Installation
A faucet usually keeps dripping because an internal seal, cartridge, washer, valve component, or connection is no longer controlling the water correctly.
The exact cause depends on the faucet design and where the water appears. A drip from the spout points toward the faucet’s internal shutoff components, while moisture around the handle, base, supply lines, or cabinet may involve a different seal or connection.
Start With the Faucet Type
Different Faucet Designs Use Different Parts to Stop the Water
Worn Cartridge
Many single-handle and two-handle faucets use replaceable cartridges. Internal wear, buildup, or damage can prevent the cartridge from sealing completely.
Damaged Washer or Seal
Compression-style faucets and other designs may rely on washers, seals, or O-rings that can harden, flatten, crack, or shift out of position.
Valve-Seat Wear
The surface where the internal component closes may become worn, corroded, or covered with mineral buildup, allowing water to pass.
Loose Internal Component
A retaining nut, handle assembly, stem, cartridge, or another internal part may become loose and keep the faucet from closing correctly.
High Water Pressure
Excessive or unstable water pressure can place added strain on faucet cartridges, seals, supply lines, and other fixture components.
Mineral Buildup or Debris
Scale, sediment, or debris can interfere with sealing surfaces and moving parts, especially in areas with mineral-heavy water.
Watch the Pattern
A Constant Drip and a Drip That Stops Later Can Point Toward Different Conditions
The Faucet Drips Continuously
- Cartridge or valve component may not be sealing
- Washer or O-ring may be worn
- Valve seat may be damaged or corroded
- Debris may be trapped inside the faucet
- Water pressure may be stressing the fixture
The Faucet Drips Briefly After Use
- Water may be draining from the spout or aerator
- A pull-down sprayer hose may be emptying
- Water may remain inside a tall or curved spout
- The aerator may hold a small amount of water
- A slow internal leak may still be developing
Follow the Water
Where the Water Appears Helps Narrow the Failed Part
The cartridge, stem, washer, seal, valve seat, or another internal shutoff component may no longer be sealing completely.
A worn cartridge seal, O-ring, packing nut, stem seal, or loose internal component may be allowing water to escape near the handle.
The base gasket, mounting seal, body connection, pull-out hose, or water traveling from the handle area may be involved.
A supply line, shutoff valve, faucet connection, sprayer hose, drain connection, or faucet body may be leaking beneath the sink.
A connection, hose, faucet body, aerator, or seal may leak only when the fixture is under active flow.
A two-handle faucet may have a failed cartridge, stem, washer, or valve component on the affected side.
What You Can Safely Check Before Scheduling Service
Dry the entire fixture. Wipe the spout, handles, faucet base, countertop, supply lines, and cabinet so new moisture is easier to trace.
Watch the spout after closing the handle. Note whether the dripping continues indefinitely or stops after retained water drains.
Operate hot and cold separately. On a two-handle faucet, this may help identify which side is not sealing.
Look beneath the sink. Use a dry paper towel around the shutoffs, supply lines, hose connections, and faucet mounting area.
Check the aerator. Buildup or debris can affect the stream, although an aerator alone usually does not cause a continuous internal drip.
Note recent changes. Record whether the leak began after plumbing work, a pressure change, a freeze, a repair, or faucet installation.
When to Stop the Water
Use the Fixture Shutoffs When Water Is Escaping Outside the Sink
Shut Off the Faucet’s Water Supply When
- Water is leaking inside the cabinet
- A supply line or shutoff valve is dripping
- Water is spreading across the countertop or floor
- The faucet body or hose is visibly damaged
- The leak becomes heavier when the faucet is used
Schedule Plumbing Service When
- The faucet continues dripping after it is closed
- The handle is difficult to operate
- The correct replacement part is unclear
- The leak returns after a recent repair
- Corrosion or several worn components are visible
Why Diagnosis Matters
The Correct Repair Depends on the Faucet Design and the Leak Location
A faucet can drip from the spout, leak around a handle, release water around the base, or leak beneath the sink. A useful evaluation identifies the faucet type, confirms where the water originates, checks the shutoffs and supply lines, and determines whether the fixture can be repaired dependably.
