If your last water bill came in higher than usual and you can’t quite explain why, don’t overlook the obvious suspect sitting right at your kitchen or bathroom sink. A faucet that drips just once per second can waste far more water than most homeowners realize — and in a city like Toronto, where water and wastewater rates have been steadily climbing, that “minor” drip adds up fast.
Here’s what’s actually happening inside a leaking faucet, how much it’s likely costing you, and how to know whether a quick repair will fix it or it’s time to replace the fixture entirely.
How Much Water Does a Dripping Faucet Actually Waste?
It’s easy to dismiss a drip as harmless. It isn’t.
- 1 drip per second ≈ over 11,000 litres of wasted water per year
- 1 drip every 2 seconds ≈ still thousands of litres annually
- A steady trickle (rather than a drip) can waste tens of thousands of litres per year — comparable to dozens of extra showers or loads of laundry
Multiply that by Toronto’s combined water and wastewater rate, and a single neglected faucet can quietly add a meaningful amount to your bill every single billing cycle — for a repair that often costs less than one month of the wasted water itself.
Why Toronto Homeowners Should Pay Extra Attention
Toronto bills water and wastewater together, and rates have risen in recent years as the city invests in aging infrastructure. That means the cost of waste is higher today than it was even a few years ago — a leak that seemed trivial in the past has a bigger impact on your bill now.
Older homes across the city — particularly those with original fixtures from the 1970s–1990s — are also more likely to have worn washers, O-rings, or valve seats that were never replaced, which is one of the most common causes of a persistent drip.
Common Causes of a Leaking Faucet
Worn washer or O-ring In compression faucets (the classic two-handle style with separate hot and cold), the rubber washer that seals the valve wears down with use and eventually lets water seep through even when fully closed.
Corroded valve seat Mineral buildup or corrosion at the valve seat — where the faucet stem meets the base — creates a rough surface that prevents a clean seal, leading to persistent dripping around the spout.
Worn-out cartridge Modern single-handle faucets typically use a cartridge instead of a washer. Over time, the cartridge can wear out or get fouled with sediment, causing drips or inconsistent water flow.
Loose parts Normal use can gradually loosen internal parts like the adjusting ring or packing nut, which is often an easy, inexpensive fix.
High water pressure If your home’s water pressure runs unusually high, it puts extra strain on every fixture in the house, including faucets — often showing up first as a drip that keeps coming back no matter how many times it’s repaired.
Repair or Replace? How to Decide
Not every leaky faucet needs to be replaced. Here’s a general framework:
Repair usually makes sense when:
- The faucet is less than 10–15 years old
- The leak is isolated to a washer, O-ring, or cartridge
- The rest of the fixture — handle, spout, finish — is in good condition
- It’s a single, identifiable leak point
A straightforward faucet repair is typically one of the more affordable service calls a plumber makes, and it often pays for itself within a few billing cycles just from the water saved.
Replacement usually makes more sense when:
- The faucet is old enough that replacement parts are hard to find
- You’ve already repaired it more than once for the same issue
- There’s visible corrosion, pitting, or mineral buildup throughout the fixture
- The finish is worn, chipped, or no longer matches your other fixtures
- Water pressure or flow feels weak or inconsistent even after a repair
If a faucet has needed the same repair two or three times, that’s usually a sign the fixture itself has reached the end of its useful life, and continuing to repair it is only delaying an inevitable replacement — while your water bill keeps absorbing the cost in the meantime.
What a Faucet Replacement Involves
A typical faucet replacement includes removing the old fixture, inspecting the supply lines and shut-off valves underneath (which are also common sources of hidden leaks in older homes), and installing the new faucet with fresh connections. If the shut-off valves themselves are outdated or seized — common in homes with original 1970s–1990s plumbing — replacing those at the same time prevents a second service call down the road.
How to Check for a Leak You Might Be Missing
Some leaks aren’t obvious. A few ways to check:
- Dry test: Wipe the faucet and surrounding area completely dry, then check back in 15–20 minutes for any new moisture.
- Sound test: Turn off everything else in the house and listen closely near the faucet — a faint hiss or drip is often audible even when it’s not visibly dripping.
- Water meter test: Make sure no water is being used anywhere in the house, note your water meter reading, wait 1–2 hours without using any water, then check the meter again. Any movement indicates a leak somewhere in the system — not necessarily the faucet, but worth investigating.
Final Thoughts
A dripping faucet is one of the easiest plumbing problems to ignore — and one of the most consistently expensive to leave unaddressed. Between rising water rates and the sheer volume of water a “small” drip wastes over a full year, a repair that costs relatively little upfront is almost always cheaper than the water you’re losing every month it goes unfixed. If you’ve noticed a drip, a change in water pressure, or a bill that doesn’t quite add up, it’s worth having a plumber take a look before it costs you more than it needs to.
Frequently Asked Questions
Can a leaky faucet really affect my water bill that much?
Yes. A faucet dripping once per second can waste over 11,000 litres a year. Combined with Toronto’s water and wastewater rates, that adds up to a meaningful, recurring cost on every bill until it’s fixed.
Is it cheaper to repair or replace a leaking faucet?
For a newer faucet with an isolated issue (like a worn washer or cartridge), repair is almost always cheaper. For an older fixture that’s been repaired multiple times or shows corrosion, replacement is usually the better long-term value.
How do I know if the leak is coming from the faucet or somewhere else, like a pipe?
A water meter test (checking the meter with all fixtures off) can confirm whether there’s a leak somewhere in the system. If the faucet itself isn’t visibly dripping but you still see meter movement, it’s worth having a plumber check for a hidden leak elsewhere.
Can I fix a dripping faucet myself?
Some repairs, like replacing a washer or O-ring, are within reach for a confident DIYer with the right parts. However, if you’re not sure of the faucet type or the issue keeps coming back, a plumber can diagnose it correctly the first time and avoid repeated water waste in the meantime.
Noticed a drip that won’t quit — or a water bill that doesn’t add up? Contact Mister Plumber for fast, affordable faucet repair and replacement anywhere in Toronto and the GTA.
