Waste WaterWaste Disposal, FluidSewageWater PurificationIndustrial WasteWater MicrobiologyBiological Oxygen Demand AnalysisWater Pollutants, ChemicalWaste ManagementWater PollutantsFlocculationBiodegradation, EnvironmentalWaste ProductsRNA, Ribosomal, 16SGasolineRiversRailroadsWater PollutionBacteriaSpace FlightDNA, RibosomalFresh WaterMedical WasteWater Pollution, ChemicalPhylogenyNitrificationCarbanilidesSequence Analysis, DNADenitrificationProteobacteriaWater SupplyAgricultural IrrigationEnvironmental MonitoringDNA, BacterialBioelectric Energy SourcesNitrosomonasAnaerobiosisSeasonsAmmoniaAir MicrobiologyWater MovementsFiltrationAnostracaWater QualityAstronautsBiotaAgricultureWeightlessnessSeawaterEnterovirusSpacecraftCitiesLabor PresentationMolecular Sequence DataNursing StationsLabor Stage, SecondGeologic SedimentsGenes, rRNABiodiversityCyclosporaGiardiaEcosystemRadioBacteria, AnaerobicDenaturing Gradient Gel ElectrophoresisNitrogenEndospore-Forming BacteriaWetlandsMetals, HeavyChlorella vulgarisRefuse DisposalAquacultureTemperatureBetaproteobacteriaNitritesUnited States National Aeronautics and Space AdministrationHydrocarbons, AromaticAerobiosisMethaneAntarctic RegionsNitrosomonadaceaeGroundwaterEnterobacteriaceaeEnvironmental RemediationRecyclingManureSoil PollutantsEcological Systems, ClosedVirusesPoliovirusBase CompositionPolyphosphatesMicropore FiltersPetroleumPolyhydroxyalkanoatesMid-Atlantic RegionPolymerase Chain ReactionPower PlantsFecesComamonadaceae