Abstract: A bucket having separate reservoirs for segregating clean wash liquid, such as water, from dirty or contaminated wash liquid. In addition, the bucket contains a discharge transfer compartment for wringing a mop and providing for the immediate transfer of its discharge to a discharge storage reservoir by way of holes in the floor connecting the discharge transfer compartment and said reservoir. The floors of the discharge transfer compartment and the clean liquid reservoir are shaped with adequate slope or curvature so that particulate material discharged in either is caused to move to the lowest point for removal. Further, the clean liquid reservoir contains a shelf with holes sized to permit the passage of any residual particulate material transferred by a wrung mop entering the clean water to the curved bottom of said reservoir under said shelf so that it cannot be disturbed by the reentry of the mop in the portion of the reservoir above the shelf and thereby reenter solution and re-contaminate the mop.