Internal Valve Components
Cartridges, stems, washers, seals, O-rings, valve seats, and retaining components are checked for wear, damage, buildup, and poor alignment.
Faucet Body and Handles
The body, handle movement, mounting assembly, base seal, and visible joints are reviewed for looseness, corrosion, cracks, or leakage.
Supply Connections
Shutoff valves, supply lines, threaded connections, hoses, and accessible plumbing beneath the sink are checked for moisture and deterioration.
Overall Fixture Condition
Age, repair history, parts availability, finish condition, corrosion, functionality, and expected reliability help determine whether repair or replacement provides better value.
Stop the Drip at Its Source
Find Out Why the Faucet Keeps Leaking
Malek can identify where the water is escaping, inspect the faucet’s internal components and accessible connections, and explain whether a focused repair or faucet replacement makes more sense.
Possible Solutions
The Right Repair Depends on the Failed Part and the Faucet’s Condition
Faucet Repair May Make Sense When
- The cartridge, washer, seal, or O-ring has failed
- A handle or retaining component is loose
- The valve seat can be cleaned or serviced
- The correct replacement part is available
- The faucet otherwise remains in dependable condition
Faucet Replacement May Be Considered When
- The faucet body is cracked or heavily corroded
- Several internal components are worn
- Replacement parts are unavailable or unreliable
- The fixture has required repeated repairs
- Leaks, poor operation, or finish damage remain
What a Professional Evaluates
A Good Evaluation Should Identify the Leak Source Before Recommending Work
The handle design, manufacturer, model, mounting style, and internal valve system help determine the correct repair parts.
The fixture is checked to determine whether water is passing through the spout or escaping around the handles and body.
Internal parts are reviewed for wear, cracks, mineral buildup, damaged seals, poor alignment, and valve-seat deterioration.
The faucet base, gasket, mounting hardware, countertop connection, and pull-out hose components are checked for leakage and movement.
Accessible valves, supply connections, hoses, and fittings are inspected for corrosion, moisture, and dependable operation.
The recommendation should account for the failed component, faucet condition, parts availability, repair history, functionality, and expected reliability.
Frequently Asked Questions
Common Questions About Dripping Faucets
Why does my faucet drip after I turn it off?
A worn cartridge, washer, seal, O-ring, valve seat, or another internal component may be allowing water to pass after the handle is closed. A brief drip may also be retained water draining from the spout.
Can a dripping faucet increase my water bill?
Yes. A faucet that drips continuously uses water throughout the day, even when the fixture is not being used. The total amount depends on the speed and consistency of the drip.
Why does my faucet leak around the handle?
Water around the handle may come from a worn cartridge seal, O-ring, packing component, stem seal, loose retaining nut, or another internal connection.
Why is there water under my sink when the faucet runs?
A supply line, shutoff valve, faucet connection, pull-out hose, sprayer connection, faucet body, or drain component may be leaking beneath the sink.
Can high water pressure make a faucet drip?
High or unstable water pressure can place added stress on cartridges, seals, supply lines, and other fixture components. The failed faucet part should still be identified rather than assuming pressure is the only cause.
Can mineral buildup cause a faucet to leak?
Yes. Mineral deposits and debris can interfere with cartridges, washers, valve seats, seals, and moving parts, preventing the faucet from closing completely.
Should I repair or replace a dripping faucet?
Repair may make sense when the failed component is available and the faucet remains in good condition. Replacement may provide better value when the fixture is corroded, damaged, repeatedly unreliable, difficult to service, or affected by several problems.
When should I call a plumber for a dripping faucet?
Schedule plumbing service when the leak source is unclear, water is escaping beneath the sink or around the base, the shutoffs are unreliable, the correct part is difficult to identify, or the drip returns after repair.
