Influence of pipe materials on the microbial community in unchlorinated drinking water and biofilm

Biodegradable compounds can cause undesired microbial growth in drinking water systems and these originate from the or pipe materials used systems. The aim of our study was to determine influence different on populations biofilm under semi-stagnant conditions. communities water, which were contact with seven materials, characterized by determining ATP concentrations, composition gene copy numbers some specific groups. concentration varied between glass (negative control) < copper PVCC PE-Xc PE-Xb PE-100 PVC-P. Gene Legionella spp., Mycobacterium Pseudomonas Aeromonas fungi Vermamoeba vermiformis also higher for PVC-P PE than glass, PVCC. bacterial community as well. PERMANOVA CAP analysis demonstrated that are when compared other materials. Furthermore, concentrations similar after eight 16 weeks incubation, but differed results obtained one week. Finally, ATP, groups each material. We conclude material is an important factor influences biomass concentration, abundance microorganisms distribution unchlorinated water.