Simple self-test method for tap water: See if the water you drink at home is clean?

Recently, benzene content in tap water in Lanzhou city was found to be seriously exceeded, which once again aroused people's concerns about tap water quality and sudden tap water accidents . It is true that the water quality of my country's urban water supply has been continuously improving over the years, but it is undeniable that due to surface water pollution and aging pipes, in addition to substances such as mud, rust, and various microorganisms, there are also pollution sources such as residual chemicals and heavy metals that are difficult to distinguish with the naked eye, making sudden incidents such as Lanzhou benzene contamination of tap water common. If the excessive benzene content had not been discovered by accident, Lanzhou residents might have to drink tap water with excessive benzene content until September!

So, for us ordinary people, in the absence of professional testing methods, how should we judge whether the tap water is safe to drink? In what cases should we consider using a water purifier for terminal treatment? Here are only some relatively simple methods for your reference.

First, detect impurities in water

Use a relatively transparent container, such as a glass cup without prints or a disposable plastic cup. Fill the cup with water and look up to the light to see if there are any tiny substances suspended in the water. Let it sit for about three hours and observe whether there is any sediment at the bottom of the cup. If so, it means that the suspended impurities in the water seriously exceed the standard.

Second, check whether the chlorine in the water exceeds the standard

1. Use a glass to collect a glass of water as far away from the faucet as possible, then smell it with your nose to see if there is any smell of bleach (chlorine). If you can smell a slightly pungent smell, it means that the residual chlorine in the tap water exceeds the standard. 2. Drink hot boiled water to see if there is any smell of bleach (chlorine). If the water does not taste sweet, but instead has a smell of bleach, this is also a phenomenon of excessive bleach.

Third, detection of heavy metal ions

Use tap water to make tea, and observe whether the tea turns black after overnight? If the tea turns black, it means that the iron and manganese content in the tap water seriously exceeds the standard. You should use a water purifier equipped with iron and manganese removal filters for terminal treatment.

Fourth, check the color of tap water

We need to pay attention to this in our daily lives, especially when cooking rice. If the rice is dark and not white in color (the reason for the discharge of rice), then the water is seriously discolored and you should be alert.

The above are the methods I want to share with you to detect whether the tap water is qualified or exceeds the standard. After reading this, you may as well try the above methods.