A faience friend is now in any house or apartment. Its form and shade may change, but the essence, and therefore the main problems, remain unchanged. Over time, even the most sophisticated toilet models begin to leak. Every time I am amazed how many big problems one small trickle can cause.
To put an end to these troubles, you previously had to go into the tank and deal with the drain valve. The procedure is not the most pleasant. But this is where the main problem lies. Due to the poor condition of the water and the presence of all sorts of foreign particles, the rubber band no longer fits tightly and begins to leak.