Statistical records of water quality in China domestic provinces

Five provinces with the best water quality
1. Zhejiang (beautiful scenery, light industry, little pollution to water quality, excellent drinking water)
2. Heilongjiang (natural environment, cold climate, great purification of temperament, excellent drinking water)
3. Hubei (province of thousands of lakes, freshwater capital of China, excellent drinking water)
4. Jiangxi Province (few industries, high forest, no damage to natural environment)
5. Tibet (in plateau area, people's activities are very few, except for natural pollution, there is basically no external pollution)
Five provinces with the worst water quality
1. Jiangsu (heavy metal pollution, chemical pollution, the highest incidence in China)
2. Hebei (heavy metal pollution, high incidence)
3. Shanxi (coal mine, coking, natural weathering, heavy pollution)
4. Guangdong (heavy industrial pollution)
5. Guizhou (the natural environment is polluted, the fluoride content is too high, causing fluoride disease and rotten teeth, etc.)
The above are the five identities of poor water quality and water quality in China. If you are in a province with poor water quality, you don't need to worry too much. If you install a direct drinking domestic water purifier at home, all the pollution can be completely removed, and friends in the five provinces with good water quality don't need to worry too much. You should always pay attention to the changes of drinking water quality, and you can check it yourself if necessary Water quality, do a good job in advance prevention.
Common simple methods for water quality detection
Checking water temperature, observing color, smelling and seeing turbidity are the most convenient methods to distinguish water quality. The water temperature can be detected by thermometer. Generally, the water temperature with good water quality is relatively stable. If the water temperature changes abnormally, it may be polluted by industrial wastewater and domestic sewage. When a large amount of surface water seeps into the ground, the water temperature will also change.
Simple method of water quality detection
Clean water is colorless, once the water appears color, it means that the water quality is polluted. For example, red water may be caused by rust or algae; black water may be caused by metal pollution; yellow or brownish yellow water may be caused by excessive water purifying agent or pollution of chromium or humus.
Clean water is tasteless. If the water has a fragrant smell or a smell similar to the rotten cucumber, it may be caused by the massive reproduction of plankton such as algae and silicon, mainly in lakes and reservoirs. If the water has a metal odor, it is mainly caused by the aging of copper and zinc pipes or rust of iron pipes, which mainly appears in the water pipes. If the water has a rotten smell, it may be caused by the pollution It is caused by sewage pollution in sewers. It mainly occurs in places with damaged sewers and sewage inflow.
We can also use TDS pen to test the quality of water. TDS pen is used to test the TDS value and conductivity of water to judge the purity of water. It also has the function of testing water temperature and environment temperature. The product can be widely used in water treatment industry, drinking water industry, family, personal home tourism, field work, etc. as a drinking water quality inspection tool. We can judge whether the tap water is qualified by the PPM value. According to the national regulations, the PPM value of qualified tap water should be 50-300ppm, the PPM value of direct drinking water should be between 100-200, and the PPM value of pure water must be within 50. TDS can be bought on tmall.