Prof. Peiyue Li is a full professor in the field of hydrogeology and environmental sciences at Chang’an University, China, where he serves as the Vice Dean of School of Water and Environment. He has wide experience in groundwater quality assessment, hydrogeochemistry, and groundwater modeling. He has led over 30 research projects, edited and co-edited over 10 textbooks and academic monographs, and published over 200 articles in refereed journals on topics that range from groundwater quality assessment and groundwater hydrochemistry to groundwater pumping tests and in situ tracer tests. He at present serves as Associate Editors for Exposure and Health, Mine Water and the Environment, Archives of Environmental Contamination and Toxicology, Environmental Monitoring and Assessment, Human and Ecological Risk Assessment, Applied Water Science, Water Practice and Technology, and Discover Water. He has been awarded one of the most highly cited researchers by Clarivate, Elsevier, and other organizations. He has also been given several national/provincial talent titles and awards for recognizing his achievements in research and teaching. Prof. Vetrimurugan Elumalai is an established Hydrogeologist expertise in contaminant hydrology and groundwater modelling. He is excelling as an established researcher and mentor and Head of the department of Hydrology, University of Zululand, South Africa. He is South African National Chair of Hydrology (SARChI-Tier 1). His project experience covers groundwater resource investigation and development, groundwater characterization, contaminant hydrogeology and urban development, surface water groundwater interactions, remote sensing, and GIS application in Water Resource Management. He has published about 80 research papers in reputed journals. He is registered scientist with SACNASP. He is a life member of International Association of Hydrological Science, International Association of Hydrogeologists, International Association of Hydrological Sciences and Geological Survey of South Africa. Dr. Jianhua Wu is a Full Professor at Chang'an University in China, specializing in hydrology and water resources in arid areas, loess seepage and its disaster mechanisms, and groundwater environmental protection. She has led over ten research projects, and has been awarded more than ten research prizes. Her research output includes over 80 academic papers published in international journals, with 16 of them recognized as highly cited and popular papers by Essential Science Indicators. She is an associate editor for the international journal Exposure and Health. Dr. Wu's research excellence has garnered recognition from prestigious organizations such as Clarivate and Elsevier, who have selected her as one of the most highly cited researchers in the world.Dr. Xiaodong He is an assistant professor specializing in the field of hydrogeology and environmental sciences at Chang’an University, China. He holds a Ph.D. in hydraulic engineering from Chang’an University and possesses extensive expertise in hydrogeochemistry, water-rock interaction, water ecology, and water security. Dr. He has published over 20 scientific papers in renowned international journals, focusing on groundwater quality and groundwater pollution. Notably, 12 of his papers have been recognized as ESI top 1% highly cited papers. In recognition of his research excellence, he was selected as one of the Top 2% Top Scientists Worldwide by Stanford University in 2022.

• Introduction to contemporary water science.- Fundamentals of Water Science.- Water Quality and Treatment.

Prof. Peiyue Li is a full professor in the field of hydrogeology and environmental sciences at Chang’an University, China, where he serves as the Vice Dean of School of Water and Environment. He has wide experience in groundwater quality assessment, hydrogeochemistry, and groundwater modeling. He has led over 30 research projects, edited and co-edited over 10 textbooks and academic monographs, and published over 200 articles in refereed journals on topics that range from groundwater quality assessment and groundwater hydrochemistry to groundwater pumping tests and in situ tracer tests. He at present serves as Associate Editors for Exposure and Health, Mine Water and the Environment, Archives of Environmental Contamination and Toxicology, Environmental Monitoring and Assessment, Human and Ecological Risk Assessment, Applied Water Science, Water Practice and Technology, and Discover Water. He has been awarded one of the most highly cited researchers by Clarivate, Elsevier, and other organizations. He has also been given several national/provincial talent titles and awards for recognizing his achievements in research and teaching. Prof. Vetrimurugan Elumalai is an established Hydrogeologist expertise in contaminant hydrology and groundwater modelling. He is excelling as an established researcher and mentor and Head of the department of Hydrology, University of Zululand, South Africa. He is South African National Chair of Hydrology (SARChI-Tier 1). His project experience covers groundwater resource investigation and development, groundwater characterization, contaminant hydrogeology and urban development, surface water groundwater interactions, remote sensing, and GIS application in Water Resource Management. He has published about 80 research papers in reputed journals. He is registered scientist with SACNASP. He is a life member of International Association of Hydrological Science, International Association of Hydrogeologists, International Association of Hydrological Sciences and Geological Survey of South Africa. Dr. Jianhua Wu is a Full Professor at Chang'an University in China, specializing in hydrology and water resources in arid areas, loess seepage and its disaster mechanisms, and groundwater environmental protection. She has led over ten research projects, and has been awarded more than ten research prizes. Her research output includes over 80 academic papers published in international journals, with 16 of them recognized as highly cited and popular papers by Essential Science Indicators. She is an associate editor for the international journal Exposure and Health. Dr. Wu's research excellence has garnered recognition from prestigious organizations such as Clarivate and Elsevier, who have selected her as one of the most highly cited researchers in the world.Dr. Xiaodong He is an assistant professor specializing in the field of hydrogeology and environmental sciences at Chang’an University, China. He holds a Ph.D. in hydraulic engineering from Chang’an University and possesses extensive expertise in hydrogeochemistry, water-rock interaction, water ecology, and water security. Dr. He has published over 20 scientific papers in renowned international journals, focusing on groundwater quality and groundwater pollution. Notably, 12 of his papers have been recognized as ESI top 1% highly cited papers. In recognition of his research excellence, he was selected as one of the Top 2% Top Scientists Worldwide by Stanford University in 2022.

