Why there is a hole in Washbasin?

Dear Readers,

When you go to wash your hands or rinse a glass out, you may have noticed a hole on the upper part of the sink.

 

This is in addition to the drain at the very bottom to easily empty the basin. If there’s already a perfectly functioning drain, why is there an extra hole in the sink? And why would it be higher up? We will discuss the purpose of the hole in the washbasin in this article.

These seemingly mysterious holes actually serve two purposes. One is to prevent overflow of water and Another reason for hole in the wash basin is that it provides an escape route for the air in the drain (Like a Vent).

Overflow Prevention: Imagine filling the basin with water for various reasons—soaking your hands, cleaning an item, or even just wiping down a room. Sometimes, distractions occur, and we forget to turn off the tap. The result? A potential flood! To prevent this, washbasins are designed with an extra hole. If the water level rises too high, it can escape through this hole, saving you from a watery disaster.

Faster Drainage: That extra hole isn’t just for show. It helps water flow more efficiently down the drain. Without it, air trapped in the drain creates resistance, slowing down the drainage process. The hole provides an escape route for the air, allowing the sink to drain faster.