To provide a water washing facility in which at least three water washing steps are performed on one workpiece W in one water washing booth 2.

Each of water-suppliable washing water storage tanks 36-38 is arranged in each of water washing steps. A washing water feeding means for feeding the washing water in one washing water storage tank corresponding to any of water washing steps to the water washing booth 2 is arranged side by side with the washing water storage tank. Switching valves 55a, 55b for returning the waste water recovered in each water washing step except the final water washing step to the washing water storage tank 36 or 37 corresponding to the water washing step being in progress and returning the waste water recovered in the final water washing step to the washing water storage tank 37 corresponding to the last water washing step are arranged in a waste water recovery pipeline system from the bottom of the water washing booth 2. An overflowed water pipeline 56 for moving the stored water from the washing water storage tank 37 corresponding to the water washing step except the final water washing step to the washing water storage tank 36 corresponding to the last water washing step is arranged, and an overflowed water pipeline 57 is arranged on the washing water storage tank 36 corresponding to the first water washing step.