The 3 Greatest Moments in Industrial wastewater disposal History
https://www.minds.com/wellan1ehu/blog/15-best-blogs-to-follow-about-wastewater-treatment-process-1004147968619372544
Wastewater refers to all effluent (= sewage or liquid waste that is discharged into water bodies either from direct sources or from treatment plants) from household, commercial establishments and institutions,