are wastewater treatment plant and sewage treatment plants same?? Share with your friends Share 0 Priya Chauhan answered this Dear student, sourish is correct. Keep posting students :) . Regards. 2 View Full Answer Sarvesh Lokhande answered this Ram ram kaku???? -1 Sourish Vats answered this Yes they are kinda the same wastewater is the sewage water so hence you can call wastewater treatment plant or sewage treatment plant 2