1. First, the water source must be pumped from rivers and lakes to water plants (the water intake is different in different regions, and the water source directly affects the drinking water quality in a region);

2. After coagulation, sedimentation, filtration and disinfection, it is pumped into the tap water pipeline by a water pump at high pressure. Generally, the main pipeline adopts prestressed concrete pipe, steel pipe, PE pipe, ductile iron pipe and other pipes;

3. Finally, it is diverted to the user's faucet. The whole process has to go through many water quality tests, and some places have to go through secondary pressurization and secondary disinfection before they can enter the user's home.

Extended data

At present, most tap water is chlorinated. The main purpose of chlorination of public water supply is to prevent water-borne diseases. This method has been popularized for more than 100 years, and it has relatively perfect production technology and equipment. Chlorine used for disinfection of tap water has the advantages of good disinfection effect, low cost and almost no harmful substances.

However, after understanding and studying the theoretical data, it is found that chlorine still has some disadvantages in disinfection of tap water. Chlorinated tap water will produce carcinogens. At present, relevant experts have put forward many improvement measures.

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