Layer 4: Stocks and flows
4.13. Flows: Water
All flows of water within the territory. These include the extraction of water from the natural environment, the amount of water moving into water treatment plants and reservoirs, and water consumption within the territory (please give the latter also the Consumption tag). Rainwater harvesting is also relevant in certain areas. Wastewater flows into wastewater treatment plants as well as the flows out of wastewater treatment works are also key.