Questions › Category: Civil Engineering › The colour of septic sewage is 3 Vote Up Vote Down VideRime Staff asked 3 years ago The colour of septic sewage is a) black b) green c) grey d) blue Environmental Engineering MCQs Set-1 Share this Now with Friends:WhatsAppTelegramMore Related 1 Answers 3 Vote Up Vote Down Best Answer VideRime Staff answered 3 years ago blue Share this Now with Friends:WhatsAppTelegramMore Related