THE SHORT ANSWER
Look at where the water appears after the handle is normally off: the spout outlet, faucet base or area below the sink. Note whether the outlet drip stops or keeps returning between uses. That record helps support choose the next check. Do not tighten the handle harder or buy a cartridge from the symptom alone.
Before you try anything
Stop normal use if water cannot be controlled, spills beyond the basin, appears in the cabinet or approaches electrical equipment. Keep clear of wet electrical devices and arrange prompt qualified help. Do not force a handle, touch hot water to identify it or reach into a wet cabinet. Renters should report the problem to property maintenance.
Before you begin
For a manually operated bathroom sink faucet that drips after shutoff. Sensor faucets, showers and tub valves have different controls. This is an observation and service-handoff guide, covering no handle removal, aerator removal, supply-valve operation or internal repair.
Use a phone or written note for the drip pattern and an existing receipt or manual for the model. A photo from a dry position is useful. A parts kit or wrench is not needed to identify the visible location.
In a rental, report the problem to your landlord or property manager before making repairs. Building rules and local requirements vary.
Work through the checks
- 01
Identify the visible outlet
Watch from a safe position after ordinary shutoff. A bead falling from the spout is a different observation from water running around its base or appearing below the sink. Report each location separately if more than one is wet.
- 02
Note whether the drip ends
Record when you last used the faucet and whether dripping stops or continues between uses. Kohler distinguishes temporary outlet dripping from a continuous leak in its bathroom-faucet guidance. Its described duration is not a universal pass/fail test for other models.
- 03
Describe the controls without taking them apart
Note one handle or two and whether each reaches its normal Off position. For a two-handle faucet, do not assume the dripping water identifies which internal part needs work. Report unusual resistance or a change after recent service.
- 04
Find the product information
Use paperwork or a safely visible label. Moen emphasizes identifying the faucet before choosing a cartridge, and Kohler says replacement valves vary by model. Send support a photo and the symptom record before ordering.
- 05
Arrange the appropriate next step
Persistent outlet dripping deserves repair advice. EPA includes dripping faucets among household leaks worth fixing. For a contained drip, contact manufacturer support or a plumber; water outside the basin, poor shutoff or a worsening leak needs prompt attention.
What your result means
These observations help choose a next step. They do not confirm a diagnosis.
| What you notice | What it tells you | Next step |
|---|---|---|
| A few outlet drips stop, then do not return between uses | A temporary pattern has been recorded | Compare with the exact product guidance; duration alone does not establish the cause. |
| Outlet dripping continues with the controls off | The faucet may need model-specific valve or cartridge service | Contact support or a plumber; do not select or remove a part from this observation. |
| Water gathers at the base or below the sink | The visible leak is outside the outlet-drip scope | Stop use if it is wetting the cabinet or floor and arrange plumbing help. |
| The handle is stiff, damaged or no longer controls flow | Shutoff is unreliable | Avoid force and repeated trials; arrange prompt qualified help. |
Know what happens next
Check the outcome
After the appropriate repair, observe the outlet after normal shutoff and again between uses. Check for visible water around the fixture and on accessible surfaces without disturbing connections. Record any returning drip; a short dry observation does not prove that an intermittent leak has ended.
When to call a professional
Use manufacturer support or a plumber when the outlet keeps dripping, model identification is uncertain, the problem returns or recent work changed the controls. Seek prompt help for uncontrolled flow, water outside the basin or wet electrical surroundings.
Take useful notes with you
A short record makes it easier to explain the problem to a landlord, technician, or responder. Do not collect notes during an emergency.
Notes stay in this page until you leave or reload. Download a copy to keep them. They are not sent to us.
Common questions
Does dripping always mean a worn washer?
No single part fits every faucet. Kohler discusses a temporary aerator-related pattern and continuous valve trouble; Moen describes cartridge and handle-mechanism causes. Identify the product before a repair choice.
Should I soak the spout in vinegar?
Do not treat that as a universal test. Kohler describes an aerator procedure for its products, but it requires removal and does not establish your model or finish compatibility. Ask support for the exact care instructions.
Can I wait if the drops stay in the sink?
A contained drip still needs attention. Record it and arrange repair advice; escalate promptly if flow grows, shutoff becomes unreliable or water appears outside the basin.
Sources & scope
This is a desk-researched guide, not a hands-on test or an on-site diagnosis. A licensed tradesperson has not independently reviewed this edition. Follow your product’s manual and local requirements.
- Kohler Assist — Leaking from End of Spout: Bathroom Faucets
Read 2026-10-23. Distinguishes temporary outlet dripping and continuous leakage for listed bathroom faucet designs. Its timing, soak recipe and valve replacement are not universal homeowner instructions.
- Moen Solutions — Fixture Leaks from the End of the Spout
Read 2026-10-23. Describes cartridge/seal and handle-mechanism causes; requires model identification for replacement selection. Internal inspection and replacement procedures are not reproduced.
- U.S. EPA WaterSense — Fix a Leak Week
Read 2026-10-23. Supports checking household leaks, distinguishing exterior surface leakage and addressing dripping faucets. No savings estimate, repair cost or universal parts prescription is inferred.
Published 2026-10-27 · Our editorial policy · Report a correction