Another way to reduce water waste in the bathroom is to add plastic bottles in your toilet tank. These bottles take up space in the toilet tank that would otherwise be refilled with water after every flush. The result is that you can reduce the amount of water you send swirling down the drain. To do this, take two plastic soda bottles and put an inch or two of sand or pebbles inside to weigh them down. Fill the bottles with water, screw the lids on, and put them in the toilet tank, making sure that they are away from any moving parts or operating mechanisms. Alternatively, you could purchase an inexpensive tank bank or float booster.