Treated wastewater is introduced into surface water bodies, such as reservoirs or lakes, before being extracted, treated again, and used as drinking water. This method is particularly useful for increasing the capacity of existing water sources.
• Applications: Cities with large reservoirs, areas dependent on surface water for drinking supplies, and regions prone to water shortages during dry seasons.
• Advantages: Enhances the storage capacity of surface water bodies, provides a buffer during dry periods, and supports urban water management efforts.