• Introduction to contemporary water science.- Fundamentals of Water Science.- Water Quality and Treatment.

Prof. Peiyue Li is a full professor in the field of hydrogeology and environmental sciences at Chang’an University, China, where he serves as the Vice Dean of School of Water and Environment. He has wide experience in groundwater quality assessment, hydrogeochemistry, and groundwater modeling. He has led over 30 research projects, edited and co-edited over 10 textbooks and academic monographs, and published over 200 articles in refereed journals on topics that range from groundwater quality assessment and groundwater hydrochemistry to groundwater pumping tests and in situ tracer tests. He at present serves as Associate Editors for Exposure and Health, Mine Water and the Environment, Archives of Environmental Contamination and Toxicology, Environmental Monitoring and Assessment, Human and Ecological Risk Assessment, Applied Water Science, Water Practice and Technology, and Discover Water. He has been awarded one of the most highly cited researchers by Clarivate, Elsevier, and other organizations. He has also been given several national/provincial talent titles and awards for recognizing his achievements in research and teaching. Prof. Vetrimurugan Elumalai is an established Hydrogeologist expertise in contaminant hydrology and groundwater modelling. He is excelling as an established researcher and mentor and Head of the department of Hydrology, University of Zululand, South Africa. He is South African National Chair of Hydrology (SARChI-Tier 1). His project experience covers groundwater resource investigation and development, groundwater characterization, contaminant hydrogeology and urban development, surface water groundwater interactions, remote sensing, and GIS application in Water Resource Management. He has published about 80 research papers in reputed journals. He is registered scientist with SACNASP. He is a life member of International Association of Hydrological Science, International Association of Hydrogeologists, International Association of Hydrological Sciences and Geological Survey of South Africa. Dr. Jianhua Wu is a Full Professor at Chang'an University in China, specializing in hydrology and water resources in arid areas, loess seepage and its disaster mechanisms, and groundwater environmental protection. She has led over ten research projects, and has been awarded more than ten research prizes. Her research output includes over 80 academic papers published in international journals, with 16 of them recognized as highly cited and popular papers by Essential Science Indicators. She is an associate editor for the international journal Exposure and Health. Dr. Wu's research excellence has garnered recognition from prestigious organizations such as Clarivate and Elsevier, who have selected her as one of the most highly cited researchers in the world.Dr. Xiaodong He is an assistant professor specializing in the field of hydrogeology and environmental sciences at Chang’an University, China. He holds a Ph.D. in hydraulic engineering from Chang’an University and possesses extensive expertise in hydrogeochemistry, water-rock interaction, water ecology, and water security. Dr. He has published over 20 scientific papers in renowned international journals, focusing on groundwater quality and groundwater pollution. Notably, 12 of his papers have been recognized as ESI top 1% highly cited papers. In recognition of his research excellence, he was selected as one of the Top 2% Top Scientists Worldwide by Stanford University in 2022.

• Introduction to contemporary water science.- Fundamentals of Water Science.- Water Quality and Treatment.