A showerhead can release trapped water briefly after the valve closes. A drip that continues long after use can mean water is still passing through the control valve. The timing can help a plumber tell the two situations apart.
Note where the water appears
Check whether water comes from the showerhead, the tub spout, or around the handle. For a tub and shower combination, report whether it happens after either outlet was used. Water behind the trim or on a nearby wall deserves prompt attention.
Match replacement parts to the valve
A worn shower cartridge or seal can allow water to pass. Photograph the trim and share the model if you know it. The visible handle can help identify the valve, but the technician may need to check the installed part before ordering a replacement.
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