sullage

sullage (usually uncountable, plural sullages)

The liquid discharges from kitchens, washbasins, toilets etc; sewage.
- 1645 February 18 (Gregorian calendar), John Evelyn, “[Diary entry for 8 February 1645]”, in William Bray, editor, Memoirs, Illustrative of the Life and Writings of John Evelyn, […], 2nd edition, volume I, London: Henry Colburn, […]; and sold by John and Arthur Arch, […], published 1819, →OCLC:
  The streets [were] exceedingly large, well paved, having many vaults and conveyances under them for the sullage.
Silt or sediment deposited from flowing water.
That which sullies or defiles.
- 1692–1717, Robert South, Twelve Sermons Preached upon Several Occasions, volume (please specify |volume=I to VI), London:
  , "The Lineal Descent of Jesus of Nazareth from David by his Blessed Mother the Virgin Mary"
  It is the privilege of the celestial luminaries to receive no tincture, sullage, or defilement from the most noisome sinks and dunghills here below.
(metallurgy) The scoria on the surface of molten metal in the ladle.

John A. Simpson and Edmund S. C. Weiner, editors (1989), “sullage”, in The Oxford English Dictionary, 2nd edition, Oxford: Clarendon Press, →ISBN.
Water Supply & Sanitation by M. Feroze Ahmed & Md. Mujibur Rahman

English