Fig. 3.

Comparison of the diversity of abundant sequences from swab biofilm and water samples collected from sites supplied by treated municipal water, private well water supplied sites were excluded from this analysis. (A) A comparative histogram of the most abundant swab and water genera identified by BLAST. The total number of sequences for municipal biofilms was n = 3,454, for municipal water n = 1,146. (B) Pie chart of mycobacterial sequences (n = 1,051) identified in showerhead biofilm samples. (C) Pie chart of mycobacterial sequences (n = 131) from water samples.