The current study was aimed to investigate three freshwater hydrophytes such as Common Duckweed (Lemnoideae), Water Lettuce (Pistia stratoites) and Coontail (Ceratophyllum demersum) for the treatment of sewage wastewater of Shiekh Maltoon Town, Mardan, Khyber Pakhtunkhwa, Pakistan. All experimental work was done in open containers containing sewage wastewater. The results show that all species have the capability to remove pollutants from sewage wastewater. The removal tendency of these species was in order of Common Duckweed (Lemnoideae) > Water Lettuce (Pistia stratoites) > Coontail (Ceratophyllum demersum). The removal efficiency of these species was checked for specific pollutants. The removal efficiency was reported greater in the initial days of the experiment and efficiency decreased with the passage of time. Statistical analysis revealed that the amount of pollutants in aqueous solutions were reduced significantly (P ≤ 0.01) by Common Duckweed (Lemnoideae), Water Lettuce (Pistia stratoites) and Coontail (Ceratophyllum demersum).
