/ Thesaurus / S Synonyms of sewage works Find synonyms for: Noun1. sewage system, sewer system, sewage works, facility, installationusage: facility consisting of a system of sewers for carrying off liquid and solid sewageWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: nefarious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language