A genus of nine to 11 species, Wolffia globosa (L.) is the smallest of the world's flowering flora. These aquatic plants usually refer to as watermeal or 'duckweed' is similar to cornmeal spots which float on the water. Wolffia species are thalli, green or yellow leaf free-floating and rootedless. The aquatic plant Wolffia globosa (L.) was grown for phytoremediation treatment in range 0 (control), 20, 40, 60, 80 and 100% waste water. Fresh matter yield and dry matter yield of 7, 15 and 21 days growth of Wolffia globosa (L.) showed maximum value at 40% level of waste water. Chlorophyll content of 7 days growth of Wolffia globosa (L.) was found maximum at 40% level while 20% level of waste water showed maximum chlorophyll content of 15- and 21-days growth of Wolffia globosa (L.) plant. Maximum ascorbic acid content and catalase activity was recorded at 40% level of waste water in 7 and 15 days and 20% level of waste water in 21 days growth of Wolffia globosa (L.) plant.