No Sweeping

Water bottles are swept into "Bottle Emptier" called building in Plumbing section of buildings. You need to build one and set it to accept polluted water under liquids. With this building and selection the dupes will bring bottled polluted water to it and the water will start dripping down from it.

You have to build a bottle emptier for any sort of liquids you want to sweep up. It will empty one tile to the side of itself and you can set it to clean or polluted water or both.