Having no biologically active components in its composition and having perfectly balanced cations and anions content which form the chemical composition of all varieties of groundwater (respectively, positive ions - calcium, magnesium, sodium, potassium and negative - bicarbonates, sulfates, chlorides) «Pistynska Dzherelna» (Pistyn' Spring Water) has positive influence on the physiological state of human, improves the bowel movement, metabolism, and also helps to eliminate salts, sand and stones from the body.

Calcium is considered the main, most valuable component of high quality natural table water, to which the water of the Shturbak source belongs. Its content should be from 30 to 200 mg/dm³ (the optimal composition is 100 mg / dm³, which fully coincides with its content in the source). It is the calcium that determines the growth of babies and full-fledged vital activity of a healthy organism. Calcium deficiency causes such a well-known disease as rickets. The low content of calcium and magnesium in water has a particularly negative effect on the human body, leading to cardiovascular diseases. According to the scientists mortality from cardiovascular diseases with the consumption of solid water (i.e., with a high content of calcium and magnesium) is significantly lower than with the use of soft water (the minimum amount of calcium and magnesium or high sodium content). Moreover, in the areas where people use hard water, the parameters of the cardiovascular system are better: lower total blood pressure, lower frequency of contractions of the heart at rest, and low blood cholesterol.

The level of Calcium in the cell is a universal factor in the regulation of all cellular functions, regardless of the type of cells. An insufficient amount of calcium in water affects the increase of heavy metals absorption and its toxic influence (cadmium, lead, mercury, aluminum, etc.). Heavy metals compete with calcium in the cell because they use its metabolic pathways to enter the body and replace calcium ions in important regulatory blocks, thus blocking their normal functioning. Now it can be argued that soft drinking water with a low content of calcium and magnesium is a significant environmental risk factor for cardiovascular pathologies and other common calcium-magnesium regional diseases.

The second place after Calcium in the source water is Magnesium. Magnesium reduces cholesterol in the blood, affects the irritation of the nervous system, prevents the occurrence of kidney stones and normalizes muscle activity. Its lack causes the disease of myocardial infarction - a very common ailment of our troubled time. Overwork and irritation, our frequent companions, also depend on the magnesium content in the body. In the blood of tired people calcium concentration falls below normal. The same thing happens when we get nervous and annoyed. It is not accidental that excited people constantly suffer from cardiovascular diseases. Magnesium along with calcium is vital for our skeleton formation. The optimal magnesium content in high quality drinking table water is 1:2 - 1:3 of calcium content, but not more than 30 mg/dm³. In the «Pistynska Dzherelna» spring water it is within these limits.

The effect of Sodium on the physiological state of a person is ambiguous. After Calcium and Magnesium, it ranks third among the main components of fresh table water. Sodium is an indispensable element of the human body. It is one of the components of the blood plasma. It plays an important role in pressure maintaining and a constant volume of fluid in the body, contributes to the swelling of colloidal tissue, which retains water. Sodium is a vital intercellular and intracellular element involved in the transportation of amino acids, sugar, potassium and calcium into the cell. Sodium ions are extremely necessary for the nervous system functioning. They are involved in the formation of electrical potential on the membrane of nerve fibers and in the conduction of nerve impulses. At the same time, according to the scientists, an excess of sodium in the human body leads to vasoconstriction, which leads to the occurrence of hypertension. Almost half of the adult population of our country, who add salt to their food, suffer from arterial hypertension, which is the main risk factor for coronary heart disease, myocardial infarction and stroke (57.7% of deaths are due to these diseases). In addition, the high content of sodium influences the violation of the sodium-potassium balance, which is also undesirable. Sodium draws water from the cells into the extracellular space, thereby blocking their vital activity, slows down metabolic processes, complicates excretion of toxins from the body. Therefore, the optimum sodium content in high quality drinking table water should be within 10 mg / dm³. Sodium in the «Pistynska Dzherelna» spring water is within these limits. This is especially good for children and pregnant women, protecting them from the additional burden on the kidneys.

In the first place among anions in the mineral water are hydrocarbons - one of the most important quality indicators that form the composition of water. The presence of bicarbonates contributes to the maintenance of acid-base balance, better absorption of water, stimulates the secretory ability of the stomach and, of course, affects the taste of water and its mineralization. The content of hydrocarbons is not limited, but in natural table waters of high quality they are in relation to calcium as 1/3, similarly in our water.

Sulfates rank second among anions. This is a necessary element of the human body, but their content in drinking water is limited. Sulfates have a positive effect on the work of the stomach, but at the same time their high content when interacting with magnesium and sodium irritates the gall-intestinal tract and adversely affects the taste of water. In good drinking table waters, the content of Sulfates should not exceed 80 mg/dm³, in high-quality drinking waters - up to 50 mg/dm³, in this source it is 20-35 mg/dm³.

Chlorine is an undesirable component of drinking table water. Like sulfates, chlorides can adversely affect the taste of water, so in good water the chloride content is within 10-100 mg/dm³, in natural table water of high quality - up to 50 mg/dm³, it is similar in the «Pistynska Dzherelna» spring water

The above characteristics of the main components of the «Pistynska Dzherelna» spring water composition indicate their optimal level and compliance with natural waters of high quality. According to the conclusion of UkrNDI MRiK and on ​​the basis of a detailed study of the quantitative and qualitative indicators of spring water it agrees with the requirements of Ukrainian standards of drinking mineral waters DSTU 878-93

Having the optimum content of the main components, «Pistynska Dzherelna» fully meets all quality standards and can be used for everyday use not only to quench thirst, but also to restore natural water losses or body-related losses. «Pistynska Dzherelna» will not cause any changes in the functional systems of the body, on the contrary , it will maintain the constancy of the internal environment of the body (homeostasis). Definitely this is the main physiological requirement regarding the use of high-quality drinking table water, which, without any doubt, is the spring water of the village Pistyn. The chemical composition, physical and sanitary-bacteriological indicators of the «Pistynska Dzherelna» water are favorable for the human body (taking into account the optimal range of the main macro-components and mineralization) and meet all the requirements of the official water quality documents. In addition, what is especially important, the «Pistynska Dzherelna» spring water does not require any auxiliary methods of water treatment (chemical preparation), as a result it preserves its energy and taste qualities.

Water quality is confirmed by conclusions based on the annual research conducted by the Ukrainian Scientific-Research Institute of Medical Rehabilitation and Balneology (Odessa).

Constant samples taking and examination of already PET bottled water by specialists of Kosiv District Sanitary and Epidemiological Station allow us to conclude that water from the Pistyn spring bottled by Tyrlych LTD is of high quality and meets the established standards.

Specialists of the Ivano-Frankivsk Research and Production Center of Standardization, Metrology and Certification examinated Pistynska Dzherelna water for the presence of GMOs. According to the results of the tests GMO was not detected.

The annual mandatory certification that Pistynska Dzherelna water undergoes in the bodies of state standardization and certification is a proof that Pistynska Dzherelna water produced by Tyrlych LTD is of high quality.