This study focuses on water quality and crop growth monitoring of wastewater reuse for agriculture and analyzes the results of the monitoring. The study area of the 45 ha is monitored from 2006 and is located in Byeongjeom-Dong and Jinan-Dong, Hwaseong-Si. Water quality monitoring was conducted by analyzing the water quality index such as BOD, T-N, T-P (etc.) of irrigation water, ponding and outflow of the sampling paddy fields from the period of rice planting to final drainage of residual water. Results showed that SP#05 is highest in T-N and SP#02 in BOD. Especially, when observing the change of T-N and T-P concentration of each sampling point, T-N showed a 33%~67% effect in ponding water quality improvement and T-P was 19%~35% with the exception of SP#04. These results show that wastewater reuse for agriculture can help reduce the amount of fertilization. Crop growth monitoring was conducted by measuring the plant height of each sampling point and it shown no distinct tendency. There are many deferences in the yield of rice in the study area, especially between SP#03 and SP#04. The average rice yield of the study area made difference -40(kg/10a)~ +40(kg/10a) compared with Hwaseong average rice yield.