The Kozi Brod (left tributary of the Biala Przemsza, east of Katowice) flows in a highly industrial coal-mining area dominated by the power plant of Siersza. Concentrations of the microelements nickel (Ni), chromium (Cr), cobalt (Co), zinc (Zn), manganese (Mn), lead (Pb), cadmium (Cd), copper (Cu), barium (Ba), aluminum (Al), vanadium (V), and strontium (Sr), as well as the macronutrients nitrogen (N), phosphorus (P), potassium (K), calcium (Ca), magnesium (Mg), iron (Fe), and sulfur (S), were measured in water and plants of the Kozi Brod. The collected plants were:Myosotis palustrisL. Nathorst,Galium palustreL.,Mentha rotundifoliaL. Huds.,Mentha aquaticaL.,Berula erecta(Huds.) Coville,Cardamine amaraL.,Epilobium angustifoliumL.,Geranium palustreL.,Lysimachia vulgarisL.,Crepis paludosaL. Much.,Calitriche vernaL.,Solanum dulcamaraL., and the aquatic mossHygrohypnum ochraceum(Turn.) Loesk. These plants were used to evaluate the spatial distribution of elements in the Kozi Brod and contained elevated levels of Co, Cd, Zn, Ni, Mn, Al, Pb, and Cu. Significant correlations between concentrations of Cd, Zn, and Mn in water and plants indicate the potential of these species for pollution monitoring.