[noun] [U]Some cities in the world do not have proper facilities for the disposal of sewage (= waste matter such as water or human urine or excrement).Raw/untreated sewage is being pumped into the sea, from where it pollutes our beaches.If properly treated, sewage can be used as fertilizer.A sewage (treatment) plant (also sewage farm /UK also sewage works) is a place where sewage is treated so that it can be safely got rid of or changed into fertilizer.
SEWAGE
Meaning of SEWAGE in English
Cambridge English vocab. Кембриджский английский словарь. 2012