The present investigation work " determination of the efficiency of the ~"•T•"• wetland for the of waste water treatment in the Ravine of the Sector Uchuglla crossing, of Moyobamba city" it aims to contribute to the investigation concerning the wetlands system as an alternativa treatment for wastewater and to improve environmental quality. In this way was chosen to carry out the present study of domestic wastewater discharged of the houses surrounding the ravine of the Crossing of Uchuglla sector located in the district of Moyobamba. In order to meet the proposed objectives was the construction of a treatment plant of domestic wastewater with a treatment of artificial wetlands. The evaluation of the artificial wetland with Arundo don~ (Brave cane), was made by three consecutiva months with a Q =3 m3/d belonging to the surrounding houses of crossing Uchuglla sector were obtained as ...