YX-WQMS can be used for monitoring the quality of surface water and ground water in real-time and remote fashions, with monitored scope covering the rivers, lakes, drinking water sources, discharge outlets of sewage treatment plants and civil-purpose water. The five routine monitored factors are water temperature, PH value, dissolved oxygen, conductivity and turbidness. When configured with other systems, it can monitor the following items: permanganate index, TOC, ammonia nitrogen, total nitrogen, total phosphorous, etc.