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When purchasing a sink, many people may have noticed that there is a small hole at the top.
Some people think that this is just a decorative element, but this detail has a more important purpose.
The main purpose of the hole at the top of the sink is to prevent water from overflowing. A simple example: the sink can become clogged, causing the water level to rise. When the water reaches this hole, it should start draining into the sewer pipe. This hole has a clear purpose, but even here, everything is not so obvious.
The problem is that this hole in most situations remains simply a decorative element.
When installing a sink, many people do not even think about its connection, making a serious mistake. Engineers designed and implemented it for a reason, but many simply ignore its purpose.
Plumbers can tell from experience that this hole is not capable of coping with its task 100%.
Of course, if the drain is completely blocked and the water pressure is strong, this hole will not be able to drain all the excess water. As a result, the water will go up. But, it is important to understand that this hole is provided for comfortable use of the sink, and not for extraordinary situations.
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