Domestic wastewater, if not correctly disposed of, is a cause of pollution for water-based bodies. The reed bed system is a sort of phytoremediation method used to remove toxins from the environment. This system has a high potential for application in the treatment of household wastewater (WW) because it has good performance as a whole, low operating and maintenance costs, and is not harmful to the environment. This research aimed to study characteristics variation of Grdarasha area WW (located in the left side of Erbil-Kirkuk main road) before and after reed beds. The reed bed system was proven to have a good efficiency in removing Chemical Oxygen Demand (COD) (15. 91-71. 07) %, Total Solid (TS) (8.33-50) %, Total volatile Solid (TVS) (18.8-50) %, and chloride (2.5 – 82.98%). In furtherance of transferring oxygen from the environment, the interplay between pollutant-plants-medium-microbes is critical in pollutant removal utilizing the reed bed technique.