Sink faucets have aerators for several reasons:
Water conservation: Aerators mix air with the water stream, reducing the overall flow rate without compromising the perceived water pressure. This helps conserve water by reducing unnecessary usage.
Splashing reduction: The aerator helps to control and regulate the water flow, preventing excessive splashing when the water hits the sink.
Enhanced comfort: The addition of air in the water stream can make it feel softer and more comfortable on the skin.