A study was undertaken to determine experimentally the uptake of pollutants into of the different parts of the water hyacinth
(Eichhornia crassipes) found in “José Antonio Alzate” dam in the State of México, México. There is evidence for efficient and significant root
accumulation of Ti, Mn, Fe, and Ba; but in the upper parts concentrations was consistently determined by the degree of watering.
However, a significant input could by derived from a common generic source, such as the atmospheric deposition. The experimental
study would, therefore, indicate that water hyacinth species can be highly effective in providing a control and treatment
buffer for toxic discharges to the dam.