SewageSanitary EngineeringWaste Disposal, FluidDrainage, SanitaryBiological Oxygen Demand AnalysisWater MicrobiologyCarnobacteriaceaeAcidithiobacillus thiooxidansWater QualityWater MovementsReducing AgentsWater Pollutants, ChemicalCitiesEnvironmental MonitoringWater SupplyLeptospirosisGasesWater PollutionFecesSulfurWater PurificationEnterovirusRNA, Ribosomal, 16SRefuse DisposalFresh WaterPoliovirusOdorsBiodegradation, EnvironmentalRivers