The end-point treatment of point pollution sources is the best way to improve the quality of water and prevent pollution, all over the world. Nevertheless, non-point pollution sources that influence the quality of surface water are serious concerns. Wetlands receive surface water inputs from streams, surface runoff, precipitation, and overland flow and subsurface water inputs from surface infiltration, stream hyporheic zones, and ground water. In this study water source includes effluent from livestock farms and domestic wastewater. By monitoring and analyzing the variations in the water quality, the removal efficiency in different ponds of the artificial wetland for various pollution sources can be obtained. Factor analysis and cluster analysis are adopted to describe the spatial characteristics of the data and seasonal variations in the water quality respectively.