READ ME This text describes the data presented in the paper: A comparative assessment of conventional and molecular methods, including MinION nanopore sequencing, for surveying water quality ======================== Introductory information ======================== Files included in the data deposit (include a short description of what data are contained): 1) Chemical analysis and coliform plate count data 2) Illumina MiSeq 16S amplicon sequencing data, OTU table for samples and MOCK community 3) MinION MOCK community 16S amplicon sequencing data 4) Classified reads, MinION 16S amplicon sequencing data, for locations 2-13 5) quantitative polymerase chain reaction (qPCR) marker gene data Explain the relationship between multiple data sets, if required: Different water quality parameter for the same samples. See method description in the paper for a description of each sampling location. Key words used to describe the data: Chemical and microbiological water quality data, NGS, qPCR, faecal marker ========================== Methodological information ========================== A brief method description – what the data is, how and why it was collected or created, and how it was processed: The method description is available in the manuscript and supporting information Instruments, hardware and software used: The method description is available in the manuscript and supporting information Date(s) of data collection: 2018 Geographic coverage of data: Nepal, Kathmandu Valley (see map in the manuscript) Data validation (how was the data checked, proofed and cleaned): The method description is available in the manuscript and supporting information Overview of secondary data, if used: ========================= Data-specific information ========================= Definitions of names, labels, acronyms or specialist terminology uses for variables, records and their values: See manuscript for more information about sampling locations 1-13. Explanation of weighting and grossing variables: The method description is available in the manuscript and supporting information Outline any missing data: The method description is available in the manuscript and supporting information ======= Contact ======= Please contact rdm@ncl.ac.uk for further information