Hospitality facilities require relatively large amounts of water and create large amounts of waste water as well. Water is used by hotels in guestroom areas for bathing and sanitary purposes. F&B operations use water for food preparation, cooking, and a variety of cleaning purposes. Laundry operations are also substantial consumers of water. Grounds and landscaping can consume significant amounts of water as well. Swimming pools require a substantial amount of water when filled and ongoing amounts to replace water lost to evaporation and other losses.