Although the locals had been using the water from the Petanjci spring, its value was first recognized by Professor Jožef Vogler, a biologist, teacher and politician from Szentlászló. Vogler's analysis revealed that the water is of very good quality, with high mineral and carbon dioxide content. Investing his own assets he established a company and in 1883 the bottled Petanjska slatina mineral water was launched. After his death in 1905, the company was taken over by his sons Ivan and Josip Vogler. He transferred it to his daughter and son-in-law, Jožef Toplak. Under their leadership, the company was booming. After 1945 the company was nationalized and incorporated into the Radenska company.