We all know that water is closely connected with our lives. The quality of the water we drink every day is directly related to our quality of life and our health. Water is closely linked to our lives, but in recent years, various water pollution incidents have occurred frequently. Occurred, it has made us drink water. The water quality of tap water for family drinking should be judged. It is difficult to distinguish these problems if they are not professionally tested.
Here are some simple methods for the general consumer.
One, tasting method : The most direct way is to carefully taste the taste of water when drinking water. If it has a mouthfeel, the hardness of the water is too high and there is a lot of impurities.
Second, look with your eyes : Use a glass with high transparency to be filled with a glass of water. See if there is any fine substance suspended in the water against the light. Allow to stand for three hours, and then observe whether there is any sediment at the bottom of the cup. If so, the suspended impurities in the water are seriously exceeded. Secondly, we have to look at the color of water: In fact, the color of water is mainly measured for natural water or treated water. The main reason for the color of water is some water-soluble rot, organic or inorganic substances. The industrial wastewater is also one of the important reasons for the discoloration of water. For example, if there is rust in the water, the water will turn into a pale brownish red, while the sulfide will make the water turn into a light blue, some algae. The growth also makes the water green.
Third, smell : Use a glass to pick up a glass of water as far as possible from the faucet. Then use your nose to smell if there is any bleaching powder. If you can smell the bleaching powder, it means that the residual chlorine in the water is excessive. Long-term consumption of tap water with excessive residual chlorine will be serious. It can harm the nervous system and the consumption system of the human body, and it can cause cancer to occur seriously.