Water will never expire on the planet. However, unfortunately, this doesn't mean we will have fresh drinking water forever. Brazilians waste an average of 5,5 millions liters of fresh water. In America, each person uses about 80-100 gallons of water per day. This may come as a bit of a shock regarding to 7,125 billions of people using fresh water for their needs every single day. In some underdeveloped countries, 50% of its population consume polluted water. Some people are having drinking water on their toilets so they can flush, others don't have fresh water even to drink and quench their thirst. It’s obvious that something really gotta give. The bottom line is the natural climate, which highly influences to the local civilization. The least we can do is conserve water.Mayve having a water tank adapted to get rainwater, so you can use this due water supply to clean the house, wash the clothes, etc. That would make a difference already.
Thanks in advance,