Why Does Your Bathroom Sink Have a Small Hole Near the Faucet?

Many bathroom sinks feature a small hole positioned near the faucet, leaving many people wondering if it’s there for a specific reason or if it’s just an unnecessary detail.

The Purpose of the Small Hole

This seemingly insignificant hole, located about a third of the way up the basin, actually serves a very important function. It’s a clever design feature that reflects the thoughtfulness of the sink’s creator, who anticipated various scenarios.

The hole connects directly to the drainage system beneath the sink. It acts as an overflow prevention system for those times when you accidentally leave the faucet running. If the water level rises to around two-thirds of the sink’s depth, the water will flow through the hole and into the drainage pipe, preventing the sink from overflowing and flooding the bathroom.

Potential Problems with the Overflow Hole

While the overflow feature is undeniably useful, it can sometimes lead to issues. Its location makes it a common spot for bacteria and mold to accumulate, which can cause unpleasant odors to seep from the pipes.

How to Keep It Clean and Odor-Free

If you start noticing a bad smell in your bathroom, particularly from this small hole, here’s a simple fix: mix vinegar and baking soda and pour it into the hole.

The chemical reaction between the vinegar and baking soda will break down grime in the pipes in just 5 to 10 minutes. Afterward, rinse the sink with warm water to flush out any remaining residue, leaving your bathroom fresh and clean.

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This small hole may seem like a simple feature, but it plays an important role in keeping your sink safe from overflow and ensuring your bathroom stays clean and fresh.