Why does my toilet keep running?

Most often this happens due to a worn flapper, incorrect float height, mineral buildup on the valve seat, or a faulty fill valve.

How do I stop my toilet from running?

Start with a dye test, check water levels, adjust the float, and replace the flapper if needed. If those steps don’t help, inspect or replace the fill valve.

Why is my toilet running on and off by itself?

This “ghost flushing” is usually caused by a slow leak from the tank into the bowl—often a flapper or flush valve seat issue.

Can a running toilet increase my water bill?

Yes. Even a small internal leak can waste hundreds or thousands of gallons per month.

When should I call a plumber instead of trying DIY?

If multiple parts seem worn, adjustments don’t resolve the issue, or you notice additional plumbing symptoms (gurgling drains, odors, fluctuating bowl levels), professional service is recommended.