For this reason, many families have installed water purifiers to ensure the safety of drinking water for their families. However, some people believe that the tap water at home is qualified by the water treatment plant. If the water purifier is installed again, it is a kind of repeated investment and unnecessary consumption.
Regarding this problem, users who have installed a water purifier and replaced the filter element will know that the original clean filter element is covered with yellow sand and other pollutants after a period of use. The harmful impurities that are visible and invisible are all drinkable into the body.
The first is the water pipe network. After the tap water leaves the factory, it is transported or stayed for a long distance through the water supply network, and various problems will occur when it reaches the user. Especially the long-lived tap water pipes will inevitably produce aging and corrosion problems after long-term use. The yellowing, sand, and rust problems in water quality in many areas are water pollution caused by aging water pipes.
The second is the pollution caused by the secondary water supply tower and water tank. If the water tanks of some high-rise communities have not been cleaned for a long time, they will store a large amount of contaminated impurities. Long-term accumulation will lead to heavy pollution of tap water, and the tap water delivered to each household will not meet the direct drinking standard.
Therefore, even if it is factory-qualified tap water, you still need a water purifier for deep purification before you can drink it with confidence. At this stage, there are many types of water purifier products on the market, with different price levels and uneven quality. So how should you choose a safe water purification product for your home?
1 There must be a product sanitation license approval
The Sanitary Supervision and Administration Measures for Drinking Water stipulate that: water-related enterprises must have a sanitation license issued by the sanitation supervision department, and be appraised by the technical supervision department, and meet the national "Drinking Water Quality Standards." If you don't even have this, I suggest you don't consider buying it.
The enterprise has a sanitary license approval document indicating that the enterprise has the qualification, ability and conditions to produce water purification equipment; the water purification products are safe and reliable, and contact parts will not cause secondary pollution. Only water purifiers with sanitary approvals are qualified products.
2 It is important to choose the right filter element
According to different purification principles and processes, water purifiers can be divided into microfiltration, ultrafiltration, nanofiltration, reverse osmosis and other types. Among them, RO reverse osmosis water purifiers have the highest filtration accuracy.
The pore size of the reverse osmosis membrane is only one-thousandth of that of bacteria and viruses, and only water molecules and dissolved oxygen are allowed to pass. Other impurities in the water such as chemical pollutants, bacteria, viruses, heavy metals and other harmful substances are almost completely intercepted and eliminated. As far as drinking water is concerned, it is recommended that you choose water purification equipment with higher filtration accuracy to ensure drinking water safety.
3 Must have perfect after-sales service
After purchasing certain brands of water purifier products, many consumers cannot find the repair service call or repair service method. This situation makes consumers very helpless and wastes resources. Many water purifiers become The furnishings.
The after-sales service of the water purifier mainly focuses on the replacement of the filter element. If the filter element is not replaced for a long time, the water quality will be polluted, and the water purifier will also become a "sewage device". When choosing a water purifier product, you must choose a brand with a complete after-sales service system, such as the use of the Internet of Things service system to track equipment usage, so as to promptly remind users to replace filter elements and deal with equipment failures.
