Water Park at Home? Is legal, permissible, according to code? It turns out that the answer is "yes" to all of the above. You can have all the fun in the world in your own master bathroom if you follow this home owner's simple recipe: make sure to locate your main bathroom area in the part of your home that has large windows for light and a view and move the walk-in closet to the inner, window-less spot. Believe it or not, originally this home had them reversed! Then, select the Kohler whirlpool tub, which fills all the way to its very edge and then overflows(!) safely into a special overflow drain. Have a water running from the ceiling - on purpose! And...yes, glass mosaic tile is pretty cool too...