sewage

n. drain water, waste water carried away by drainpipes

Sewage is the mainly liquid waste containing some solids produced by humans which typically consists of washing water, faeces, urine, laundry waste and other material which goes down drains and toilets from households and industry. It is one type of wastewater, and is a major actual or potential source of pollution especially in urban areas. Sewage services exist to manage sewage by collection, treatment and recycling or safe disposal into the environment.
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Noun
1. waste matter carried away in sewers or drains
(synonym) sewerage
(hypernym) waste, waste material, waste matter, waste product
(substance-meronym) effluent, wastewater, sewer water

(n.)
The contents of a sewer or drain; refuse liquids or matter carried off by sewers
  

(n.)
Sewerage, 2.
  

The waste and wastewater produced by residential and commercial sources and discharged into sewers.