A group of students from the Department of Chemical Engineering visited the Central Laboratory of Water Analysis in Aseer Region in Abha on Tuesday 20/02/1440 Within the framework of the program, field visits are conducted for each semester under the supervision of Dr. Atef El Jery and Dr. Mudassir Hasan. The aim of this visit is to identify the uses processes in analyze drinking water and sanitation. This central laboratory is considered one of the most important laboratories in the Saudi Arabia for its services to the residents of the region through careful monitoring and testing of water samples for customers on a continuous basis. In order to ensure the access of high quality drinking water to customers, and on the other hand to control the sewage and protect the community from bacterial diseases. The supervisors of the laboratory said that the central laboratory in Aseer region supervises water quality and follow-up operations in all cities and governorates of the region, in addition to monitoring the various operating systems in it. He pointed out that the main sources of water and operational reservoirs and sources of water distribution, or points and sewage stations. Where pollution cases are directly found and the control of the sewage lines received at the treatment plants. The students were briefed on the components of the laboratory and the devices used and the method of water analysis in the this region, such as the method of color spectroscopy and methods of physical, chemical and biological tests and the most important indicators to judge the quality of water. At the end of the visit, the accompanying doctors expressed their thanks and gratitude to the engineers who are supervising the station for useful and valuable information that promotes the scientific method and the integration of the educational process.