Most bathroom sinks include a small opening near the faucet, and many people are unsure whether this feature serves a real function or if it is simply part of the design. Although it often goes unnoticed, this opening has a clear purpose and is more helpful than it appears at first glance.
This small hole, usually positioned about one-third of the way up the basin, is intentionally built into the sink’s structure. It connects to the drain system and is designed to guide extra water downward. If the faucet is left running while someone briefly steps away, the rising water level can enter this opening before reaching the top of the sink. This provides an additional path for water to exit the basin and helps maintain a safer, more controlled flow…
