b27ce2ee-89ee-428d-bcd5-4abd97141d62 English ISO/IEC 8859-1 (also known as Latin 1) dataset dataset NERC EDS Environmental Information Data Centre Lancaster Environment Centre, Library Avenue, Bailrigg Lancaster LA1 4AP UK info@eidc.ac.uk https://eidc.ac.uk/ EIDC website The Environmental Information Data Centre (EIDC) is the UK's national data centre for terrestrial and freshwater sciences. information pointOfContact 2025-11-13T16:25:58 UK GEMINI 2.3 WGS 84 Groundwater bacterioplankton, fluorescent organic matter and nutrient concentration of three major aquifers in England, September-October 2022 and January-February 2023 2025-07-01 publication https://catalogue.ceh.ac.uk/id/b27ce2ee-89ee-428d-bcd5-4abd97141d62 10.5285/b27ce2ee-89ee-428d-bcd5-4abd97141d62 doi: Bhattacharyya, A., Nicholls, D. (2025). Groundwater bacterioplankton, fluorescent organic matter and nutrient concentration of three major aquifers in England, September-October 2022 and January-February 2023. NERC EDS Environmental Information Data Centre 10.5285/b27ce2ee-89ee-428d-bcd5-4abd97141d62 This dataset contains information about planktonic bacterial quantity at the drinking water pumping stations installed in three different aquifer types of England. The aim of data collection was to assess spatial and seasonal variation of groundwater bacterioplankton distribution and their dependence on organic matter, nutrient concentration and local hydrogeology. Untreated groundwater samples were collected from the intergranular sandstone aquifer of English Midlands and East Midlands, the dual porosity chalk aquifer of South East England and the karstic limestone aquifer of the Cotswolds. For temporal variation in each aquifer, the same aquifers were sampled during pre-recharge season in September-October 2022 and post-recharge season in January-February 2023. Full details about this dataset can be found at https://doi.org/10.5285/b27ce2ee-89ee-428d-bcd5-4abd97141d62 Bhattacharyya, A. British Geological Survey archb1@bgs.ac.uk pointOfContact Bhattacharyya, A. British Geological Survey archita.bhatt96@gmail.com https://orcid.org/0000-0003-3669-0675 ORCID record ORCID is an open, non-profit, community-driven effort to create and maintain a registry of unique researcher identifiers and a transparent method of linking research activities and outputs to these identifiers. information author Nicholls, D. UK Centre for Ecology & Hydrology enquiries@ceh.ac.uk author British Geological Survey EMAIL NOT PROVIDED owner Lancaster University EMAIL NOT PROVIDED owner NERC EDS Environmental Information Data Centre info@eidc.ac.uk publisher NERC EDS Environmental Information Data Centre info@eidc.ac.uk custodian Environmental Monitoring Facilities Human Health and Safety theme GEMET - INSPIRE themes, version 1.0 2008-06-01 publication groundwater quality bacterium organic carbon GEMET - Concepts, version 4.1.3 2019-01-28 creation Water quality Environmental survey otherRestrictions no limitations otherRestrictions This resource is available under the terms of the Open Government Licence otherRestrictions If you reuse this data, you should cite: Bhattacharyya, A., Nicholls, D. (2025). Groundwater bacterioplankton, fluorescent organic matter and nutrient concentration of three major aquifers in England, September-October 2022 and January-February 2023. NERC EDS Environmental Information Data Centre https://doi.org/10.5285/b27ce2ee-89ee-428d-bcd5-4abd97141d62 textTable English utf8 environment inlandWaters 2022-09-01 2022-10-31 2023-01-01 2023-02-28 -3.054 0.355 51.169 53.226 Comma-separated values (CSV) NERC EDS Environmental Information Data Centre info@eidc.ac.uk distributor https://data-package.ceh.ac.uk/data/b27ce2ee-89ee-428d-bcd5-4abd97141d62 Download the data Download a copy of this data download https://data-package.ceh.ac.uk/sd/b27ce2ee-89ee-428d-bcd5-4abd97141d62.zip Supporting information Supporting information available to assist in re-use of this dataset information dataset dataset Commission Regulation (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services 2010-12-08 Groundwater bacterioplankton concentration distribution in drinking water sources are poorly characterised. Therefore we collected groundwater samples form drinking water pumping stations installed in Permo-Triassic sandstone aquifer of English Midlands and East Midlands, Cretaceous Chalk aquifer of South-East England and Jurassic Limestone aquifer of Cotswold, each with distinct aquifer properties. From the intergranular sandstone, dual porosity chalk, and karstic limestone aquifers 29 , 32 , and 8 sites respectively were sampled in the pre-recharge and 34, 33, and 8 sites respectively were sampled in the peak-recharge seasons. The bacterioplankton total cell concentration (TCC), high nucleic acid cell percentage (%HNA) and intact bacterial cell percentage (%ICC) were measured used Attune Cytpix Flow Cytometer. The data was collected in triplicate, filtered noisy data by manual inspection, and the current data contains average values from the triplicate and standard deviations of the replicated. Fluorescence organic matter (fOM) loading and fluorescence indices were measured using an Aqualog® fluorimeter (Horiba Scientific, Japan). Raw data was processed and PARAFAC analysis was performed using R package staRdom to find the fOM loading values. Dissolved organic carbon (DOC) and total dissolved nitrogen (TDN) concentrations were measured on filtered groundwater samples using an Elementar Vario Cube (Elementar Ananlysensysteme GmbH; Langenselbold, Germany). Borehole depth, perforation depth, were assessed using BGS borehole logs. Confinement and surface water vulnerability interpretations were provided by respective water companies.