Final answer:
The term for wastewater discharged after treatment is called effluent. It undergoes three stages of treatment and can be used for non-potable purposes such as landscaping.
Step-by-step explanation:
Wastewater that is discharged after treatment is termed effluent. This treated water, which is also known as effluent, is commonly released into bodies of water such as local rivers or the ocean. While it is not suitable for drinking, it may still serve purposes such as landscaping, including watering lawns or golf courses. In wastewater treatment plants, wastewater undergoes three key stages: primary treatment which focuses on solid removal, secondary treatment which involves bacterial decomposition, and tertiary treatment, also known as effluent polishing, which further cleans the water particularly when it needs to be discharged into a sensitive ecosystem.