A faucet leaks because one or more internal components have worn out or failed, preventing a watertight seal when the handle is in the closed position. The most common internal failures involve the cartridge, washer, O-ring, or valve seat inside the faucet body. Each component creates a seal under water pressure, and once it degrades, water finds a path out even when the tap is fully closed.
In the GTA, hard water accelerates internal wear. Municipal water in Mississauga and surrounding areas carries dissolved calcium and magnesium, which deposit as scale on internal surfaces and degrade rubber seals faster than in softer-water regions. A faucet that drips once every second can waste more than 30 litres of water per day, a figure consistent with faucet water use data published by Natural Resources Canada, adding measurably to your water bill over a season.
Identifying the source of the leak, whether from the spout, the handle base, the supply connection, or the body itself, determines which component needs repair or replacement.
Not all faucet leaks look the same, and the location of the drip identifies which component is failing. Spout dripping when the handle is off typically points to a worn cartridge, a faulty washer, or a corroded valve seat. Handle base leaking usually means the O-ring or packing nut has deteriorated. Supply line dripping at the sink connection is a fitting or compression problem, not a faucet component issue.
Intermittent spraying from the spout often signals a cracked aerator or a partially blocked cartridge. A faucet that feels stiff before it drips has likely accumulated mineral scale on the stem. Understanding the leak type helps a licensed plumber handling faucet repairs bring the correct replacement parts on the first visit.
Faucet design determines where a fixture is most likely to fail. Cartridge faucets are the most common type in GTA homes and condos. They use a plastic or brass cartridge that slides up and down to control water flow. When the cartridge wears out, spout dripping is the first sign. A licensed plumber completes a cartridge replacement by removing the handle, extracting the worn cartridge, and fitting an exact-match replacement.
Ball faucets use a single handle that rotates over a rounded cap and contain O-rings, seats, and springs that all wear independently. A ball faucet leak often requires a full repair kit because multiple components fail at once. Compression faucets are the oldest design and require turning each handle fully to stop flow. They use a rubber washer pressed against a seat, and washer replacement resolves most drips. Ceramic disc faucets, found in higher-end fixtures, use two polished ceramic discs. They are durable under normal conditions but can be affected by mineral scale from GTA hard water.
A faucet leak is sometimes a symptom of a larger supply system issue. High water pressure accelerates cartridge and washer wear: when pressure runs above the residential maximum set by the Ontario Building Code, internal faucet components fail years ahead of their normal lifespan.
Corrosion inside supply lines also causes leaks at the faucet connection rather than inside the faucet body. Homes with galvanized supply lines, common in GTA properties built before the 1980s, develop corrosion at the risers and shutoff valves. When a faucet leak appears alongside reduced water pressure or rust-coloured water, the issue often sits in the supply system rather than the fixture itself.
Multiple faucets dripping simultaneously in different rooms is a signal to inspect the main shutoff valve and the pressure reducer, not just individual fixtures. A licensed plumber can pressure-test the system to confirm whether the faucets or the supply lines are the root cause.
An unrepaired faucet leak creates two ongoing problems: water waste and structural damage. A single dripping faucet wastes between 10,000 and 30,000 litres per year depending on flow rate, adding to every quarterly water bill in Mississauga where the City bills on a tiered volumetric rate.
On the structural side, a leak at the faucet body or supply connection can drip inside the vanity cabinet or under the kitchen sink for months before visible damage appears. Sustained moisture causes cabinet deterioration, subfloor swelling, and mold growth in enclosed spaces. When supply connection leaks go undetected, they can escalate into a larger pipe failure requiring urgent plumbing repairs and water damage remediation.
Addressing a faucet leak at the first drip is always less expensive than addressing it after secondary damage has developed inside cabinetry or walls.
Some faucet repairs are within reach for a careful homeowner. Replacing a worn aerator, tightening a packing nut, or swapping an O-ring on a compression faucet requires basic tools and a matching replacement part. These repairs carry low risk when the supply valves under the sink shut off fully and the homeowner can identify the correct part by make and model.
