I have 3 toilets (2 on second floor, one on first floor). When you flush them, the water level in the bowl appears "normal" once the flush is complete. When I go back to it a few hours later, the water level in the bowl is down to the top of the opening. Should I be concerned about this? What could be causing this? Thanks.
Toilet bowl water level
Hello,
I suspect your tank is leaking into the bowl. You wouldn't think so, but adding water to the bowl can make the level go down. Put a couple of drops of food coloring in the tank (not the bowl) and see if the bowl water becomes discolored within an hour. If so, you probably need a new flapper. (2 or 3 $$ and easy to replace.)