Turn off the water supply
Identify the leak source
Tighten loose showerhead connections
Replace worn showerhead washers or O-rings
Apply plumber’s tape to threaded connections
Replace a damaged shower hose
Reseal cracked caulk around the shower area
Replace damaged grout or sealant
Repair or replace the shower valve cartridge
Replace worn valve stems or seals
Inspect and repair the shower pan or drain
Check for leaks behind the wall
Replace damaged pipes or fittings
Test the shower after each repair
Call a licensed plumber if the leak continues