👉 In environmental science, effluent is a mixture of waste water or sewage that has been treated and discharged into a body of water for disposal. It can include various substances such as chemicals, organic matter, and nutrients. Effluent refers to the wastewater produced by a process (such as industrial processes) before it enters a treatment plant where it is treated and then discharged back into the environment. The effluent includes pollutants that are harmful to aquatic life and other organisms in the water system, which can cause