62fe92d8-db54-4285-9617-573e77a55c4b 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 2026-02-06T14:11:44 UK GEMINI 2.3 WGS 84 Physicochemical parameters of Chennai and Pondicherry water samples near antimicrobial manufacturing sites, India, 2023-2024 2026-01-18 publication https://catalogue.ceh.ac.uk/id/62fe92d8-db54-4285-9617-573e77a55c4b 10.5285/62fe92d8-db54-4285-9617-573e77a55c4b doi: RU, V.P.N., Suseela, M.N.L., Patharaj, G., Kumaresan, T.N., Pan, S., Vieira, A., Sriskandan, S., Freeman, A., Giakoumis, T., Voulvoulis, N., Selvin, J., Ragunathan, L., Muthu, M.S. (2026). Physicochemical parameters of Chennai and Pondicherry water samples near antimicrobial manufacturing sites, India, 2023-2024. NERC EDS Environmental Information Data Centre 10.5285/62fe92d8-db54-4285-9617-573e77a55c4b [This dataset is embargoed until May 5, 2026]. These datasets contain information about the physicochemical properties of water samples taken from Pondicherry and Chennai in 2023 and 2024. Water samples were collected from river, lake, canal and tank water bodies in Pondicherry and Chennai, with locations selected due to their proximity to antimicrobial manufacturing sites. The physicochemical properties of each sample were analysed to determine water quality at each site and how this may be impacted by local antimicrobial pollution. Variables such as; temperature, oxidation reduction potential, salinity, pH, dissolved oxygen content, conductivity, resistivity, total dissolved solids, atmospheric pressure and seawater sigma were accounted for. Full details about this dataset can be found at https://doi.org/10.5285/62fe92d8-db54-4285-9617-573e77a55c4b Voulvoulis, N. Imperial College London n.voulvoulis@imperial.ac.uk pointOfContact RU, V.P.N. Pondicherry University vishnuprasadnovember@gmail.com author Suseela, M.N.L. Indian Institute of Technology BHU luckytulasi4@gmail.com author Patharaj, G. Indian Institute of Technology BHU gokulpatharaj@gmail.com author Kumaresan, T.N. Pondicherry University kumaresann48@gmail.com author Pan, S. Aarupadai Veedu Medical College & Hospital sayareepan@gmail.com author Vieira, A. Imperial College London ana.vieira@imperial.ac.uk author Sriskandan, S. Imperial College London s.sriskandan@imperial.ac.uk author Freeman, A. Imperial College London anna.freeman@imperial.ac.uk author Giakoumis, T. Imperial College London theodoros.giakoumis13@imperial.ac.uk author Voulvoulis, N. Imperial College London n.voulvoulis@imperial.ac.uk author Selvin, J. Pondicherry University jselvin.mib@pondiuni.edu.in author Ragunathan, L. Aarupadai Veedu Medical College & Hospital latha.ragunathan@avmc.edu.in author Muthu, M.S. Indian Institute of Technology BHU msmuthu.phe@itbhu.ac.in author Imperial College London 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 Water quality Pollution Environmental risk Chennai Pondicherry Puducherry Water quality Physicochemical AMR Antimicrobial resistance India Antimicrobial manufacturing Antibiotic manufacturing Pharmaceutical pollution Pharmaceutical manufacturing waste Water pollution otherRestrictions Embargoed otherRestrictions This resource is available under the terms of the Open Government Licence otherRestrictions If you reuse this data, you should cite: RU, V.P.N., Suseela, M.N.L., Patharaj, G., Kumaresan, T.N., Pan, S., Vieira, A., Sriskandan, S., Freeman, A., Giakoumis, T., Voulvoulis, N., Selvin, J., Ragunathan, L., Muthu, M.S. (2026). Physicochemical parameters of Chennai and Pondicherry water samples near antimicrobial manufacturing sites, India, 2023-2024. NERC EDS Environmental Information Data Centre https://doi.org/10.5285/62fe92d8-db54-4285-9617-573e77a55c4b textTable English utf8 environment inlandWaters location health 2023-01-01 2024-12-12 79.631 80.198 11.877 12.692 Comma-separated values (CSV) NERC EDS Environmental Information Data Centre info@eidc.ac.uk distributor 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 Samples were collected following a standardized operating procedure mutually agreed upon by the collaborating partners. For water samples, collection was performed at depths ranging from 1 to 5 meters using a sterile container attached to a pulley system. Control samples were collected from upstream sites selected to represent areas unaffected by pollution from manufacturing sources. All samples were collected in triplicates to ensure reproducibility and statistical reliability with composite samples created from three sampling points in each location. Duplicate samples were also randomly collected as part of quality control. Parameters were measured in situ using a portable multiparameter Aquaprobe AP-200 with a GPS Aquameter (Aquaread AP 2000). Initial data entries were recorded manually on paper and subsequently digitized into Excel spreadsheets. No imputation or gap-filling procedures were applied to the dataset. In cases where certain parameters exhibited readings below the detection threshold, the measurement units automatically shifted to a lower metric scale. For example, dissolved oxygen concentrations were recorded in mg/L by default but were represented in µg/L for particularly low-concentration samples. For the sake of consistency and uniformity across the dataset, all such values were converted back to the default unit of mg/L. Samples were transported to the laboratory on the same day in a refrigerated isothermal container and stored at −20 °C until analysis to preserve their integrity. Upon arrival, the samples were processed immediately for both culture-based microbiological analyses and metagenomic DNA extraction, thereby maintaining sample freshness and minimizing potential degradation. Bacterial isolates obtained from each sampling site were preserved as glycerol stocks and stored at −80°C to maintain viability for future analyses. Due to a lack of water at the site because of warm conditions, no water samples were collected from PSL10 in 2023. The levels were similarly low the following year, so this site was excluded from water and physicochemical analysis.