If there is water pooling around the toilet base, or you notice that stains are appearing, this is in an indication that the pan seal has failed. The pan seal is located at the back of the toilet ...
Sometimes toilets act up. One common problem your trusty throne can develop is that it always runs. This constant flow of water is a noisy nuisance -- and it's also a money-waster that you'll end up ...
Homebuilding & Renovating on MSN

How to fix a toilet that keeps running

This might not necessarily be a problem that needs a plumber ...