Can repeatedly boiled water be drunk? Netizens: So we were fooled for all these years

After water is repeatedly boiled, the nitrite content increases, and nitrite may be carcinogenic and harmful to the body. So can this repeatedly boiled "thousand-boiled water" actually be drunk?

Researchers did an experiment in which they measured the nitrite content in raw water, water boiled once, and water boiled 5 times. The results showed that after tap water meeting the standard was repeatedly boiled, no nitrite was detected.

After repeatedly heating with a water dispenser more than 180 times, an increase in the content of nitrite ions in the water was detected, at 3.52 micrograms per liter. In qualified ham sausages, the nitrite content does not exceed 30000 micrograms per kilogram. Compared in this way, this tiny amount of nitrite in "thousand-boiled water" can be ignored.

It is worth reminding that after boiled water is kept in a thermos for 5 days, the nitrite content will indeed increase due to the action of bacteria, so boiled water should be drunk as soon as possible after boiling, and should not be stored for a long time! In short, "thousand-boiled water" can be drunk, but do not drink boiled water that has been stored for too long.