9 Signs You're a wastewater treatment process Expert
http://reidqqku309.jigsy.com/entries/general/how-the-10-worst-industrial-wastewater-disposal-fails-of-all-time-could-have-been-prevented
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,