Sewage
Part of speech: noun
Definition: A suspension of liquid and solid waste, and water runoff, transported by sewers to be disposed of or processed. (Obsolete usage) sewerage.
Effluent
Part of speech: adjective
Definition: Flowing out; outflowing.
Part of speech: noun
Definition: A stream that flows out, such as from a lake or reservoir; an outflow; effluence.Sewage water that has been (partially) treated, and is released into a natural body of water; a flow of any liquid waste.