Many toxic minerals are contained in water supplies, usually at high levels. Copper (Cu) Copper is an essential element for our health, but it is toxic at high concentration. Cadmium (Cd) Cadmium is a highly toxic heavy metal, considered carcinogen. Everyone knows that ocean water tastes salty. Most of these compounds are toxic and many have been found in water reservoirs. Lead (Pb) Lead is poisoning even in small amounts for microorganisms, interfering with haemoglobin formation and with the functionality of central nervous system. Arsenic (As) Arsenic can be toxic even in low amounts. Here you could have a rough idea of mineral water compositions. Not very much is known about the compound of phyto-pharmaceuctics, but metabolites can be much more toxic than water. They are also in cosmetics, anti freezing products, glues, colours. Zinc always contains a small amount of cadmium. The salt consumption in industrialized countries is considered much higher than the recommended levels (about 3.9 g/day on average). The daily sodium chlorine intake is 20 mg. Due to our diet very rich in salt it is recommended to drink water with a sodic content lower than 20 mg/l, particularly for ipertense people and children. Aluminium (Al) Aluminium is very abundant on the earth, but is not important for human nutrition. Sodium, potassium, calcium, Mineral water is water from a mineral spring that contains various minerals, such as salts and sulfur compounds. [1], The more calcium and magnesium ions that are dissolved in water, the harder it is said to be; water with few dissolved calcium and magnesium ions is described as being soft.[2]. Water can naturally contains small quantities of sulphates, but they are mostly transferred in water bodies from the atmosphere and in the atmosphere form road traffic, industries and energetic production. In contrast to these well-known mineral water brands, Thank You Silver has a mineral content of only 10 ppm. Hard water seems to bring to a lower asbestos loss compared to water poor in salts, which is much more corrosive. The mineral composition of tap water may contribute significant amounts of some minerals to dietary intake. Manganese (Mn) Food usually covers the recommended daily intake of 2-3 mg. An excessive concentration in water is not necessarily harmful, but originates the same problems as iron (unpleasant taste and colour). Aluminium can have toxic effects even in small quantities. Thirty-seven brands of domestic and imported mineral waters were analyzed for the following: alkalinity, aluminum, barium, beryllium, boron, cadmium, calcium, chloride, chromium, cobalt, copper, fluoride, iron, lead, lithium, magnesium, manganese, mercury, molybdenum, nickel, nitrate, pH, phosphate, potassium, silver, sodium, specific conductance, sulfate, tin, vanadium, and zinc. This pollution can happen through the contact of water with porous surfaces or synthetic materials that are an ideal media for microorganisms. Rain water, snow and ice are quite similar to distilled water. Today, it is far more common for mineral water to be bottled at the source for distributed consumption. The WHO recommend a concentration lower than 20 mg/l. Microbiological pollution Microorganisms include bacteria, virus and parasite. Drinking 2 liters of water containing 20 mg/l of sodium you reach 40 mg, that is about the 5% of the total intake. Surfactants Surfactants are the substances used in detergents to lower the surface tension of the water, allowing it to wet the clothes better. The recommended daily intake by EEC is 40 picog. The mercury released in the atmosphere is very light, so it can reach long distances from the source and fall again on the soil through rain, entering water bodies. Fluorine (F) In someone opinion fluorine is useful for the good health of bones and teeth, sometimes it is even essential, in others opinion it is unnecessary when you are adult, above all if it is added. That's less than 1% of some bottled water! The Italian law allows 30 mg/l of chlorine, while the guidelines of the European Directive indicate 1 mg/l and specify that the concentration should be as low as possible. Water forms form 50 to 60% in weight of our body and play an active role in all the vital processes of our body: it allows digestion, food elaboration and waste elimination. Mineral salts and oligoelements Calcium (Ca) Calcium is one of the most common elements on the earth. There is no evidence that the aluminium assumed through water is more soluble and then more easily digestible, than the aluminium contained in food. A daily intake of 1.2 mg is recommended. Most viruses are killed by chlorination, and anyway most of the viruses carried by water are too week to be harmful for humans.