noun
ADJECTIVE
▪ raw , untreated
▪ treated
VERB + SEWAGE
▪ discharge , dump , pump
▪
In some parts of the country raw ~ is pumped straight in the ocean.
▪ treat
▪
Sewage should be treated in a proper disposal system.
SEWAGE + NOUN
▪ disposal , treatment
▪ farm ( BrE ), plant ( esp. AmE ), works ( BrE )
▪
a ~ treatment plant
▪ system
▪ pipe
▪ discharge , effluent , sludge
▪ pollution