If you believe that the water line to your toilet has sprung a leak, but you’re not sure how to confirm it, then here are some helpful tips on what you need to do.
Drop a dye tablet into the tank of your toilet and then wait for about 15-20 minutes. Then, when you return, check the toilet bowl and not your tank. If you notice that the toilet bowl contains colored water, then you likely have a leak on your hands.
There are other methods of determining if there is a leak in your water line. You want to check if your water level is above the overflow pipe in your tank. If this is the case, then you likely have a defective fill valve. If water is trickling down into your toilet bowl without you flushing it, then you have a leak in your water line. Another indicator of a leak is when your toilet makes a lot of noise when you are not using it (it sounds like running water).