#sewage_system__sewer_system__sewersystem__sewage_works  facility consisting of a system of sewers for carrying off liquid and solid sewage
  supertype:  #installation__facility  a building or place that provides a particular service or is used for a particular industry; "the assembly plant is an enormous facility"
  part of:  #infrastructure
  part:  #sewerage__sewer__cloaca  a waste pipe that carries away sewage or surface water
  part:  #sewer_main__sewermain__sewer_line__sewerline  a main in a sewage system

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