Reply To: toilet keeps cycling on and off

: Why do 2 of the toilets in my house keep running for a few seconds, then stopping for a few minutes, then run for a few seconds, and so on? There is no man of the house here, and I need to learn how to fix this myself. My water bill has doubled because of this. Can anyone tell me what to do about it? Thanks!the tank ball or flapper(connected to the flush handle) is allowing water to leak out and the ballcock is refilling. replace the ball/flapper