I know I will eventually need a plumber, but I would like a temporary solution to this problem. I have a toilet that has a leak coming from above the shut off valve. The valve is off, but the water still drips. There is water in the tank that never drains or seems to evaporate. If the leak doesn't empty the tank where is the water coming from? Do I need to drain the tank? If there is still a leak after I drain it should I find a way to keep the flush valve open so the water goes into the toilet? The water leaks outside the toilet, into a small basin.