Why is the Toilet Flushing Itself?
OK, so you just heard the toilet flush in the middle of the night. No one else is in the house, and you don’t think your home has a ghost. Later that night, you hear it again. Ughhh. How will you explain this to the plumber?
What you’re probably hearing is the toilet refilling as if it had been flushed. But how is that possible? Water in the tank is slowly leaking past the flush valve and into the bowl. As the bowl fills, the water silently flows down the drain line.