Using UV technology, AquaPod Light and AquaPod case emergency instrument can monitor some normal and micro pollutants water quality parameters. As a good practicability technology, it can give alarm when some unknown pollutants are found. There are 17 pollutants monitoring models were built for the Pearl River Basin, and a real-time monitoring station was constructed in the water source of Zhuhai City. This system can monitor COD, TOC and nitrate. The conclusion indicates that the data deviation between the emergency and laboratory instru - ment have good uniformity.