sewerage

/ˈsuːərɪdʒ/
noun
  1. The system of pipes and drains that carry away waste water and sewage from buildings.
    • A blockage in the sewerage caused raw waste to back up into the basement.
    • Modern sewerage systems are essential for public health in large cities.
    • The city is upgrading its sewerage to handle more homes and businesses.
  2. The waste water and sewage carried by such a system.
    • Untreated sewerage can pollute rivers and harm wildlife.
    • The treatment plant processes all the sewerage from the surrounding towns.
    • They tested the sewerage for harmful bacteria before releasing it into the ocean.