SewageWaste Disposal, FluidWater PurificationWater MicrobiologySanitary EngineeringDrainage, SanitaryWater PollutionRefuse DisposalWaste ManagementWater Pollutants, ChemicalFresh WaterNorth DakotaOocystsAir MicrobiologyEnterovirusEnvironmental MonitoringBiodegradation, EnvironmentalFecesSulfamethoxazoleEnterobacteriaceaeBacteriaEndotoxinsOccupational ExposureSeasonsRNA, Ribosomal, 16SEscherichia coliOccupational DiseasesDNA, BacterialMolecular Sequence Data