A, what is residential water
Living water, refers to the water needed for human daily life. Including urban living water and rural living water. Urban water by residents and public **** water (including services, catering, freight, post and telecommunications and construction water), rural water in addition to residential water also includes livestock water. Hard water: water with a high content of calcium and magnesium ions, spring water, deep well water, seawater are hard water. When the water flows through the land and rocks, it will dissolve a small number of mineral components, calcium and magnesium are two of the most common components, they make the water hard. The more calcium, magnesium and other mineral components the water contains, the harder the water is. Long-term consumption can cause liver, gallbladder or kidney stones, etc.. Soft water: Water that does not contain or contains less soluble calcium and magnesium compounds is called soft water. Natural soft water generally refers to rain, snow water, rivers, streams, lakes are soft water. The softening treatment of hard water refers to calcium and magnesium salt content down to 1.0 ~ 50 mg / liter of softened water. We usually use the content of calcium and magnesium ions in water as "hardness" indicator to express. Hardness of 1 degree is equivalent to 10 mg of calcium oxide per liter of water. Water below 8 degrees is called soft water, above 17 degrees is called hard water, and between 8 and 17 degrees is called moderately hard water. Drinking water rich in calcium ions and magnesium ions in moderation is good for health, magnesium ions help the activation of the human body, magnesium ions also have the function of stabilizing neuromuscular conduction. Therefore, when the concentration of magnesium ions in the body is too low due to insufficient intake of magnesium ions, it is easy to produce arrhythmia and abnormal vascular contraction. A normal person must consume at least 350 mg of magnesium ions per day from food or water to maintain good health. Because the magnesium ions taken from food are easy to combine with the cellulose in food, and not easily absorbed by the body, so to increase the absorption of magnesium ions in the body, the most effective way is to take from drinking water. Calcium and magnesium ions are essential nutrients for the human body every day, and if the water has a certain hardness, a certain amount of calcium and magnesium ions can be supplemented by drinking water. If it is a person who takes soft water for a long time, it needs to be supplemented by other ways. But the water hardness is too high and too low are not good, because the water hardness and some diseases have a close relationship. In areas with high water hardness, the incidence of cardiovascular disease in the population is low, but the incidence of kidney stones with the increase in water hardness and increase. The southern part of China is mostly soft water, and the northern region is mostly hard water. China's drinking water standards are not more than 25 degrees, the most suitable drinking water hardness of 8-18 degrees, belonging to mild or moderate hard water. Hard and soft water and taste are also related to hard water, hard water is refreshing, most of the mineral water hardness is higher, so that people feel refreshing and delicious, soft water seems tasteless. But with hard water for tea, coffee, the taste will be affected. Some food processing water is more delicate, hard water will affect food processing, easy to cause protein precipitation, inorganic salt precipitation or more difficult to cook, and beverage water with soft water is better. Boiler water should generally make the hard water softening, otherwise there will be too much scale and accidents.Two, Guiyang City, how much money a ton of water
1, residential water: 2.80 yuan / cubic meter; 2, administrative water: 3.90 yuan / cubic meter; 3, industrial and commercial water: 4.10 yuan / cubic meter; 4, hotels, restaurants, catering, etc. water: 4.60 yuan / cubic meters; 5, bathing industry water:60 yuan / cubic meter; 6, car wash industry, pure water water:40 yuan / cubic meter; 7, agricultural compensation water:0.60 yuan / cubic meter. Sewage fee: 0.9 yuan / cubic meter for residential water, other users of water 1.50 yuan / cubic meter. Water: 1.00 yuan / cubic meter, temporary sewage charges In summary, residential water: 2.80 yuan / cubic meter; administrative water: 3.90 yuan / cubic meter; industrial and commercial water: 4.10 yuan / cubic meter; hotels, restaurants, catering and other water: 4.60 yuan / cubic meter;.