Bathtubs. Did you know that when you take your heavenly bath in a bathtub, you use a whopping 60–70 gallons of water at least, while it only makes around 10–20 gallons of water to take a shower. The difference is huge! Coming to the reason as to why bathtubs will be illegal, let's look at some water statistics: By 2025, half of the world’s population will be living in water-stressed areas. 31% of schools don’t have clean water. 3.6 billion people worldwide (nearly half the global population) are already living in potential water-scarce regions at least one month per year, and this could increase to 4.8–5.7 billion in 2050. Two-thirds of the world’s population currently live in areas that experience water scarcity for at least one month a year. In Cape Town, one of South Africa's biggest cities, the government announced: “day zero” – when dam levels would be so low that they would turn off the taps in Cape Town and send people to communal water collection poi