It's crazy how much damage can be caused by the failure of a $10 part, the toilet flapper valve. An apartment on the 7th floor of my building had a flood once a

It's crazy how much damage can be caused by the failure of a $10 part, the toilet flapper valve. An apartment on the 7th floor of my building had a flood once and it went right down to the ground floor, causing damage to half a dozen other units. > They also damaged the valve that manages water flow from the tank to the bowl. This seems rather dubious. I don't really see how an idiot tenant could damage the flapper valve through being aggressively clueless. On the other hand, how long was it since the OP replaced the flapper valve? They are supposed to be replaced every few years. It seems more likely that the problem was a combination of the tenant being an idiot (flushing baby wipes) and poor landlord maintenance of the property.