A proposal for groundwater sampling guidelines: application to a case study in southern Latium

The notable differences observed in the analytical results for groundwater samples collected by different operators in several sites in Italy, pointed out the need for a standardized procedure for groundwater sampling at the national level. This "best practice" document, produced by IRSA-CNR and here described, aims to uniform the sampling procedures in order to have comparable results and to manage groundwater monitoring in a more participated and efficient manner. The proposed guideline underlines the relevance of the conceptual model implementation, as well as of the planning and sampling phases.