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 ...
An average leaking toilet will waste up to 78,000 gallons of water a year. Think about it — that’s enough water to fill two average-sized backyard swimming pools. What follows are some common toilet ...
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How to fix a toilet that keeps running

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