Mohamed Gad received the B.Sc. degree in Tanta University, Egypt in 1999, and received the M.Sc. degree in Minufiya University, Egypt in 2005. He received the Ph.D. degree in University of Sadat City, Egypt in 2012. He is an associate professor of Hydrogeology in Environmental Studies and Research Institute, University of Sadat City, Egypt. He is also a senior hydrogeologist, scientist, certified hydrogeology consultant and technical project manager. Most of my recent project works were devoted to supporting client compliance with the water quality monitoring and management in Egypt, KSA, Algeria, Tunisia, and Yemen. He is now a consultant and works in Environmental Horizons Co., Riyadh, Saudi Arabia. His research interests include hydrogeology, hydrogeochemistry, geochemical modeling, water quality, water pollution, groundwater, surface water, and environmental sciences.