Groundwater quality, multi-model WQI, and health-risk data for the Bukinske water intake, Izium, Ukraine, 2003–2012

This dataset contains quarterly physicochemical groundwater analyses for six wells (No. 4, 5, 61, 62, 63, and 82) of the Bukinske water intake in Izium, Kharkiv Region, Ukraine. The supplied source records cover years within the 2003–2012 study period, although the available years and quarters differ among wells. The complete extracted dataset contains 21 organoleptic and physicochemical parameters. A separate analysis-ready subset contains the eleven parameters used in the related studies: ammonium, nitrite, nitrate, manganese, copper, iron, pH, total hardness, chloride, oxidizability, and sulfate. Results reported in the publications are provided as separate derived tables: annual average concentrations, weighting coefficients for ISWM, EWM, and HRWM, WQI results for each well, and total health-risk indicators. Values reported below a detection limit are preserved with the qualifier and the stated analytical limit. They are not replaced with zero or an assumed concentration. Missing cells remain missing. The source documents contain apparent transcription, unit, and labeling anomalies. These values have not been silently corrected; they are preserved and flagged where automatically detectable. Publication-derived aggregate tables are kept separate from source-extracted quarterly records. Related publications: Bezsonnyi et al. (2025), DOI: 10.52363/2522-1892.2025.1.5; and “Groundwater quality assessment using health risk-based weighting”, Monitoring’2025, Mon25-194.</p>"