This study evaluates the use  of free floating aquatic macrophytes (Lemna gibba L., Lemnaceae. and Pistia stratiotes L., Araceae) for the treatment and purification  of waste polluted water in a laboratory experiment. The results revealed that Lemna gibba L. has a higher removal efficiency reached to about 88 % for the tested heavy metals and phenol from the waste polluted water, while Pistia stratiotes L. has a removal efficiency reached to about 83% for heavy metals and phenol. They are considered good models in assessing Eco- toxicity and efficiency for toxins removal from polluted environment and wastewater purification and treatment.