The water in Jiangbei is generally groundwater, which is a bit hard. The water in the south of the Yangtze River is a millstone landscape with good water quality. If you boil water in Jiangbei, the kettle will soon have scale, which is generally not found in Jiangnan.
2. Different sources:
Most of the water in the north is groundwater, which is still hard after boiling and will not become soft water.
Most of the water sources in the south come from rivers and small rivers.
3. Different pollution levels:
Compared with the south, the pollution turbidity of water sources in the north is lower.
In South China, the average turbidity of 78.6% of water sources is below 50NTU, 63.6% of water sources are seriously polluted by algae, and 57. 1% of water sources are slightly polluted.
Extended data:
How to drink water correctly:
The physiological requirement of drinking water every day is 3000ML. It is advisable to drink 100-200ML of water every time, and it should not exceed 100-200ml, otherwise it will be excessive.
Old people should be about 4/5 of adults. Men are more than women 10%- 15%. Because of growth and development, the metabolism of babies is more vigorous than that of adults, so they need more water. When they are not thirsty, they should add 100-500ml, which is more in line with the demand.
Water is the source of life. Water can beautify the skin, keep the skin tender, and has the effect of detoxification and beauty. Everyone should ensure at least 2000 ml of water every day.
It is not a good thing to drink plenty of water in moderation, and don't wait until you are thirsty. In addition, juice tea or milk can't replace boiled water, which is the best drink and our healthiest water.
Be sure to use warm water when drinking water, because the stimulation of ice water on the stomach is not conducive to absorption. Drinking natural carbonated water when you are tired can relieve fatigue.
Drink hard water when you are constipated, and the water can reach the colon as soon as possible to promote defecation. When coughing, you should also drink warm water to dilute sputum, which is beneficial to expectoration, increase urine volume and promote the excretion of harmful substances. Therefore, drinking water scientifically is very important.
Baidu encyclopedia-water quality