Water is an indispensable resource in our daily lives. Not only does it provide moisture to our body, but it is also a fundamental part of our daily needs, which is made up of about 70% water. Therefore, the quality of drinking water has a direct impact on our health.
According to national standards, drinking water is divided into three grades: first, second and first. These grades are based on the presence or absence of contaminants, magazines, microorganisms and bacteria in the water.
Class 1 drinking water stands for the highest quality standards and is suitable for direct drinking and use in a wide range of production and processing industries. This requires that the amount of residues, chemical composition, and microorganisms in the water be within reasonable limits.
In contrast, secondary drinking water has a slightly lower standard and may contain slightly harmful substances, but it does not have a significant impact on human health and needs to be boiled before drinking.
*Drinking water is mainly used for indirect drinking and has a high level of contaminants, which may contain harmful substances, bacteria, microorganisms, etc. Therefore, in our daily life, we should avoid drinking such water, such as for industry, agricultural irrigation, etc.
The quality of drinking water is closely related to the environment of the place. The environment of the water source should be effectively protected from pollution by industrial wastewater, pesticides and fertilizers. Although environmental pollution has become a global concern, it is particularly serious in China, which is dominated by industrialization. Thankfully, however, 10 of China's nearly 300 cities have particularly excellent water quality, reaching high quality levels.
At the top of the list is Liuzhou, an important city in the Guangxi Autonomous Region, which is known for its abundant water resources and excellent water quality management. Liuzhou's water sources mainly include important rivers such as the Langxi River, Rongjiang River, Bei River, Liujiang River, Zhongdu River and Luoqing River, which run through Liuzhou and provide sufficient water resources for the city.
Liuzhou City** has taken a variety of measures to ensure the quality of its water sources. First of all, a complete water quality monitoring system has been established, and the water source is regularly tested to ensure that it meets the national water quality standards. Second, the protection of water sources has been strengthened, strict protection zones have been set up, and all polluting activities have been prohibited. For the existing pollution sources, Liuzhou City is also actively engaged in treatment to keep the water sources clean.
In addition, Liuzhou has also done a lot of work in the construction and management of water treatment facilities. By investing in modern treatment technology, the raw water is treated efficiently and ensures that it meets drinking standards. At the same time, great attention is also paid to the operation and management of water treatment facilities to ensure the stability and reliability of water quality.
Zhangye City, Gansu Province, is known for its unique water resources and ranks second. Its water sources include major rivers such as the Dongda River, the Fengle River, the Beida River, the Honghongba River and the Heihe River. The water quality of these rivers is excellent and is the main drinking water for the citizens of Zhangye**.
The Dongda River is one of the most important water sources in Zhangye, which originates in the Qilian Mountains and flows through the urban area before flowing into Yumen Lake. Fengle River, as an important tributary in the southeast of Zhangye City, has beautiful scenery along the coast, providing sufficient irrigation water for farmland. The Beida River has sufficient water source and high water quality, and is known as"One of the top 10 ecological rivers", the surrounding nature is well preserved, the water is pure, and meets the needs of residents and agriculture. The Honghongba River and the Heihe River also provide high-quality water resources, supporting the ecosystem and residents of Zhangye City.
The third-ranked city of Guilin is located in the Guangxi Zhuang Autonomous Region, with which:"Mountains and rivers are the best in the world"The tourism industry is developing rapidly. Guilin's water sources mainly come from the Lingqu, Xunjiang, Guanjiang, Xiangjiang, Guijiang and Lipu rivers. In order to maintain the ecological environment of these water sources, Guilin has introduced advanced pollution control technology and wastewater treatment measures, and strengthened the supervision of the water environment to ensure the safety of water sources and the sustainable development of the local economy. By strengthening water pollution prevention and environmental protection investment, Guilin has successfully maintained its excellent water quality, providing healthy drinking water and beautiful landscapes for tourists from all over the world.
Qiandongnan Miao and Dong Autonomous Prefecture ranks fourth, with major water sources such as Bala River, Longjiang River and Xiaohuan River, and its excellent water quality is inseparable from the unique natural environment. These rivers not only provide high-quality drinking water for local residents, but also serve as habitats for a variety of rare species, which play a key role in maintaining ecological balance.
As part of the Guangxi Zhuang Autonomous Region, Chongzuo City ranks fifth with water sources such as the Heishui River and the Zuojiang River. These water sources not only provide clean drinking water for city residents, but are also an important part of Chongzuo's beautiful landscape.
The main water sources of Baise City, including the Nanpan River and the Buliu River, are ranked sixth. The quality of these rivers is excellent, which not only meets the drinking water needs of Baise City, but also provides valuable water resources for agricultural irrigation.
Turpan City, which ranked seventh, relies on water sources such as the Baiyang River and makes full use of its unique geomorphological and climatic advantages to provide sufficient water resources for local agricultural irrigation and residents' lives.
Hechi City, located in Guangxi, is ranked eighth with its abundant water resources and the city's continuous efforts, demonstrating its emphasis on water conservation and water quality improvement.
Lishui City in Zhejiang Province ranks ninth with its beautiful natural landscape and high-quality environmental management, and has become one of the representatives of excellent water quality in the country.
Finally, the city of Wuzhou in the Guangxi Zhuang Autonomous Region ranked 10th, demonstrating that even in industrially developed cities, the high-quality and sustainable use of water resources can be achieved through effective environmental protection measures.