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

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

Boiled water has a shelf life of only 16 hours when exposed to air; expired water contains excessive levels of E. coli. For healthy individuals, long-term consumption of bacteria-laden water has a gradual, cumulative impact on health, with effects becoming more apparent over time.

Water quality experts explain that drinking stale water over time is akin to consuming food with additives regularly. Neglecting small details in daily water consumption can erode the body's internal health environment, potentially leading to deteriorating physical condition.

Therefore, when experiencing fatigue or weakened immunity, while paying attention to dietary hygiene, it's essential to examine whether your drinking habits are correct. Don't let your health be compromised by a daily glass of water.

Water—boiling for three minutes ensures optimal quality

Almost everyone assumes that water from safe sources is free of health risks because it is clean and non-perishable. However, overlooking details in water consumption can lead to contamination, silently endangering health.

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

Certified purified water is strictly treated according to national safety standards and remains safe if transported properly. Homemade boiled water is typically brought to a boil, but few realize it should continue boiling for three minutes to remove chlorides from tap water. After three minutes, the heat should be turned off, as prolonged boiling increases nitrite levels, which are harmful to health.

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