Municipal tap water goes through all kinds of water pipe before reaching consumer’s house. The majority of municipal tap water pipes are used for many years and made of all kinds different materials and textures because of history reasons. Water pipe could release different amount harmful heavy metal to drinking water, such as plumbum, copper, quicksilver and so on. It will do all kinds of harm to human body if drinking the water that contains heavy metal for a long time. For example, to a great extent, plumbum can influence children’s intelligence development.

(1) Do not contain any poisonous harmful smelly materials(heavy metal and organic substances,

(2) The proportion of  mineral substances and microelement in the water is appropriate,

(3) The water PH value is 6.5-8.5,

(4) Water cluster half-amplitude duration is less than 100Hz, and water cluster is small,

(5) Water hardness is about 300(as calcarea carbonica,

(6)Dissolved oxygen is less than 7 milliliters per one liter water and carbon dioxide is moderate,

(7) The health maintenance function(dissolving capacity, osmotic force, diffusive force, emulsifying ability, clearing power)is strong.

(1) Fixed suspension: silt, rust, the thing that can look by eyes;

(2) Microorganism: bacteria, poison, alga and so on;

(3) Dissolved inorganic: lime carbonate, magnesium carbonate, bluestone, chloride, nitrate.

(4) Heavy metal: quicksilver, arsenic, lead, cadmium, chrome and so on;

       (5) Organics: pesticides, chemical fertilizer, all kinds of industrial solubilizer, dye, cleanser, disinfector, antibiotic, hormone and so on.

For survival and activity, human body needs seven categories nutrient: water, protein, fat, carbohydrate, mineral, vitamin, cellulose. Water ranks the first, top of the list. Water is the special nutrient which is very important. Water not only is the important structural substance, but also plays a fairly eminent function. It is the best dissolution medium and exchanging medium for everything. Anyway, water is the basics of all the life activities.