Direct answer: If a faucet drips for more than a few seconds after you turn it off, the usual cause is wear inside the faucet body, most often a faucet cartridge on a single-handle faucet or a faucet stem washer and seat on a two-handle faucet.
Most likely: Start by telling the difference between a normal leftover drip from the spout and a true shutoff leak. If the drip keeps rebuilding and falling, the water is getting past the internal shutoff parts.
Watch the spout right after shutoff, then again after a minute. A couple of trailing drops is normal on many faucets, especially high-arc and pull-down styles. A steady drip that keeps coming back is not. Reality check: one drip every few seconds can waste a surprising amount of water over time. Common wrong move: cranking the handle tighter usually wears the internal parts faster instead of stopping the leak.
Don’t start with: Do not start by replacing the whole faucet. Most of these are internal sealing problems, and the right repair depends on whether you have a cartridge faucet or a stem-and-washer faucet.
The faucet stops on its own after a short moment and stays dry after that.
Start here: This is usually leftover water draining from the spout or spray head. Wipe it dry and recheck after a minute before taking anything apart.
A new drop keeps forming at the spout tip even after the faucet has been off for a while.
Start here: This points to water getting past the internal shutoff parts. Identify whether the faucet is single-handle or two-handle first.
The faucet can be made to stop, but only with more force than normal.
Start here: That usually means worn sealing parts inside the faucet, not a loose outside piece. Avoid overtightening and plan on an internal repair.
Water shows up around the faucet body, under the sink, or at the supply connections instead of only at the spout.
Start here: That is a different leak path. Check the first wet point and use a base-leak or supply-connection diagnosis instead of a spout-drip repair.
This is the most common cause on single-handle faucets. The internal seals no longer shut water off cleanly, so the spout keeps rebuilding a drip.
Quick check: If the faucet has one main handle and the drip continues well after shutoff, the faucet cartridge is the first suspect.
This is common on older two-handle faucets. The rubber washer hardens or grooves, or the seat it presses against gets rough.
Quick check: If each side has its own handle and the drip changes when you close one side harder, suspect the hot or cold faucet stem assembly.
After shutoff, grit or scale can keep the cartridge or washer from sealing fully, especially if the drip started suddenly after plumbing work or a shutoff.
Quick check: If the faucet was fine before a water interruption and now drips, debris inside the faucet is more likely than a sudden major part failure.
If the drip started after freezing weather or the faucet body was exposed to cold, internal damage can keep it from sealing even with new handles or normal shutoff.
Quick check: If the problem began right after a freeze, do not assume it is just a worn cartridge. Look for other signs of cracking or use a freeze-specific diagnosis.
A lot of faucets release a few trailing drops from the spout or pull-down head after use. That is different from water leaking past the shutoff parts.
Next move: If the dripping stops quickly and stays stopped, you likely do not have a repair problem at the shutoff parts. If the drip keeps rebuilding, move on and identify the faucet style before buying anything.
What to conclude: A short tail-off drip is normal on many faucets. A repeating drip means water is passing an internal seal.
The most likely failed part depends on how the faucet shuts off. Single-handle faucets usually use a cartridge. Two-handle faucets often use separate stem-and-washer assemblies.
Next move: Once you know the faucet style, the likely repair path gets much narrower. If the faucet design is unusual or heavily corroded and you cannot tell how it comes apart, stop before forcing trim pieces or handles.
What to conclude: Single-handle drip problems usually point to a faucet cartridge. Two-handle drip problems usually point to a faucet stem washer, seat, or faucet stem assembly on the leaking side.
A faucet can start dripping after a shutoff, plumbing repair, or sediment event because grit gets caught on the sealing surfaces. That is worth checking before you order parts.
Next move: If the drip stops or improves a lot after flushing and cleaning, debris was likely keeping the faucet from sealing cleanly. If the drip pattern does not change, worn internal parts are more likely than a simple debris issue.
This is the point where the visible clues line up with the actual repair. You are checking the part that seals water inside the faucet, not guessing from the outside.
Next move: If you find a worn cartridge or a damaged washer and seat area, you now have a supported repair path instead of a guess. If the internal parts look damaged in a way you cannot identify, or the faucet body itself looks cracked, stop and reassess before ordering random parts.
Once the failed part is identified, the fix is usually straightforward. The goal is a clean shutoff without overtightening and without creating a new leak at the handle or base.
A good result: A clean shutoff with no rebuilding drip confirms the internal sealing problem is fixed.
If not: If the faucet still leaks from the spout after the correct part replacement, the mating seat surface or faucet body may be damaged enough that a pro or full faucet replacement makes more sense.
What to conclude: A successful repair restores normal shutoff without extra force. If the leak remains, the problem is deeper than the first wear part alone.
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Yes. Many faucets, especially taller spouts and pull-down styles, will release a few leftover drops after shutoff. If the dripping stops quickly and stays stopped, that is usually normal. If a fresh drop keeps forming after a minute or more, that is a true leak.
That usually means the internal sealing parts are worn. On a single-handle faucet, the faucet cartridge is the usual culprit. On a two-handle faucet, the faucet stem washer or faucet stem assembly is more likely. Overtightening may stop it briefly, but it tends to wear the parts faster.
Not first. A spout drip after shutoff is usually an internal repair, not a whole-faucet problem. Start by identifying whether the faucet uses a cartridge or a stem-and-washer setup. Replace the whole faucet only if the body is cracked, the seat area is badly damaged, or parts are no longer available.
Not usually by itself, but debris in the faucet after plumbing work can keep the shutoff parts from sealing fully. Cleaning the aerator is a simple check, especially if the drip started suddenly, but a steady ongoing drip usually comes back to the cartridge or stem parts.
Treat that more cautiously. Freeze damage can crack internal parts or the faucet body, and the leak may not be limited to a simple worn seal. If the drip began right after freezing weather, inspect carefully for cracks and use a freeze-specific diagnosis if anything looks damaged.