What is the per capita water consumption standard in China?

The earth's water reserves are very rich, * * * as much as145 billion cubic kilometers. Although there is a huge amount of water on the earth, it is pitiful that it can be directly used for production and life. First of all, seawater is salty and bitter, so it can't be drunk, irrigated or used for industry. Secondly, the earth's fresh water resources only account for 2.5% of its total water, and more than 70% of these rare fresh water resources are frozen in the Antarctic and Arctic ice sheets, and 87% of the fresh water resources are difficult to use, plus the hard-to-use alpine glaciers and permafrost snow. The fresh water resources that human beings can really use are part of rivers, lakes and groundwater, accounting for about 0.26% of the total water of the earth. The global freshwater resources are not only in short supply, but also the regional distribution is extremely unbalanced. In terms of regional distribution, the freshwater resources of Brazil, Russian Federation, Canada, China, USA, Indonesia, India, Colombia and Congo account for 60% of the world's freshwater resources. About 654.38+0.5 billion people in 80 countries and regions, which account for 40% of the world's total population, are short of water, of which about 300 million people in 26 countries are extremely short of water. Even more frightening is that by 2025, 3 billion people in the world will face water shortage, and 40 countries and regions will be seriously short of water.

The total water resources in China is 2.8 trillion cubic meters. Among them, 2.7 trillion cubic meters of surface water and 0.83 trillion cubic meters of groundwater. Because surface water and groundwater are mutually transformed and replenished, after deducting the amount of repeated calculation, the amount of groundwater resources that are not repeated with river runoff is about 0. 1 trillion cubic meters. According to internationally recognized standards, the per capita water resources below 3000 cubic meters are mild water shortage; The per capita water resources below 2000 cubic meters are moderately short of water; The per capita water resource 1000 cubic meter is a serious water shortage; Water resources below 500 cubic meters per capita are extremely short of water. At present, the per capita water resources of 16 provinces (autonomous regions and municipalities) are below the critical water shortage line, and the per capita water resources of 6 provinces (autonomous regions and municipalities) are below 500 cubic meters (Ningxia, Hebei, Shandong, Henan, Shanxi and Jiangsu). The total amount of water resources in China is not too large, ranking sixth in the world, but the per capita possession is even less, with 2240 cubic meters, ranking 88th among 153 countries counted by the World Bank. The regional distribution of water resources in China is also very uneven. The Yangtze River basin and its south area only account for 36.5% of the country's land area, and water resources account for 8 1% of the country. The area in the north accounts for 63.5% of the whole country, and the water resources only account for 19% of the whole country. What should we do in the face of this severe water resources situation:

1. Have the consciousness of cherishing water. For a long time, people generally believe that water is inexhaustible. They don't know how to cherish, and some even waste it in vain. We should know that China's per capita water resources are not rich, and the regional distribution is uneven, with great inter-annual differences and unpredictable changes during the year. Coupled with pollution and lack of water resources, tap water is even more difficult. Cherishing water is the basis of saving water. Only when we realize that "saving water is glorious and wasting water is shameful" can we pay attention to saving water all the time.

2. Develop good habits. According to analysis, families can save about 70% water as long as they pay attention to getting rid of bad habits. There are many habits related to wasting water, such as: flushing cigarette butts and breaking garbage with the toilet; In order to get a cup of hot water, a lot of cold water was put in vain; Wash potatoes and carrots before peeling, or wash them before choosing vegetables; Intermittent use of water (when opening the door to pick up guests, answering the phone, changing TV channels), with the faucet on; Forgot to turn off the faucet during the water stop; When washing hands, washing face and brushing teeth, let the water flow all the time; Do not check the faucet before going to bed or going out; The equipment leaked and was not repaired in time.

3, the use of water-saving appliances, family water saving in addition to pay attention to develop good water habits, the use of water-saving appliances is very important, but also the most effective. In order to save money, many people would rather let themselves go than replace water-saving appliances. In fact, it is even more uneconomical to pay so much water fee in the long run. Using water-saving appliances can not only save money, but also protect the environment. Isn't it killing two birds with one stone? There are many kinds of water-saving appliances, including water-saving water tanks, water-saving faucets and water-saving toilets. Just use a few, and make a lot of contributions to water saving!

4, check the leak and plug the flow, the "drip into the river" at home is not a joke. Always check the tap water pipes in your home. In order to prevent a slight delay, don't ignore the leakage of faucet and water pipe connector. If you find water leakage, please ask someone or yourself to repair it in time to block the running water. For the water leakage that cannot be repaired for a while, it is best to temporarily control the water flow with the main switch. Take good care of the faucet and unscrew the water gate of the faucet by half, then the leakage flow will naturally be small, and the water loss will be reduced by half at the same time.

For a long time, most people have the idea of saving water, but there is no concrete action, and extravagance and waste are still common. Some people think that the great cause of the family, coupled with the Yangtze River, always thinks that this source is inexhaustible and lacks the sense of urgency and urgency to save water.