Geochemical model of the groundwater at county-wide scale in Romania. Case study

This paper presents a functional model for the investigation of the groundwater quality expanded to the size of a county of Romania, considered as a case study. Were followed several steps: defining the surface area of the study, establishing the methodology of the investigation (the sampling method and the quality indicators), design of the experimental field, applied methodology and getting a set of functional groundwater geochemical model of the entire county. Were determined for each groundwater sample a total of 20 physical and chemical quality indicators and overall analytical determinations were subjected to a total of 119 samples of water from underground with free level. Each sample was located with a GPS receiver, so all the results are a georeferenced database for the entire county. We have mapped the distribution of the pollutant concentrations to a number of relevant nutrient pollution category and a map of the "nitrates" indicator, the pollutant with the highest amplitudes of the concentrations recorded.