[retiredguy123]

Your toilet may seem to be working fine, but you may notice that the water level in the bowl has become significantly lower than it used to be. If so, remove the tank lid and check to see if the small rubber tube from the fill valve to the overflow plastic pipe is firmly attached to the overflow pipe so that the water is being properly aimed to flow directly into the overflow pipe. This rubber tube can become disconnected from the overflow pipe so that the water flows into the tank and not directly into the overflow pipe. It can also cause a leak under the tank lid. This problem is an easy fix that can usually be done without any tools or parts.