Filling a tupperware with liquid
Water or other liquid being poured slowly into a large glass or tumbler
Tap water filling in a kettle
Turning on tap, filling bathtub and turning off, slightly squeaky
Tap is turned on and bathtub is filled with water.
Filling a jug with tap water with pressure.
Professional espresso machine on, hot water running, filling mug.
Dentist drilling a cavity