norme (1) eau usée (1) besoin (1) surveillance (1) gène (1) filtration (1) effluent (1) ADN (1) investigation (1) méthode (1) analyse (1) traitement secondaire (1) Monitoring (1) Colonies (1) Treatment (1) Case (1) Methods (1) Genes (1) Membrane separation (1) Water (1) Sewage disposal plants (1) Sewage (1) Plants (1) Grammar, Comparative and general--Case (1) Filters and filtration (1) Escherichia coli (1) DNA (1) Culture (1) Colonies (1) Case (1)