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According to the latest data released by the Ministry of Land and Resources recently, in 2015, among the 5118 groundwater monitoring points in 202 prefecture-level administrative regions in China, the proportion of poor and poor water quality monitoring points accounted for more than 60%. Not ideal. 
In addition, the data also showed that compared with the previous year, the total number of water quality monitoring points with continuous monitoring data was 4552, of which 2837 were monitoring points with comprehensive changes in water quality, accounting for 62.3% of the total number of monitoring points; There are 795 monitoring points, accounting for 17.5%; there are 920 monitoring points showing a trend of deterioration, accounting for 20.2%.
Tap water refers to water that is produced and used by people who meet the national drinking water standards after being purified and disinfected by a water treatment plant. It mainly draws rivers, lakes and groundwater through the water pumping station of the water plant, and undergoes processes such as sedimentation, disinfection and filtration, and finally delivers it to various users through the water distribution station. The water is supplied to the user by the pump through the water distribution pipe. Must meet the national standards for drinking water hygiene.
Water in various states buried extensively below the surface is collectively referred to as groundwater. Atmospheric precipitation is the main source of groundwater. Usually not processed.
What are the hazards caused by water pollution?
Water pollution affects industrial production, increases equipment corrosion, affects product quality, and even prevents production from proceeding. The pollution of water affects people's lives and destroys ecology. It directly harms people's health and causes great damage.
☆ After harming people's healthy water pollution, pollutants enter the human body through drinking water or food chain, causing acute or chronic poisoning. Arsenic, chromium, ammonium, b benzo (a) oxime, etc., can also induce cancer. Water contaminated with parasites, viruses, or other pathogens can cause a variety of infectious and parasitic diseases. Water contaminated by heavy metals is harmful to human health. Water and food contaminated with cadmium can cause kidney and bone lesions after eating, and ingesting 20 mg of cadmium sulfate will cause death. Poisoning caused by lead, causing anemia, nervous disorder.
☆ Harm to industrial and agricultural production After water pollution, industrial water must be invested in more processing costs, resulting in waste of resources and energy. The food industry requires more stringent water quality, and unqualified water quality will stop production. This is also a factor in the low efficiency and poor quality of industrial enterprises. The use of sewage in agriculture has reduced crop yields, reduced quality, and even caused damage to humans and animals. Large areas of farmland have been polluted and soil quality has been reduced. The consequences of marine pollution are also very serious, such as oil pollution, causing the death of seabirds and marine life.
☆ Hazard of water eutrophication Under normal circumstances, oxygen has a certain solubility in water. Dissolved oxygen is not only a condition for the survival of aquatic organisms, but also the various oxidation-reduction reactions of oxygen in water to promote the conversion and degradation of pollutants, which is an important reason for the self-purification ability of natural water bodies. The discharge of domestic sewage containing a large amount of nitrogen, phosphorus and potassium, a large amount of organic matter degraded in water to release nutrients, promote the accumulation of algae in the water, the plant grows wild, the water body is poorly ventilated, the dissolved oxygen is reduced, and even an anaerobic layer appears. As a result, a large number of aquatic plants die, the water surface is black, and the water body is stinky to form a "dead lake", a "dead river", a "dead sea" and then become a swamp. This phenomenon is called eutrophication of water. Eutrophic water has a large odor, deep color, and many bacteria. The water quality of this water is poor and cannot be directly used.
Ministry of Land and Resources: More than 60% of groundwater in 202 cities are unqualified
Abstract According to the latest data from the Ministry of Land and Resources, in 2015, the groundwater quality of 202 cities in China was worse than 60%, while the water quality was only 9.1%! What does it mean behind such a shocking number? What will happen to our life...
According to the latest data from the Ministry of Land and Resources, in 2015, the groundwater quality of 202 cities in China was worse than 60%, and the water quality was only 9.1%! What does it mean behind such a shocking number? What impact will it have on our lives?