Are water conservation propaganda fools?

These are all theoretical calculations. I think you should calculate what will happen if people don’t save water. On the one hand, there are more than 20 million people in Shanghai, crowded into such a place, but they can There is only so much water to drink. If we don’t save water, I think at least millions of people will have to go to other places to drink water. If we rely on transporting water, the costs will have to be calculated separately, but these are not at all Necessary, there is no shortage of water, but there is less drinkable water and usable water. You say we have to spend a lot of money to treat it, but there is no other way to treat some water other than slowly diluting it, and some water is not polluted. It will take hundreds of years to dilute, and it will also take hundreds of years for nature's water cycle and purification, but we don't consider what will happen hundreds of years from now. We are short of water today, not to mention the climate-related water supply issues. I know that it is generally rainy in the south now, so there is no shortage of it, but it is different in the north. The rain is better, but if there is a drought or something, people will not be able to bear it. For some places where water is difficult to use all year round and transportation is not good, it is really water. It is more expensive than oil; and what if there is a drought in the south? A city’s water reserve cannot solve the water problem for one or two months. We humans can only drink so much water now, and our country has There is only so much drinkable water in the world. If we don’t use it sparingly, then sooner or later water will rise like oil prices. But we can’t increase the production of usable water. Even if we can, it will only be a drop in the bucket. Of course, if it is just From a regional perspective, there is no need to save water. Then you can go to the Antarctic or the North Pole and use the water there as you wish. However, the Earth is not full of Antarctica and the North Pole. Places with less water will always have more water. There are many more places;

You can refer to my country's electricity conservation situation. There is only so much electricity. When it is overloaded (although power plants are built), the country does not take measures to generate more power, but to Part of it is powered on, and part of it is powered off, because there is no other way, there is only so much electricity, and if it is not available, you stop. If it is used on water, you will not drink it if there is no water, then can you not drink it?