Water balance overview with consideration of supply water quality. The upper half of the circles (blue/yellow colors) refers to water supply qualities (Q1 = drinking water, Q2+Q3 = polluted & saline freshwater, WW2+WW3 =recycled wastewater). The lower half (red/green colors) refers to water usage. The „Dom/Com“ sector includes domestic, public, commercial, and tourism use. The „Agric/Other“ sector includes all water qualities except the drinking water.