What does treated and untreated wastewater mean?
Treated wastewater is wastewater that has been processed with an onboard wastewater treatment plant that can handle black or grey water. Black water that has been macerated is not the same as black water that has been cleaned. All wastewater that has not been treated is referred to as untreated wastewater. All untreated black water discharged in places where it is allowed must go through a macerator initially.