Map of poisonous arsenic in European aquifers.

The latest Newsletter of the HOVER project in the @GeoERA program is now available on-line:  HOVER Newsletter – In the newsletter you will find a map of arsenic concentrations in European aquifers. Arsenic is a trace element in groundwater and drinking water of health concern and responsible for the largest mass poisoning in history according to Mori et al. 2018. See the map and read more about other exciting and relevant results of the HOVER project in the newsletter.

The map is an example of what will later this year be accessible at the HOVER project website on the GeoERA webpage and via metadata searches and map viewers on the EGDI (European Geological Data Infrastructure) subsurface information platform of the @EuroGeoSurveys. For more information please contact the HOVER project lead: Laurence Gourcy,

Too much, too little or too polluted? – groundwater research needs in the 2020s

Just one week left to the GeoERA groundwater webinar presenting the four #GeoERA groundwater projects on groundwater quantity and quality in a changing climate, and discussing #groundwater research needs and web services e.g. with the new Horizon Europe partnership candidate “Water4All – water security for the planet” – register here: and contribute with your views on groundwater and #water resources research needs for the next decade – your views count.

flood 2013 linz, austria. overflows and flooding

YOUR VIEWS COUNT – JOIN OUR GEOERA WEBINAR SERIES – especially the groundwater webinar on 13.11.2020 – 10.00-12.00 CET


Registration for the GeoERA Webinar Series

Contribute with your views trough polling and audience participation – the four GeoERA groundwater projects HOVER, RESOURCE, TACTIC and VOGERA are presented and discussed in the GeoERA groundwater webinar on Friday 13.11.2020, 10-12.00 CET. Please join us and take part in the polling on and discussion of the current most important groundwater research challenges in Europe and globally. If you want you can prepare yourself by reading about the four groundwater projects and the projects of the other GeoERA themes here:

GeoERA: Towards integrated European Geoscience Services – follow our online EGU2020 session Friday 08-05-2020, 8.30 – 10.15 CET

Tomorrow is the big day for the projects of the GeoERA program at EGU2020. All 15 GeoERA projects: are presented in more than 20 abstracts, powerpoints and posters in session ERE1.2: GeoERA: Towards integrated European Geoscience services for today’s and future generations. You can download the presentations and ask questions in an online chat for each presentation here: – please join us

Groundwater age distributions in contaminated European aquifers

This week we planned to have our midterm meeting in the #GeoERA HOVER project: in Madrid – unfortunately, we had to cancel because of COVID-19 – instead we had videomeetings for all our eight work packages. Here Hans Peter Broers of the Dutch Geological survey, TNO, explains about the use of groundwater dating in contaminant trend assessment using nitrate and veterinary antibiotics as examples in HOVER WP6 on the use of groundwater dating and travel time distributions. These examples, which are also very relevant for HOVER WP5 and 8 on nitrate & pesticides and emerging contaminants, respectively, will be included in the map viewer on the HOVER project website and in the GeoERA information platform / the European Geological Data Infrastructure (EGDI) with access to peer reviewed papers, reports and other relevant information on these important groundwater studies. READ MORE ABOUT THE HOVER PROJECT HERE:

Nitrate trend assessment in Dutch groundwater

Veterinary antibiotics in age dated Groundwater in the Netherlands
Continue reading “Groundwater age distributions in contaminated European aquifers”

Climate change scenarios for the 41 TACTIC pilot areas in Europe now available

Lead by Deltares (Netherlands), TACTIC have now produced standard #climatechange scenarios for all 41 pilot areas across Europe from Ireland to Ukraine and from Malta to Finland. The standard TACTIC #scenarios are produced to enable a harmonized comparison of impacts on #groundwater resources across Europe as a result of climate change. The standard climate change scenarios will be applied in a variety of tools within TACTIC from integrated #hydrological models to #time-series analysis but are also available for use outside TACTIC. Read more and get access to the scenarios via the TACTIC website:

Diagram with map showing location of TACTIC pilot sites across Europe where the developed climate change scenarios are used to assess CC impacts on groundwater and adaptation strategies in combination with a variety of modeling and analytical tools

Application of groundwater age and travel time distributions – Example from a water supply well polluted by pesticides

Groundwater age and travel time distributions have many applications – below you can find a link to a research paper where you can read about investigations of a pesticide polluted drinking water well and the history and fate of the two pesticides found in the well. The work is closely related to especially the work of task 6.4 in the HOVER project, which investigates groundwater age and travel time distributions in water supply wells with long screens and the application of these in groundwater management and protection.

How old are our precious groundwater resources?

How old is our groundwater and how well is this precious resource protected towards pollution from the surface or from subsurface activities?

Researchers from the Netherlands and Germany currently collaborates on the investigation of Dutch groundwater resources

Read more about this important research activity at the GeoERA HOVER website:

GeoERA at the 34th Nordic #Geological Winter Meeting in Oslo

About 600 geologists from 20 countries currently meets in Oslo, Norway at NGWM2020 – – I’ve just presented the GeoERA program – focusing on the four GeoERA groundwater projects and #sustainable use of subsurface #resources including water and carbon in its many forms. The meeting is held at the University of Oslo / #OiU – here it is Prof. Dag Olav Hessen, Head of the OiU “Centre for biogeochemistry in the Anthropocene” in his Keynote on the importance of carbonate and carbonate cycling not only for humanity but for all life on Earth. Water and carbon are essential for all life on our planet.

Dag Olav Hessen presenting his Keynote on carbon at NGWM2020 at OiU