Why won’t my toilet stop running?
A toilet that runs nonstop is almost always one of two parts: a flapper that no longer seals, or a fill valve that won’t shut off. Either one can quietly waste a lot of water and show up on your bill. The good news is both are common, fixable parts.
Find which part is failing
- The flapper isn’t sealing. That’s the rubber flap at the bottom of the tank. When it wears or warps, water seeps from the tank into the bowl, so the tank keeps refilling. The most common cause.
- The fill valve won’t shut off. This is the part that refills the tank after a flush. When it doesn’t fully close, water runs continuously into the overflow tube. A fill valve stuck open can waste as much water as a bad flapper, sometimes more, and it’s a top reason for a surprise high bill. Worth checking closely.
- The float is set too high. If the float sits too high, water rises above the overflow tube and runs down it nonstop. Lowering the float often fixes it.
- A chain problem. Too short and it holds the flapper open; too long and it gets pinched underneath so the flapper can’t seal.
- A damaged flush-valve seat. If the seat the flapper rests on is pitted or crusted with minerals, even a brand-new flapper won’t seal against it.
The two-minute checks
Put a few drops of food coloring in the tank, don’t flush, and wait ten minutes. Color in the bowl means the flapper is leaking. To check the fill valve, look and listen for water trickling into the overflow tube (the open vertical pipe in the middle) after the tank is full. While you’re in there, check the chain and the float.
When to call
If it keeps running after the easy checks, or you can’t tell which part is at fault, we’ll sort it out and replace what’s worn. And if your water bill jumped, a running toilet is the number one reason. Same-day service across the Midlands during business hours.
Quick answers
Toilet still running? We’ll find the part that’s wasting water and replace it.