These days, drinking water is not easy either.
Thousands of boiling water, yin and yang water… All kinds of urban legends are sensational. Drinking fountains, water purifiers… Safety also makes people uneasy.
There are too many rumors, so it is better to take advantage of today to catch them all.
Can’t you drink thousands of boiling water?
You must have heard that [water boiled repeatedly cannot be drunk].
This so-called [thousands of boiling water] has been charged with [nitrite exceeding the standard] [carcinogenesis] [causing lack of oxygen in the body].
Indeed, tap water contains nitrate, and repeated boiling will also cause some nitrate to be converted into nitrite due to high temperature and lack of oxygen.
But! Talking about toxicity without dose is all hooliganism!
Determination from laboratory:
The nitrite content in tap water was 0.007 mg/L
After boiling once, the nitrite content was 0.021 mg/L
After 20 times of boiling, the nitrite content was 0.038 mg/L
After boiling for many times, the nitrite content in tap water is still far lower than the national standard for drinking water (≤ 1 mg/L), so there is no need to worry about [nitrite poisoning] [carcinogenesis].
For those who will pour out the water when boiling for the second time, how dare you drink all kinds of old fire soup?
[Yin and Yang Water] Is It Good or Not?
The mysterious [Yin and Yang water] in legend is actually a mixture of tap water, well water, river water and other raw water with hot water.
As tap water in our country does not meet the standard of direct drinking water, the water in the natural environment may contain harmful microorganisms. Drinking directly or mixing such cold water into hot water may [disease comes from the mouth].
However, if it is to mix hot water with cooled boiled water, bottled water and bottled water, it is actually to mix water of different temperatures together, and there is nothing wrong with it.
Boiling water scalds your mouth and does not add some cold water. Do you have to wait until it is naturally cooled before drinking?
There are various statements about yin and yang water on the Internet, some saying that they drank spleen deficiency and cold palace, and some saying that they drank detoxification and beauty care. In fact, there is no basis for it. It’s just nonsense.
As long as the water source itself is sanitary and safe, drink cold water, hot water and mixed water with confidence and boldness.
Pure water is harmful to health?
Pure water lacks trace elements. Long-term drinking will lead to nutritional deficiency and damage health.
Such remarks are common in the circle of friends and many advertisements for aquatic products.
Yes, there are almost no minerals in pure water.
However, drinking water is only to meet the body’s need for water. The three meals we eat a day are the main way to get these nutrients.
Even if you drink 2 L (about 4 bottles) of mineral water every day, you will only drink 4 mg/L * 2L = 8 mg of calcium, accounting for 1% of the recommended daily calcium intake (800 mg), which is not as much as the calcium in a mouthful of milk.
It is really meaningless to drink water to supplement minerals.
Drinking water is just to supplement water, and the most important thing is safety. Qualified mineral water, mineral water and plain boiled water are no problem. What is convenient (cheap) which one to choose.
Is the water in the water dispenser sanitary?
Most drinking fountains use bottled water, which is not essentially different from the purified water and mineral water we usually drink, but the containers are different. As long as it is a qualified product, it is safe.
However, water is safe, so drinking fountains are not necessarily the case.
Bacteria may breed during the use of drinking fountains. If it is not cleaned for a long time, there will be safety risks.
This is not an armchair strategist. There are really many poisoning incidents caused by unclean drinking fountains in our country. Acute gastroenteritis is no joke.
Very important: clean the water dispenser every 1 ~ 2 months!
As for the specific cleaning methods, they are usually attached to the instructions of drinking fountains. Different drinking fountains have different methods.
For the sake of your own life and health, it is better to clean regularly and obediently.
Is it necessary to buy a water purifier?
Frankly speaking, there is no standard answer to this question.
First of all, it is by no means a necessity in the mouth of water purifier salesmen. Tap water has national standards, which ensure that boiled tap water is safe.
However, with the improvement of living standards, people will still pursue [higher quality] water. Water purifier is to make [qualified tap water] [better].
This [better] refers to removing [impurities] other than water molecules in the water to make the water purer.
As for whether to buy it or not, it depends on your needs and financial resources.
- If you have high requirements for the taste of water, the water purifier will be helpful. If you are worried about the scale caused by hard water, you can try a water softener or a water purifier with [softening water] function.
If you buy it, you must maintain it as required, especially replace the filter element regularly, otherwise it is likely to breed bacteria, but it is even more unsafe.