In the Mszanka catchment area, similar fluctuations in N-NH4+ were observed for grassy and arable land. The lowest fluctuations in N-NO2- and N-NO3- were observed for forests. The P-PO43- concentrations were highest in permanent grassland. In addition, the highest TSS concentration in water streams ranged between 5.43–25.35 mg·dm-3 in the arable land (Table 2).