Fig. 1From: Comparison of the microbiomes of two drinking water distribution systems—with and without residual chloramine disinfectionCharacterization of water-main biofilms. a Taxonomic profiles of dominant genera in biofilms via 16S rRNA gene amplicon sequencing and b marker gene concentrations via qPCR. Samples not sequenced due to low 16S rRNA gene copy numbers are represented with empty spaceBack to article page