The data release includes surface and groundwater chemistry data from 99 samples (33 surface water, 60 groundwater, and 6 groundwater duplicates) collected during the baseline water monitoring at the UK Geoenergy Observatories (UKGEOS) Glasgow facility. This release from the British Geological Survey (BGS) covers surface and groundwater samples collected between 22 June 2021 and 28 January 2022 from 6 surface water sites, 5 mine water boreholes, and 5 environmental monitoring boreholes. The samples were then analysed for the concentrations of selected parameters at BGS and other laboratories. It contains a report and 2 data sheets GroundWaterChemData2 and SurfaceWaterChemData3.