With the rapid development of the industrial market, lead is widely used in all walks of life, lead pollution to the environment is becoming more and more serious, the health of human health is also becoming more and more serious. Lead affects human health mainly through food, drinking water and air. When metallic lead enters the body, a small amount is metabolized out of the body, while a large amount is deposited in the body.
There are two main sources of lead in drinking water. One is the arbitrary discharge of industrial pollutants and wastewater (mainly: smelting, mining, chemical, printing and dyeing and other industries) and the wide application of pesticides and pesticides in agricultural production. The other is the lead release caused by the corrosion of the urban tap water distribution network and the excessive lead in the faucet itself. This is not only the main source, but also the main reason for the harm to human health caused by lead in drinking water.
At present, most of the water pipes used in my country are leaded metal pipes. Since tap water uses chlorine as a disinfectant, the residual chlorine in the water accelerates the erosion and aging of leaded water pipes. Generally, water pipes that have been used for more than 5 years will increase the release of lead, and the concentration of lead in tap water will also increase.
Therefore, even if the tap water has reached the limit standard for safe drinking when it leaves the factory, the lead content in the water may exceed this limit when it reaches the user's tap after being transported through a long water pipeline network. The lead levels in the water at this time are not safe for drinkers.
The impact of excessive lead on the human body is significant, so how can we ensure the safety of drinking water?
Lead is a heavy metal, and how to prevent heavy metal pollution has become a common problem. If after relevant tests, there is a problem of lead exceeding the standard in your tap water, it is recommended that you turn on the faucet and release a certain amount of water before using it. If economic conditions permit, please choose to install a deep water purification system for yourself and your family, which can effectively remove heavy metal pollution and other various germs and bacteria, and ensure the safety of drinking water for you and your family.