Water, which we drink every day, is something not to be taken lightly. A careless mistake can lead to illness!
Many households have a water dispenser for cool, boiled water that is readily available to drink. However, this convenience can pose health risks. If the water is not finished on the same day, it must be discarded. This is because nitrogen-containing organic compounds in the standing water continuously break down into nitrites. At the same time, the inevitable involvement of microorganisms will accelerate the decomposition of these nitrogen-containing organic compounds. The harm of nitrites to the body is well-known; they have a strong ability to bind with hemoglobin in the body, which can interfere with the normal oxygen transport function of the blood. Therefore, boiled water is best consumed on the day it is made.
Furthermore, many families today are accustomed to drinking bottled water. Even bottled water, which appears to be well-sealed, should be finished within three to four days of opening. This is because over time, bacteria can enter through the water inlet. Moreover, when the water dispenser dispenses water, it creates a negative pressure, inevitably drawing in some air. Bacteria and microorganisms in the air can also take advantage of this opportunity to enter. If not consumed within a short period, the bacteria count will exceed safe levels, and the purified water will no longer be pure.