Why should we save water?
Thread Content
In our daily lives, we emphasize the need to conserve water, considering it a good solution to address water scarcity. I’m a bit confused – saving water means saving energy, and water is indeed pumped up from underground using electricity, which is true. But water is recyclable; no matter how we use it, it will eventually return to the ground. As long as we do not pollute the water, the total amount of water on Earth will remain constant. So, does saving water serve any other purpose besides saving energy? Please engage in active discussions and assign scores based on the technical complexity
Using water itself is a form of pollution of water resources, and cleaning a single drop of water requires more energy. Although energy is conserved, it has been transformed among them, with some turning into an unusable resource. For example, drinking pure water can quench thirst and cause sweating, but when one is thirsty, it’s not possible to collect the sweat from the body and drink it. So from this perspective, water is also non-renewable and will be depleted as well.
The original poster actually confuses water conservation with energy conservation. Please, the original poster, relearn the true aspects of water conservation before we discuss further.
The original poster said that there is always enough water on land. Then take a look at whether the number of glaciers has decreased – groundwater levels are also dropping. We’re essentially overusing these resources; there’s a deficit each year, though it’s not large. What gets consumed by this deficit is the water on land, until those reserves are exhausted. How will people living in inland areas survive then? Will they rely on rain?
Is all the missing water gone into the ocean?
Both domestic water use and industrial water use by humans are part of the Earth’s water cycle. Excessive extraction of water can disrupt this healthy cycle, leading to depletion of water resources, increased water pollution, and ecological damage. For example, groundwater primarily comes from atmospheric precipitation and the infiltration of surface water; excessive extraction of groundwater leads to a drop in groundwater levels that prevents sufficient replenishment, resulting in a shortage of water available ； The used groundwater is discharged as wastewater, and if not treated, it can cause pollution of other water bodies.
There are three problems related to water on Earth: too much water, too little water, and polluted water. The first problem is flooding, the second is drought, and the third is water pollution. These three issues are interconnected. When there is too much water, we are unable to make effective use of it; we cannot utilize floods because they occur irregularly, and we cannot use seawater either as it is too polluted. Without water due to drought, it is even more impossible for us to survive. 70% of the water we use is for industrial cooling purposes, and 70% of that water evaporates, meaning half of it returns to the sky, while the remaining half becomes heavily polluted, only contributing to the deterioration of our environment. Moreover, the water that evaporates disrupts the existing balance in the environment, altering the distribution of water. Given this, doesn’t it mean that water conservation is very important for us? In fact, there is also an imbalance in the distribution of water worldwide, as well as an imbalance in population distribution; these issues are even more severe for China. We can talk slowly when we have time. Wish everyone a happy Spring Festival!