Fig. 3From: Interactive effects of temperature, organic carbon, and pipe material on microbiota composition and Legionella pneumophila in hot water plumbing systemsEffect of various factors on relative abundances of potential opportunistic pathogens. Changes in the relative abundance of a Mycobacterium spp. and b Legionella spp. with temperature based on Illumina sequencing. c Relative abundance of L. pneumophila based on qPCR (mip gene copies/16S rRNA gene copies) for PEX condition only. Water supplemented with 0–700 μg/L AOC were fed to SWHs and incubated at increasing temperatures (32–53 °C). Circles and triangles represent SWHs with copper and PEX pipe sections, respectively. Error bars represent standard errors of triplicate SWHsBack to article page