ICPR – International Commission for the Protection of the Rhine

Water quality data

The state of the Rhine is being monitored from Switzerland until the Netherlands. The first monitoring was carried out as early as the 1950ies, so that, for certain substances in the Rhine, corresponding time series are available. Over time, more and more substances were included in monitoring activities, the measurement of suspended matter was expanded and the sampling frequency was increased. Monitoring results are supplemented every year, thus continuing time series.

All data are available here.

Net of Monitoring stations of the Rhine 2021-2026