Influent 2 topics · 2 sources Science› EnergyRenewable EnergyWastewater going into the sewage treatment plant.Oregon Dept of Energy — ODOE Glossary of Energy Terms retrieved 2014-06-15 Cite ScienceWaterUntreated water flowing into a treatment facility, reservoir, or basin. See effluent. Bureau of Reclamation — Bureau of Reclamation Glossary Cite