Basin-distributed groundwater samples from three aquifers of the Paraná Sedimentary Basin: Bauru, Serra Geral, and Guarani

This dataset presents 207 groundwater samples available in the literature for the Baixo Pardo Grande (BXPG) Basin, located in Northeastern São Paulo, Brazil. The basin is formed by three-layered aquifers, from the bottom (basement): the Guarani Aquifer System (GAS), the Serra Geral Aquifer System (SGAS), and the Bauru Aquifer System (BAS). Samples for the three aquifers are included, some of which have stable isotopes and residence time data.