As nouns the difference between sewerage and wastewater
is that sewerage is a sewer system while wastewater is any water that has been used by some human domestic or industrial activity and, because of that, now contains waste products.
sewerage
English
Noun
A sewer system.
Quotations
* 2010, India Today 5 Apr 17
*: About 3.6 billion tonnes of untreated sewerage flows daily into the Yamuna, which supplies over 60 percent of Delhi's water.
wastewater
English
Noun
(
wikipedia wastewater)
(
en noun)
Any water that has been used by some human domestic or industrial activity and, because of that, now contains waste products.
Synonyms
* sewage