Dataset supporting the article: The dynamics of biofilms in Mediterranean drinking water

This dataset contains microbial community composition data and associated environmental variables from a study of chlorinated drinking water distribution systems in Valencia, Spain. It includes: Taxonomic abundance data at class and genus levels (Analysis Class Valencia, Analysis Genera Valencia) Calculated diversity indices (Data Indices Valencia) Physico-chemical measurements of water samples across multiple sampling sites and time points (Datos physico-chemica Valencia) Sequencing files and pipeline: A compressed folder (Analysis_Pipeline) including raw and processed sequencing files in FASTQ and FASTA formats, and a directory structure split by domain (Eukaryote, Prokaryote, AllDomains) The sequencing data are based on 16S rRNA gene amplicon sequencing. The analysis was performed using standard bioinformatic tools, and metadata includes parameters such as residual chlorine, temperature, pH, and conductivity. These resources are intended to support further research into microbial ecology, water quality monitoring, and bioinformatics benchmarking.