As the saying goes: good water brews good tea. To brew a perfect cup of tea, good water is indispensable, highlighting the importance of water quality in tea preparation. Many people are unaware that boiled water used for tea has an expiration date. Using expired water not only affects the taste of the tea but also poses health risks.

The lifespan of a cup of water is up to 16 hours

Boiled water exposed to air has a maximum lifespan of 16 hours; expired water may contain excessive levels of E. coli! For healthy individuals, long-term consumption of bacteria-laden water can have a gradual, cumulative effect on health, with more pronounced impacts over time.

Water quality experts explain that consistently drinking stale water is akin to consuming food with additives over a long period. Neglecting small details in daily water consumption can slowly degrade the body's internal health environment, potentially leading to declining physical condition.

Therefore, if you experience fatigue or weakened immunity, while paying attention to dietary hygiene, also examine whether your water consumption habits are correct. Don’t let your health be eroded by a daily cup of water.

Water—boiling for three minutes ensures the healthiest quality

Almost everyone assumes that water from safe sources is free of health risks because it is clean and doesn’t spoil. However, overlooking details in water consumption can lead to contamination, quietly endangering health.

To understand how water spoils, we must first consider its sources. Daily drinking water generally comes in two forms: bottled purified water and self-boiled tap water.

Qualified purified water is strictly treated according to national safety standards for drinking water. As long as the transportation process is handled properly, all indicators remain达标. Homemade boiled water is typically brought to a boil, but few realize that water should continue boiling for three minutes after reaching boiling point to remove chlorides from tap water. After three minutes, the heat should be turned off, as prolonged boiling can increase nitrite levels in the water, which are harmful to health.

Whether it’s water for brewing tea or drinking, if left exposed to air for too long, it’s advisable to avoid consuming it for the sake of health.