The bacteria sequence data generated in this study is available in the Short Read Archive (SRA) of NCBI (https://www.ncbi.nlm.nih.gov/) under BioProject PRJNA509718. This dataset is associated with the following publication: Siponen, S., J. Ikonen, V. Gomez-Alvarez, A. Hokajärvi, M. Ruokolainen, B. Jayaprakash, M. Kolehmainen, I.T. Miettinen, T. Pitkänen, and E. Torvinen. Effect of Pipe Material and Disinfectant on Active Bacterial Communities in Drinking Water and Biofilms. JOURNAL OF APPLIED MICROBIOLOGY. Blackwell Publishing, Malden, MA, USA, 136(1): lxaf004, (2025).