The reason why you need a reverse osmosis water filter is mainly the following content. Because there are always microbial secondary pollution in the daily use of water.The water is purified by the waterworks and supplied to thousands of households. But tap water that even meets health and safety standards, can also be contaminated secondarily during  use, which poses a risk to human health. The health risks of drinking water at home come primarily from microbial contamination. Let's take a look at what will cause microbial secondary pollution.

1. Improper operations in the process of using tap water

Leakage of water pipe network system: Due to the disrepair of the water supply pipe network, the pipe network is damaged, and the sewage sludge in the surrounding environment enters the water supply system, resulting in the pollution of tap water. 

Pollution of reservoirs (tanks): High-rise buildings use roof tanks, cisterns, or pressurized pumps for water supply. If these auxiliary facilities are not regularly disinfected and maintained, there is often a potential pollution hazard.

Siphonage backflow in the water point: When the main water pipeline network stops water for some reasons, and the booster pump is still working normally, the water in the sewage pool that has flowed out will siphon back and flow to the users of low-rise or adjacent buildings, causing pollution .

Incorrect connection of the pipe network: For example, the wrong connection between the sewage pipe and the water pipe will cause the sewage to enter the water pipe network.

2. Improper use of household water dispensers

As the water comes out of the water dispenser, the pressure in the bucket decreases, the air enters the water dispenser and the bucket, and the microorganisms in the air will survive and multiply in the water dispenser, then the water from the water purifier has been polluted already .So in this way, you’d better buy a reverse osmosis water filter.

3. Improper drinking habits

Drinking raw water: Raw water, especially tap water, may contain bacteria, viruses, and parasites that are harmful to the human body. Drinking raw water containing pathogenic microorganisms can easily cause acute gastroenteritis, viral hepatitis, typhoid fever, dysentery, and parasitic infections.

Drink long-standing water: After the water is boiled and left for too long, microorganisms in the air will enter the water and multiply, thus polluting the water quality. 

Bottled water is polluted: some barrels of bottled water is used for an extended period of time, and the cleaning and disinfection are not in place, thus the pollution in the barrel is serious; During the transportation of bottled water, there are few health and safety measures, most of which are transported in the open air, and they are highly susceptible to pollution from the external environment.