Licensed plumber intervention is required when the faucet is not standard, when the cartridge is seized by mineral deposits, when supply valves do not shut off fully, or when the leak appears inside the wall or cabinet. Ontario plumbing work that involves supply lines or shutoff valve replacement requires a licensed professional under the provincial plumbing code. Galaxy Plumbing Inc. carries replacement cartridges, O-rings, and washers for the most common residential faucet brands used in GTA homes, enabling same-visit completion on most standard repairs.
Faucet leak repair costs in the GTA vary by faucet type, the specific component that has failed, whether replacement parts need to be sourced, and the accessibility of the fixture. Standard cartridge replacements and washer swaps are completed quickly because the components are inexpensive and labour time is short.
Costs increase when the repair requires shutoff valve replacement, supply line work, or when the faucet body is damaged and full replacement is needed. On older fixtures where replacement cartridges are no longer in production, replacing the entire faucet body is more practical than sourcing a compatible part. Galaxy Plumbing Inc. serves all GTA municipalities with no additional travel surcharge, and provides upfront pricing before any work begins so homeowners can make an informed decision.
Repair is the right choice when the faucet body is intact, the make and model are still in production, and the failing component is a standard wear item like a cartridge, O-ring, or washer. Replacement becomes practical when the faucet body is cracked or corroded, when the fixture is over 15 to 20 years old, when replacement parts are no longer available, or when the homeowner is upgrading the fixture as part of a renovation.
A faucet repaired multiple times in a short span that continues leaking at different points indicates broad degradation of the body and stem. In these cases, full fixture replacement is a more cost-effective long-term choice. The Canadian Water and Wastewater Association notes that older fixtures without low-flow aerators use significantly more water per minute than modern WaterSense-rated models, making replacement a meaningful efficiency upgrade alongside the repair decision.
A leaking faucet starts as an inconvenience but becomes a source of measurable water waste and potential structural damage when left unaddressed. Most kitchen and bathroom faucet leaks in GTA homes trace back to worn cartridges, degraded O-rings, or corroded valve seats, all of which are resolved in a single licensed plumber visit when caught early.
Galaxy Plumbing Inc. has been serving Mississauga and GTA homeowners with licensed plumbing repairs for over two decades. The team diagnoses faucet leaks by type and component, provides transparent pricing before any work begins, and carries the most common replacement parts on the service vehicle to complete most repairs the same day.
A faucet drips when turned off because an internal component is no longer creating a watertight seal under pressure. The most common causes are a worn cartridge, a cracked O-ring, a deteriorated rubber washer, or a corroded valve seat. In GTA homes, hard water mineral deposits accelerate this wear. The team at faucet repairs diagnoses and resolves the exact failed component in a single service visit.
A faucet leak is serious when flow is increasing, when water appears under the sink or on the floor, or when multiple fixtures drip simultaneously. These patterns suggest the issue extends into the supply line or shutoff valve rather than the faucet body alone. Professional water leak detection confirms whether the leak is isolated to the fixture or part of a broader supply issue.
A dripping faucet increases your water bill by wasting a continuous volume of water. A faucet dripping once per second wastes approximately 30 litres per day and over 10,000 litres per year. In Mississauga and across the GTA, water is billed on a volumetric rate, so waste adds directly to every quarterly charge. Homeowners across Mississauga can schedule same-day faucet repair to stop the waste immediately.
Minor faucet repairs like aerator replacement or O-ring swapping do not require a licensed plumber. However, any work involving supply shutoff valves, supply line replacement, or connections into the wall requires a licensed professional under the Ontario plumbing code. Galaxy Plumbing Inc. is fully licensed and serves the GTA. The team also handles toilet repairs and other fixture work in the same visit when multiple issues are present.
Most residential faucet repairs are completed within one to two hours. Standard cartridge replacements, washer swaps, and O-ring repairs are fast because the parts are small and accessible. The timeline extends when shutoff valves are seized or when a sourced cartridge is needed. Contact Galaxy Plumbing to confirm same-day availability for faucet leak repair across Mississauga and the GTA.
Do not let a dripping faucet run up your water bill or damage the cabinet beneath your sink. Galaxy Plumbing Inc. provides same-day faucet repair across Mississauga, Toronto, Scarborough, Etobicoke, and Oakville with upfront pricing and no hidden fees. Contact us to schedule a licensed plumber visit and get the leak resolved at the source.
