Plumbers Guelph replaced a leaking faucet in our powder room. The plumber installed the new faucet and checked the drain. He tested everything and cleaned up. The sink works perfectly. Great plumber Guelph bathroom plumbing service.

Mayank Singal

Guelph · 4 weeks ago

★★★★★

Our shower valve was hard to turn and leaked from behind the handle. Flowline Plumbers Cambridge replaced the cartridge and adjusted the fixture. The plumber tested the shower and made sure it shut off completely. The handle feels smooth now and the leak is gone. It made the s…

Harmanjeet Singh Badesha

Cambridge · a month ago

★★★★★

Fantastic service from start to finish. Everybody was polite, respectful of our home, and fixed our backed-up sink in no time. Thank you for the great work!"

Donovan Allen

Waterloo · 2 months ago

★★★★★

Our toilet kept running and refilling randomly throughout the day. Flowline Plumbers Kitchener replaced the tank parts and adjusted the water level. The plumber tested it several times to make sure it was working properly. The bathroom is quiet now and the toilet no longer was…

Sukhpreet Kaur

Kitchener · 4 weeks ago

★★★★★

Flowline Plumbers Waterloo helped us with a leaking bathroom sink drain. The plumber replaced the drain assembly, sealed it properly, and tested the sink for several minutes. He checked inside the vanity carefully before leaving. No more dripping has appeared. It was a simple…

Jas Soora

Waterloo · 3 weeks ago

Stop paying for a leaking main. Call Flowline Plumbers in Waterloo at 226-242-9145.

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