Eurowaternet: towards an index of quality of the national data in Waterbase

This report provides guidance to member countries on quality control procedures for Eurowaternet data which need to be taken into account at national and regional levels. The guidance focuses on quality control of sampling and analysis. It describes tests on the integrity of the data carried out by the European Topic Centre on Water before the data are uploaded to the Waterbase database. An attempt to develop a semi-quantifiable index of the quality of data held in Waterbase is also described.