Why do bottled and barreled purified water taste disgusting after two days?

There are many kinds of water on the market at present. What water is good to drink?

While the trace elements needed by human body are removed in distilled water, some original organic substances in the water are not removed. Long-term drinking will not only lack some trace elements, but also may drink some organic substances into the body, which is not good for the health. Magnetized water is water under the action of magnetic field. It is said that it can soften cardiovascular and cerebrovascular diseases and prevent gallbladder kidney calculi, but experts stress that it needs to be verified after long-term practice. Mineral water is groundwater that comes from deep underground and flows through some rocks. The trace elements in it have health-care components needed by human body. But many mineral waters do not meet the hygiene requirements. Even qualified mineral water requires different kinds and quantities of trace elements due to different physical conditions, so trace elements and ions in mineral water are not beneficial to everyone. Pure water refers to purified water. Proper drinking of pure water by normal people is helpful to the microcirculation of human body. However, in the process of treatment, not only bacteria, viruses, pollutants and other impurities in water are removed, but also trace elements and minerals beneficial to human body are removed. It is advisable to make drinks and drink them occasionally, but not for a long time.

What is the standard of drinking water?

Drinking water refers to water for human consumption and daily life, including personal hygiene water, but excluding water for aquatic organisms (such as fish farming) and water for special purposes. At present, the latest drinking water standard is the Hygienic Standard for Drinking Water issued in 2006, which is mainly based on three aspects to ensure the safety and hygiene of drinking water, namely, to ensure the good sensory characteristics of drinking water; Prevent the outbreak of water-borne infectious diseases; Prevent acute and chronic poisoning and other health hazards. The indicators for controlling the health and safety of drinking water include four categories: microbial indicators; Sensory characteristics and general chemical indexes of water; Toxicological indicators; Radioactivity index.

What should I do if there is a strange smell or odor in the water?

When the water is found to have an odor, you can't drink it any more. The situation should be reported to the local health supervision immediately, and the centers for disease control and prevention at all levels can test the water quality. Find out the cause of pollution, eliminate odor and odor, you can continue to drink. Odor and odor in water may be caused by chemical or microbial pollution of water. If the content of iron, copper, manganese or zinc ions in water is high, the water will have a taste; Actinomyces and algae can make water stink; When the content of phenol in water is high, chlorophenol can be produced after chlorination and disinfection, which has a foul smell.

Can you still drink water when you find that it is colored?

Safe drinking water should be colorless. When the water has color, it can't be drunk any more. The situation should be reported to the local health supervision immediately, and the centers for disease control and prevention at all levels can test the water quality. After finding out the cause of pollution and eliminating the chromaticity, you can continue to drink. The color of water may be caused by colored substances (such as humic acid), metals or high-color industrial wastewater pollution. The Hygienic Standard for Drinking Water stipulates that the chromaticity shall not exceed 15 degrees.

What should I do if the water is turbid?

Safe drinking water should be clear and transparent. When the water becomes turbid, you can't drink any more. The situation should be reported to the local health supervision immediately, and the centers for disease control and prevention at all levels can test the water quality. Find out the cause of pollution, and after clarification, you can continue to drink. The turbidity of water is caused by particulate matter (such as clay and silt), plankton and other microorganisms. Water turbidity not only affects the sensory effect, but also affects the disinfection effect of water and increases the dose of disinfectant. The Hygienic Standard for Drinking Water stipulates that the turbidity shall not exceed 1 NTU, and it shall not exceed 3 NTU under special circumstances.

What should I do if I find something wrong with the water quality? (Transfer from emergency)

(1) When you move into a new house and find water pollution, immediately notify the water supply department and the property management department, find out the cause of pollution, remove pollutants, strengthen water quality treatment, improve water quality, and ensure that drinking water meets the sanitary standard for drinking water quality. As users, we should strengthen self-protection. If users use water purifiers, they should choose or use them correctly, and pay special attention to cleaning and disinfection, so that the tap water at home can meet the hygienic standard of drinking water quality. (1) When water pollution is found, immediately notify the water supply department and the property management department, find out the cause of pollution, remove pollutants, strengthen water quality treatment, improve water quality, and ensure that drinking water meets the sanitary standard for drinking water quality. (2) Strengthen self-protection. If users use water purifiers, they should choose or use them correctly and pay special attention to cleaning and disinfection.

Users who use drinking fountains and bottled water should pay attention to prevent water pollution. How to prevent it? (Transfer from emergency)

(1) Once the bottled water is opened for use, it must be used as soon as possible. Cold water can still be drunk directly within three days. Please drink hot water in three days. Because when bottled water is opened for use, bacteria will increase. I haven't used it for a month … it will affect my health if I continue to use it. (2) Water dispensers should also be cleaned regularly. It is best to clean it once a month. The disinfectant can be a special disinfectant provided by the manufacturer, or a cleaning solution with a solubility of 3-5% made of bleaching powder (hardcover). Put it in a bucket and put it on a water dispenser for soaking 1 hour. Turn on the tap to discharge disinfectant, and then flush the water dispenser with tap water (tap water is also put in the bucket and flows into the water dispenser as flushing water). If it's tasteless, replace it with new bottled water and then wash it with bottled water. (3) the purchase of drinking fountains should have products approved by the health administrative department. Bottled water should be bottled water with batch number produced by a water plant with hygiene license.

Can the direct drinking water system installed in some communities really be safe, hygienic and direct drinking?

On the basis of municipal water supply, some communities install water purification equipment to produce purified water or purified water for users to drink directly. In order to ensure the safety of direct drinking water, firstly, users need to ask the developer for the "hygiene license" of water purification equipment, and secondly, users need to ask the developer to test the water quality of the equipment installed for the first time after operation, and they can only put it into use after passing the inspection. The sanitary requirements of water purification equipment are high, and the purification components need to be replaced regularly. Therefore, users should also ask property or developers to test the water quality regularly (monthly or quarterly).

