DIY: Stop a Running Toilet (Quiet Fix in Minutes)

## Diagnose First
- Remove the tank lid and listen: is water trickling into the bowl or tank?

## Common Fixes
1. Check the flapper: if it’s warped or gritty, clean it and adjust the seat; replace if needed.
2. Adjust the chain: leave about 1/4" slack so the flapper seals fully.
3. Set the water level: adjust the float so the water line sits below the overflow tube.
4. Inspect the fill valve: flush debris by lifting the float and letting water run with the cap off (follow valve instructions).

## When to Call a Pro
- Cracked tank or bowl
- Persistent leaking after parts are replaced