PHYSICAL AND CHEMICAL PRINCIPLES: Physical properties of water -- Solutions -- GEOCHEMICAL PROCESSES AND WATER: Dissolution, hydrolysis, and precipitation -- Adsorption and ion exchange -- Oxidation and reduction -- Gas exchange between groundwater and atmosphere -- Biological processes -- Man-made factors -- GROUNDWATER: Origins of groundwater -- Groundwater properties and constituents -- Influence of aquifer materials on groundwater quality -- CLASSIFICATION AND ASSESSMENT OF GROUNDWATER: Reporting and handling of physical and chemical data; methods of illustrating -- Groundwater classification.