The regional and local monitoring of underground waters as well as general water resource balance studies have encompassed only individual springs in some Polish national parks. This report presents the results of cluster analysis derived from the chemical analyses of spring waters collected in Świętokrzyski (Holy Cross Mountains) National Park in 2004 and 2006. The cluster analysis technique enabled me to obtain information about similarities or differences between sampling sites. This technique also indicated that the division of waters only on the basis of their quality and chemistry was not fully substantiated and required further study.