GroundwaterWater Pollution, ChemicalWater Pollutants, ChemicalFresh WaterBiodegradation, EnvironmentalWater WellsWater MicrobiologyGeologic SedimentsXylenesWater MovementsTolueneWater Pollutants, RadioactiveWater SupplyUraniumTrichloroethyleneGeologyEnvironmental RemediationWater PollutantsWater PollutionGeological ProcessesBenzene DerivativesArsenicRNA, Ribosomal, 16SHydrocarbonsComamonasPetroleumBetaproteobacteriaBenzeneSoil PollutantsDeltaproteobacteriaSulfur-Reducing BacteriaMethanosarcinalesGasolineRefuse DisposalSulfatesProteobacteriaGeological PhenomenaChlorobenzenesEnvironmental MonitoringDNA, RibosomalCarbon-Carbon LyasesBacteriatert-Butyl AlcoholAgricultural IrrigationAnaerobiosisAmphipodaEcosystemWater ResourcesBacteria, AnaerobicMethylocystaceaePhylogenyStrontium IsotopesRiversGeobacterFerric CompoundsWaste ProductsDrinking WaterOxidation-ReductionMaineMethaneEthylene DichloridesNitratesHydrocarbons, HalogenatedPhenolMethanomicrobiaceaeRadiumSilicon DioxideBangladeshSequence Analysis, DNAHydrocarbons, AlicyclicWater PurificationDNA, BacterialArsenic PoisoningMiningSoil MicrobiologySoil Pollutants, RadioactiveGram-Negative Anaerobic BacteriaCalcium CarbonateSoilMineralsThiosulfatesTetrachloroethyleneCresolsMethylococcaceaeMolecular Sequence DataBacteria, AerobicVinyl ChloridePseudomonasArchaeaArthrobacterMethyl EthersSewageGenes, rRNADesulfovibrioEukaryotaChloroflexiAerobiosisVietnamBacterial LoadIron