sewerage

noun

1. (countable, uncountable)A network of sewer pipes that geographically transfers wastewater; a sewer system.
2. (countable, nonstandard, rare, uncountable)Sewage.

   “Mr. Lovick made a similar experiment, to determine accurately the amount of sewerage from 1,200 average sized houses in London, where there was an intermittent supply of water from the different water companies.”

   “They put off paedophiles by spraying the child with eight litres of pressurized sewerage.”

   “About 3.6 billion tonnes of untreated sewerage flows daily into the Yamuna, which supplies over 60 percent of Delhi's water.”