Quick Answer:
A small drip from the tub faucet right after you turn the water back on is often normal while pressure and trapped air settle. If the drip stops within a few minutes, it usually isn’t urgent. If it continues, worsens, or becomes a steady stream, follow the checks below.
Why This Happens
- Pressure changes and trapped air: When water is shut off and then restored, pressure can fluctuate and air pockets can force water out slowly until pressure stabilizes.
- Valve or cartridge seating: The internal cartridge, seat, or washer may not reseat perfectly after pressure changes, allowing a small seepage.
- Loose spout or fittings: A spout connection that is slightly loose or worn can drip under transient pressure.
- Mineral buildup: Deposits can prevent parts from sealing tightly, which shows up as a slow drip after water is turned back on.
- For more detail on patterns and timing, see this related guide on faucet leaking after turning the water back on.
Step-by-Step What to Do
1. Wait and observe
- After restoring water, wait 3–10 minutes to see if the drip stops as pressure and air pockets settle.
- Note whether the drip slows, stops, or becomes continuous during that time.
2. Ensure the handle is fully off
- Check that the handle is completely in the off position—single-lever faucets can be left slightly open by accident.
- For two-handle faucets, confirm both hot and cold are fully closed.
3. Inspect the spout connection
- Look under the spout and around the escutcheon for signs of water at the connection point.
- If you see a wet line at the spout base, the spout O-ring or threaded connection may need seating or replacement.
4. Consider cartridge seepage
- If the drip appears to come from the valve rather than the spout, the cartridge or valve seat may be letting water seep through even with the handle off.
- Turn off the local shutoff valves or the house supply before removing the cartridge. If you aren’t comfortable, call a plumber.
- If you must shut the main before working, review basic steps on what to do immediately after you shut off the water to your house to avoid surprises.
5. Test again and monitor
- After any small adjustment (tightening a handle, reseating a spout), restore pressure and watch for recurrence.
- Keep an eye for changes: a steady small drip over days can indicate a worn part; a sudden stream requires immediate action.
What Not to Do
- Do not overtighten fittings — this can strip threads or break parts and make leaks worse.
- Do not ignore a steady stream — a continuous flow can cause water damage and needs prompt attention.
- Do not assume it will stop on its own if it worsens — worsening leaks often mean a failed valve, cartridge, or seal that should be repaired or replaced.
When to Call a Professional
- The drip becomes a steady stream or you see water running into walls or below the tub.
- You can’t isolate the leak or the internal parts appear corroded or damaged.
- Turning parts or removing the cartridge is beyond your comfort level — a plumber can avoid accidental damage.
- Repeated leaks after repairs suggest a larger valve or supply problem that needs professional diagnosis.
Safety Notes
- Always shut off water to the fixture or the house before disassembling valves or cartridges.
- Use towels or a bucket to catch water when you test or remove parts to avoid slipping and water damage.
- Avoid electrical contact with leaking water. If water is near outlets or light fixtures, cut power to the area before working.
Common Homeowner Questions
- Why does the drip stop after a few minutes? — Pressure and trapped air usually settle, allowing seals to seat and dripping to stop.
- Can I fix a dripping cartridge myself? — If you are handy and the water is off, cartridge replacement is common; stop and call a plumber if you’re unsure.
- Is a small drip something to worry about? — Small short-lived drips aren’t urgent, but a persistent drip or steady stream should be repaired promptly to prevent damage.