This dataset contains age tracer concentrations as measured in NZ groundwater samples through time. Tracers include Tritium, SF6, CFCs, Halon-1301. These tracer concentrations enable estimation of groundwater residence time, using mixing models to convolute input to output concentrations through hydrologic systems (e.g. aquifer, river catchment). Data are continuously added, to cover more areas, and because time series data improve the robustness of age interpretation DOI: https://doi.org/10.21420/JEBK-5288 Cite as: GNS Science. (2021). Groundwater age tracer data set [Data set]. GNS Science. https://doi.org/10.21420/JEBK-5288

The LIMS Water Dating Lab Information System contains sample submission information for tritium, CFC, SF6, radon, stable isotope, and C14 samples submitted to the Water Dating Lab. The LIMS records data on sample processes and pretreatment. Once the results have been checked and pass QC then these results are uploaded to the LIMS masterlist. The database creates results reports as the user requests. The results are reported by email to commercial clients. invoicing is independent of the database, however invoice numbers are recorded in the database for reference. The Water Dating Lab manages the digital databases, paper records and physical remains of submitted materials.