Which type of water container is typically used for storing treated water in a treatment plant?

The type of water container typically used for storing treated water in a treatment plant is tank reservoirs. These structures are designed specifically for storage purposes and allow for the containment of large volumes of water while maintaining quality and safety standards. Tank reservoirs can be constructed from various materials such as steel or concrete and are equipped with features to minimize contamination risks, such as covers and proper sealing.

They are essential in the treatment process as they provide a buffer between treatment and distribution, ensuring a consistent supply of clean water for the community. The design of tank reservoirs helps in maintaining the desired water pressure and can accommodate fluctuations in demand, making them a critical component of a water treatment facility. Other choices, like open basins, may not provide the same level of protection from contamination and evaporation, while plastic bags and sealed drums are not practical for the large quantities of water that treatment plants handle.