1. You can call the 114 hotline for local service calls.

2. wechat WeChat official account pays attention to the "tap water" company, and it will locate its own company near you. WeChat official account's service hotline to repair the phone.

3. Search the nearby water supply company on the map, and then check the telephone number of the company through the network.

disinfection method of tap water:

at present, chlorination method is mostly 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 1 years and has relatively perfect production technology and equipment. Chlorine gas 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 gas still has some disadvantages in disinfection of tap water. The chlorinated tap water can produce carcinogens. At present, many improvement measures have been put forward by relevant experts.

Chlorine is dissolved in water and reacts with water to generate hypochlorous acid and hydrochloric acid, and hypochlorous acid plays a major role in the whole disinfection process. For odorous inorganic substances, it can completely oxidize and disinfect them. For living natural substances such as algae and bacteria, it can penetrate the cell wall, oxidize its enzyme system (enzymes are biocatalysts), make it inactive, and hinder the life activities of bacteria and die.

hypochlorous acid itself is close to neutrality, and it is easy to get close to bacteria, so it shows a good sterilization effect. Hypochloric ion also has a certain disinfection effect, but it is difficult to get close to bacteria (bacteria is negatively charged), so its sterilization effect is much worse than hypochlorous acid, so chlorine disinfection effect is better than bleaching powder disinfection.

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

At present, 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 ozone-treated water is limited. As for how long it can be kept, there is no exact concept at present. So at present, only a few developed countries use this treatment method.