The brine from Zabłocie is subject to regular analyses since 1894.

The results of analyses indicate chemical stability of its composition since over one hundred years.
Slight variations in the content of individual ions and mineralization are something natural or may be associated with various test methods used by individual laboratories.
To trace the chemical composition of the brine since the first test in 1894 performed by E. Ludwig until the present time, the Table 5 below summarizes the analyses for a temporal interval of 117 years.
A -  analysis made by E. Ludwig,  

B  - analysis made by the Department of Scientific Research in Szczawno Zdrój, included in Papierkowski (1959) and Dowgiałło et al. (1969), (1969),

C  - analysis made by the BP "Balneoprojekt" laboratory in Szczawno Zdrój, included in hydrogeological documentation (1976)

D  - the analysis made by the BP "Balneoprojekt" laboratory in Szczawno Zdrój  

E  - analysis made by the laboratory of the Central Mining Institute. 

The brine is covered by the notification to the National System of Information on Cosmetics Placed on the Market,   run by the Institute of Occupational Medicine Prof. J. Nofer in Łódź at no. RK / 254759/2009 of September 17, 2009, as  cosmetic product  used in the form of an additive to the body bath, with the following functional properties:  "Removes fatigue, refreshes, smoothes, firms and tones the skin. It reduces hyperkeratosis of the epidermis and relieves stress ”.
Korona physico-chemical analysis →
Korona bacteriological tests →Physico-chemical analysis Tadeusz →
Bacteriological tests Tadeusz →

Concession and law

The spring is operated under license No. 12/2010 issued by the Ministry of Environment on 18. 08. 2010 for a period of 20 years. The company has the right to exploit the brine through the Korona drillhole within the mining area, which has the form of a square with the side of the 1000 m and covers the area from the border of land to the bottom of the Miocene layer within the Skawina and Dębowiec formation. The reserves of medicinal water have been documented in "Appendix No. 1 to the geological documentation establishing the medicinal groundwater resources from "Tadeusz" and "Korona" drillholes in Zabłocie on updating the exploitable resources of medicinal waters obtained from "Korona" drillhole, adopted by the letter sign. DGiKGkdh 4791 31-2/6722/1681/09/M dated 10. 04. 2009, constituting the update to the "Geological documentation establishing the medicinal groundwater resources in Zabłocie" of 1976". Contractor: Office of Design and Technical Services for Balneotherapy Industry "Balneoprojekt" Warsaw, ul. Rolna 179/181 and approved by the President of CUG dated 09. 12. 1977, sign. KDH/013/4244/B/77.

"Korona" drillhole drilled in 1892 and used extensively to mid-80s of the twentieth century, is located in Zabłocie, at Bielska street within dispersed rural housing area provided for use in the exploitation of brine using the drillhole. For the project, an analysis of environmental conditions was performed and no need to conduct an environmental impact assessment of this project was found. The project site is located in the western part of the Carpathian foredeep in the south, not fitted out by the coal mining part of the Upper Silesian Coal Basin. The project is located in the area of ​​special protection of bird habitat Natura 2000 PLB240001 Upper Vistula Valley, on the north-western edge of the area.
Concession (PDF) Map →

State Hygiene Institute

The National Institute of Public Health - National Institute of Hygiene issued an "Assessment of the properties of groundwater from the" Korona "borehole in Zabłocie for brine, in terms of its use for therapeutic purposes or production of preventive and health measures" No. HU / 51/2010 of 19.05.2011. which stated that brine in its natural state, after filtering out the precipitating ingredients, can be used for therapeutic baths or, after appropriate dilution (according to medical indications), also for inhalation or bathing for rehabilitation purposes. In addition, after proper dilution with spring water or natural low-mineralized mineral water, the brine can be used for  production of an agent used to supplement iodine deficiency in the human body. 
State Institute of Hygiene - assessment (pdf) →   

Publications and certificates

The brine deposit located in Zabłocie in the Strumień commune has been exploited since it was opened with the Korona borehole in 1892. The brine was used from the turn of the 19th and 20th centuries for therapeutic (bathing and inhalation) purposes, initially under the name "Zablaczer Kronenjodwasser".

The mining plant captures the relict waters of the warm Miocene sea, lying at a great depth: 300 - 650 m below sea level, constituting a kind of preserved algae extract and currently a deposit of healing water - iodide, chloride-sodium, rich in minerals necessary for health - iodine, calcium, magnesium and iron as well as valuable micronutrients: silicon, strontium and boron. It is typical groundwater of deep geological levels, isolated from the surface. The water has a therapeutic, very high content of iodine - 135 mg / l on average, 139 mg / l and iron approx. 10 mg / l.
Brine from the "Korona" drillhole in Zabłocie is used as a raw material for cosmetics and balneological products. 
History of Zabłocie→
Solanka z Zabłocia sp. z o.o.

NIP: 633-212-84-66
KRS: 0000360742
REGON: 240168720
SHARE CAPITAL: 80.000,00 zł
Bank account number:
PKO BP 42 1020 2472 0000 6102 0194 8322
Company headquarters and place of extraction:

ul. Bielska 8
Telephone and email

Bogusław Goik
Chairman of the Board
Krzysztof Lipiński 
Vice-President of the Management Board for Trade and Development
Ryszard Ślaski 
Vice-President of the Management Board for Mining and Geological Affairs
Mirosław Wardas
Head of the Warehousing Department
Grzegorz Osica
Logistics Department Manager
Mirosław Wardas
Head of the Logistics and Warehousing Department