Turn off the water supply to the toilet
Flush the toilet to empty the tank and bowl
Check the water supply line for loose connections or damage
Tighten the supply line fittings
Inspect the fill valve for leaks
Replace the fill valve if damaged
Check the flapper for wear or improper sealing
Replace the flapper if needed
Inspect the flush valve seal for cracks or deterioration
Replace the flush valve seal if needed
Check the tank bolts and washers for leaks
Tighten or replace the tank bolts and washers
Inspect the wax ring at the base of the toilet
Replace the wax ring if water leaks from the base
Remove and reset the toilet if the wax ring is damaged
Check the tank-to-bowl gasket for leaks
Replace the tank-to-bowl gasket if needed
Inspect the overflow tube for cracks
Replace the tank if the overflow tube is damaged
Reconnect the water supply and turn it back on
Test the toilet for leaks
Dry the area and recheck after several flushes