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The study area located in the western part of the Eastern Pontides, NE Turkey, represents the eastern part of the metallogenic province of the Black Sea region. The soil, water, and some mosses from the area contain heavy metal pollution from the mines and tailings of the abandoned and partially active massive sulfide deposits and their host rocks. The surface/subsurface/underground ore bodies generally cause the acidification of groundwater and the enrichment of heavy and toxic trace metals (Cu, Zn, Cd, Fe, As, and Pb) in the water, soil, and mosses. The mosses are Rhabdoweisia crispata, Pohlia nutans, and Pohlia elongata. R. crispata is a newly reported plant in Turkey, and the abovementioned moss species are observed especially where the toxic element contents of the water and soil are enriched. The mosses are sensitive to the trace metals and thus accumulate metal ions, predominantly Fe, Al, and Mn, which are apparent in the interaction between the water and roots. R. crispata is a better accumulator of trace metals and some major elements than the other mosses. R. crispata is therefore suitable for use in the recovery of polluted soil and water affected by acid mine wastewater from active and/or abandoned mining sites in the NE of Turkey.