Is tap water light blue poisonous?

Tap water is light blue and poisonous.

There are generally two reasons for this situation. One is the blue disinfection flushing water tank for residential property, which restores the water supply before the disinfection water is completely discharged, and the water with the residual liquid of disinfection water flows to the user's home.

Another reason is that many families have added blue toilet cleaner or toilet cleaner spirit to the toilet water tank, but most water tanks have no backflow prevention device. Once the water supply is stopped, negative pressure will be generated in the tap water pipeline, and the blue solution in the water tank will flow back into the tap water pipeline. After the water supply is restored, blue water will flow out of the faucet.

If it is such water, it will be clear after a while. Let this liquid go, and you will be all right.

When negative pressure is generated in the tap water pipeline, the blue solution in the water tank will flow back into the tap water pipeline. In this way, when the water comes, blue water will flow out of the faucet.

Tap water:

Tap water refers to the water purified and disinfected by the tap water treatment plant, which meets the corresponding standards and is used for people's life and production. Domestic water is mainly extracted from rivers, lakes, groundwater and surface water through the water intake pumping station of the water plant.

According to the national sanitary standard for drinking water, the waterworks are treated by sedimentation, disinfection, filtration and other technological processes, and finally delivered to various users through the water distribution pump station.

Chlorination method is often used for disinfection of tap water. 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. After chlorination and disinfection, tap water will produce carcinogens, and relevant experts have also put forward many improvement measures.

At present, disinfectants include chlorine dioxide and ozone in addition to chlorine. The use of alternative disinfectants can reduce the generation of harmful substances and improve the treatment efficiency.

The safe disinfection method of tap water in the world is ozone disinfection, but the treatment cost of this method is too expensive, and the retention time of water after ozone treatment is limited. As for how long it can be preserved, there is no exact concept. So only a few developed countries use this method.