[The metal concentration in water and ground deposit in the area of Upper Silesia].

The metal concentration in water and ground deposits of 6 collapse water reservoirs in the area of Upper Silesia was tested. The examined reservoirs are situated in the so-called cross-town tract near Swietochłowice and Ruda Slaska. It was concluded that the metal concentration in water samples was low. In accordance with the present regulations, this allows to classify the water in these reservoirs to the 1st class purity water. The metal content in the ground deposits is high. Iron (Fe) concentration in the deposits ranged from 28288.9 mg/kg to 39162.9 mg/kg; the concentration of manganese (Mn) ranged from 2557.95 mg/kg to 3398.52 mg/kg and that of zinc (Zn) was 1288.78 mg/kg average through the year. The highest zinc concentration reached 2834.74 mg/kg. Cadmium (Cd) occurred in the deposits in the content of 10.4 mg/kg. The average year concentration of lead (Pb) in the deposits was 252.4 mg/kg. Copper (Cu) was found in the deposits in the amount of 45.0 mg/kg. The highest concentration of this metal in the ground deposits was 103.14 mg/kg. Magnesium (Mg) was on average present in the deposits in the concentration of 1913 mg/kg and its highest concentration reached 6777.89 mg/kg.