effluentliquid waste or sewage discharged into a river or the seaStrict regulations now control the discharge of industrial effluent into waterways.NoteStrict regulations now control the discharge of industrial effluent into waterways.Elon.io is an online learning platformWe have an entire course teaching IELTS Vocabulary — Band 7+ grammar and vocabulary.Start learning IELTS Vocabulary — Band 7+ now