There is a sampling of water from springs in Montseny, grouped into three geographical areas. The aim is to describe the chemical properties of water from these springs using the main laboratory techniques. The comparative analysis allows demonstrating that in Montseny the global mineralization of the water from the sources is low to the north and east, and average in the springs of the West. The altitude of the spring can indicate the degree of mineralization, especially in the north and east, but it is less affect in West. The majority ions are bicarbonate and calcium.