5 Laws Anyone Working in wastewater Should Know
https://collinpdqp412.page.tl/11--g-Faux-Pas-g--That-Are-Actually-Okay-to-Make-With-Your-Industrial-wastewater-disposal.htm
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,