· Evolution of methods, practices, and techniques of water resources management
· Water heritage
· Water and health history
· History of climate change and/or variability
· Farmers and citizens: The socio-economic role through the centuries
· Historical development of water technologies: From mythology to traditional practices and to water sciences
· Evolution of wastewater and storm water systems
· Ancient Water and Sanitation Systems
· Old influence in modern water and wastewater technologies
· History of circular economy
· Iconographic aspects of water and wastewater in ancient civilizations
· Juridical, institutional, and social evolution of water and wastewater systems