What are the causes of microbial contamination in bottled water?

(1) Disinfection is not strict during production; (2) The cleaning and disinfection of buckets are not thorough; (3) Pollution in the filling process; (4) The combined use of bottled water and drinking machine leads to the pollution of the water outlet system of drinking machine.

What should I do if drinking water is not normal?

1. First of all, judge whether your water is the only problem? If so, you need to find out your own reasons first. If you can't find out the reason, you can entrust the local disease prevention and control center for water quality testing. (2) If not only the drinking water in your home is abnormal, but also the residential buildings and communities are also abnormal, you should immediately contact the local health supervision office to reflect the relevant situation and ask for assistance in solving the drinking water pollution problem.

What are the household water purification equipment?

1. water purifier: a drinking water processor that takes municipal tap water as its water source and removes some harmful substances or microorganisms contained in the water after further treatment. According to different harmful substances in water, choose water purifiers with different filter elements. 2. Water purifier: a drinking water processor that uses municipal tap water as water source and removes all substances in water through reverse osmosis. It removes harmful substances and substances beneficial to human health from water. 3. Water softener: Most of these products sold in the market remove calcium and magnesium ions contained in water by ion exchange, so as to reduce the hardness of water. It reduces the hardness of water and increases the concentration of sodium ions in water, thus increasing the incidence of cardiovascular diseases.

What is secondary water supply?

Secondary water supply refers to the water supply mode that the drinking water of urban centralized water supply system is stored or reprocessed (filtered, softened and disinfected) by users and then transported to users through pipelines.

What are the secondary water supply facilities?

Including water storage tank (water tank), water inlet pipe, overflow pipe, drainage pipe, water inlet hole, exhaust hole, water treatment and water disinfection equipment, etc.

What factors will cause secondary water supply pollution?

(1) Unreasonable design: the secondary water supply pipeline is connected with fire water pipeline and industrial water pipeline; The overflow pipe and drain pipe of the water storage tank (water tank) are directly connected with the sewer pipe; There is no disinfection facility for the effluent of the water tank to prevent secondary pollution; The paint on the inner wall of the water tank does not meet the hygiene requirements, and the paint falls off and dissolves out. (2) The structure of water tank is unreasonable: the inner wall of cement water tank is not smooth; Rust of steel plate water tank; The observation hole of the water tank has no cover and lock; The water tank has no vent hole; There is no protective net cover at the opening of overflow pipe. (3) Poor management: nonstandard cleaning and disinfection; Disinfection facilities can not operate normally; The environment around the water tank is dirty and the cover of the water tank is not tight.

Relates to the definition and classification of drinking water hygiene and safety products.

All materials, plastics and organic synthetic pipes, fittings, protective coatings, water treatment agents, descaling agents, water treatment and other new materials and chemicals that come into contact with drinking water in the process of drinking water production and water supply are called drinking water hygiene and safety products (wading products). At present, the products sold in the market mainly include the following products: electric kettle, drinking machine, water purifier, water purifier, water softener, and various pipes and accessories.

Problems needing attention in purchasing wading products in the market

There are many kinds of electric kettle, water dispenser, water purifier and other products sold in the market, with mixed brands and different sanitary quality. When purchasing, we should first look at whether the product has a health license issued by the health administrative department. When purchasing such products, it is also necessary to check whether the brand and model of the products are consistent with the approval documents. If the inspection report cannot be provided, consumers should be cautious when buying. In addition, when buying a water purifier, you should also look at its instruction manual to see if the functions it promotes meet your own needs. When buying bottled water, you should buy products from large enterprises and well-known brands, because such enterprises produce more formally, which can ensure the quality in the production process and the safety and hygiene of water. Due to the reuse of bottled water, some small water shops directly recycle bottled water into tap water without disinfection, which can not guarantee the hygiene of water. Therefore, when buying bottled water, we should first check the address and telephone number of the manufacturer to prevent buying fake and shoddy products.

Problems needing attention in daily use of drinking fountains

The use of drinking fountains must first ensure the use of hygienic and safe bottled water, and then clean and disinfect the drinking fountains regularly. The disinfectant used by the company responsible for cleaning the drinking fountains should be able to issue a health and safety certificate (the health quality inspection report of the provincial health department), otherwise the drinking fountains may be polluted. Rinse the water dispenser several times after disinfection to prevent the disinfectant from remaining in the water dispenser. In addition, the service life of bottled water should not be too long (not more than 7 days), otherwise it will easily lead to the growth of bacteria in the water.

Problems needing attention in the use of water softener

The water softener can remove the hardness of water and make it soft. After being used in high hardness areas, the scale produced by water heating can be reduced, and the tea tastes good. However, because it can reduce hardness and increase sodium ions in water, long-term drinking will lead to an increase in the incidence of cardiovascular diseases, so if the hardness of local water is not high, don't use water softener. As far as Beijing is concerned, the water hardness in the west of Cheng Nan is relatively high, so water softener can be considered. However, due to its side effects, it is recommended not to drink softened water for a long time, especially for the elderly.

Problems needing attention in the use of water purifier

When the water purifier is used for the first time, it should be thoroughly cleaned according to the requirements of the manual. When in use, the filter element should be replaced regularly (3-6 months), because the purification function of the filter element of the water purifier will gradually decrease with the increase of the treated water, and the pollutants intercepted by the filter element will accumulate on the surface of the filter element, forming a secondary pollution source, which may also cause the reproduction of bacteria.