Abstract: A water suction apparatus for scrubbing machines having a non-rotatable frame (11), a rotatable scrubbing-brush (1 a) and a rotatably driven holder (1) therefore. The holder has a ring (7) around its periphery, the ring being provided with nozzles (2) which have lower ends in gliding contact with or positioned immediately above the floor and which suck dirty scrub water therefrom, the ring also being provided with lips (5) which are located between the nozzles and have lower ends in gliding contact with the floor and which transmit dirty scrub water to the nozzles when the ring rotates. The frame (11) has a ring (4) connected thereto which sealingly cooperates with the rotatable ring (7) on the holder (1) and which is provided with at least one nozzle (6) which is connected to a conduit (12) transmitting dirty scrub water from the nozzles (2) on the rotatable ring to a water separator or the like.