1. The Beginning

    The Beginning

    6000 BC

    The source of ROI is estimated to be 8000 years old. This unique geological configuration around Rogaška helps create the world’s most magnesium-rich mineral water.

  2. Celts & Romans

    Celts & Romans

    200 AD

    Archaeological remains, in addition to the Roman road which connected Celeia and Petovium provided evidence that both the Celts and the Romans had previously occupied or been made aware of Rogaška Slatina.

  3. The archives of the Parish Church

    The archives of the Parish Church

    1304

    The archives of the Parish Church of St. Cross in Rogaška, have presented historical data that indicates, Roitschocrene has contributed to individuals longer lifespan. Living for over 100 years.

  4. The first chemical analysis of ROI

    The first chemical analysis of ROI

    1572

    Leonhard Thurneysser (also known as Leonard Thurneisser Zum Thurn) carried out the first reported alchemical analysis of the water in 1572 and published it in his book Pison.

  5. THE MIRACLE OF PETAR ZRINSKI

    THE MIRACLE OF PETAR ZRINSKI

    1665

    In 1665, the Croatian Count Petar Zrinski was in Rogaska hunting. He has a disease called Jaundice and problems with his liver, so the locals recommended that he drink this rich mineral water. Legend has it that Count Zrinski drank water from the hollow trunk of a willow tree that was attached to the spring. After this, Count Zrinski miraculously healed and introduced the Rogaska water to the entire European royalty, fascinating physicians who immediately started exploring the health effects of ROI.

  6. ROI – THE DIVINE POTION

    ROI – THE DIVINE POTION

    1680

    Dr. Paul de Sorbait was the court physician, professor at the medical faculty in Vienna and a personal doctor of Emperor Leopold I and Empress Eleonor. In 1680, Dr. Sorbait published a book entitled Praxis Medicae, in which he described the water from Rogaska. He healed his patients very successfully with this water and achieved international glory. In his book Praxis Medicae, he described the amazing healing effects of this water and called this water “Gottertrank”, in English “The God Potion”. Doctors in Vienna started prescribing ROI to high-profile patients, thus ensuring its place in medical practice. There are many written records on how Dr. Sorbait healed his patients to full recovery, when no other medicine worked.

  7. ROI’S FIRST MONOGRAPH

    ROI’S FIRST MONOGRAPH

    1685

    In 1687, ROI got its first monograph entitled Roitschocrene, which was written by Joannes Benedict Gründel. Phi. & Medicinae Doctor, a member of the German academy Naturae Curiosum (one of three major scientific societies along with the Royal Society (London) and the Academy of Sciences (Paris), but it has the honour of being the oldest of the three; established in 1652). This was the only monograph about water in Europe at the time.

  8. WATER IS ALIVE

    WATER IS ALIVE

    1721

    Charles VI, Holy Roman Emperor, awarded a concession for the exploitation of the spring to the Vienna Pharmacists Association, which held it until 1782. During that period, the first technical intervention was completed. – the spring was walled in, taking on the appearance of a well.

  9. ROI’S SUPREMACY

    ROI’S SUPREMACY

    1774

    In the 18th Century, the price of a single bottle of ROI was 1 forint and 15 kreutzers or more. Because of this high price, bottles of counterfeit water started appearing on the market. Until the Austrian Empress Maria Theresa decreed in 1774 that every bottle of water from Rogaska must be marked with a label indicating the current year and including a symbol that was to be changed every year. Empress Maria Theresa also issued a decree stating that the price of the mineral water must be published in the Wiener Zeitung newspaper

  10. Official establishment of the Rogaska

    Official establishment of the Rogaska

    1803

    Official establishment of the Rogaska Spa Resort In 1803, the Rogaska Spa was managed by Count Ferdinand Attems. He bought the lands surrounding the springs from their previous owners and from that point on 1803 is known as the year of establishment of the spa resort

  11. world’s third bestselling water

    world’s third bestselling water

    1869

    Roitschocrene became the world’s third bestselling water bested only by the waters known as Vichy and Selters. Consumed globally, Roitschocrene distributor the Provincial health spa in Rogaska Slatina was awarded a medal of quality at the 1893 World’s Fair in Chicago.

  12. Spring Renovation

    Spring Renovation

    1908

    Spring Renovation

  13. Evolution

    Evolution

    2011

    The Evolution of Roitschocrene into ROI, brought about a new philosophy in both design and building on the legacy that has built the brand over hundreds of years. Embracing a new slogan: "The World's Most Magnesium-Rich Mineral Water".

  14. Recognition of ROI

    Recognition of ROI

    2016

    ROI was privileged to receive the esteemed Gold Award in recognition of bottle design and Bronze Award being on the top mineral waters, in regard to taste from the Fine Water Society.

  15. ADAPTING TO MODERN TIMES

    ADAPTING TO MODERN TIMES

    2017

    Launch of ROI to select countries, providing consumers with ROI right at their doorsteps. Changing the perception of water, that it isn't solely consumed to quench thirst, but a water with real value to one’s well-being.

The Source


Everything good comes from within. The unique geological configuration around Rogaška helps create the world’s most magnesium-rich mineral water.

ROI springs in the middle of Slovenia’s most tectonically diverse areas, featuring three regional faults. This unique geological and hydrogeological configuration is the invaluable source of two natural resources, springing from depths of approx. 300 metres. Dissolving through rocks rich in magnesium, calcium, sulphates, bicarbonates and assisted by natural gas, here springs the thermal water used for centuries at the Rogaška Health Spa, and the ROI mineral water, which is particularly rich in magnesium and other beneficial minerals.

The first written records date about Roitschocrene spring goes back to 1141.

Scientific research was conducted into the age of Rogaška ROI water, which was estimated to be some 8,000 years old.

ROI benefits from one of the highest mineral contents of any bottled water in the world, indicated by the TDS, the number of total dissolved solids. Its generous mineral contents brings a distinct, rich taste to the table. The elements are in harmonious balance and in soluble form, easily absorbable by your body. Your metabolism dissolves the minerals easily and quickly sends them to your cells, ready for action.

Royal Presence

  • House of Liechtenstein

    House of Liechtenstein

    Is royal family from Liechtenstein

  • House Bourbon

    House Bourbon

    Is a European royal house French origin

  • House of Hohenzollern

    House of Hohenzollern

    Is a noble family and royal dynasty of kings of Brandenburg, Prussia, Germany

  • House of Windisch-Graetz

    House of Windisch-Graetz

    Was a princely family in the Austrian Empire, serving the Habsburg dynasty

  • Rothschild Family

    Rothschild Family

    Is a family of German Jewish bankers and one of the richest and powerful families

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