Fig. 5From: Comparison of the microbiomes of two drinking water distribution systems—with and without residual chloramine disinfectionBeta diversity of water-main biofilms and drinking water principal coordinates analysis of the generalized UniFrac distances for water-main biofilms and drinking water from the chloraminated and no-residual drinking water distribution systems: a principal axis 2 versus 1 and b principal axis 3 versus 1. Percentages = variance explainedBack to article page