Water is the world’s most important resource, without it life on Earth would not exist. We rely on it for everything from drinking supplies, to its use in agriculture, to supporting animal and plant life around the world. Approximately 71% of the Earth’s surface is covered by water but not all of it is available to us for use.

Over 96% of the world water is held in our oceans and only 2.5% of Earth’s water is freshwater. Of this 2.5% of freshwater the majority is trapped in glaciers and ice-caps with the remainder being groundwater or surface water such as lakes and rivers. 

In Ireland we rely heavily on groundwater, it supplies 20-25% of our drinking water supplies and in some counties it supplies up to 50%. In rural areas not served by water schemes it is the only source of drinking water with these areas relying on wells and springs. Links below will allow you to explore the following themes:

The water cycle

Bottled water


Water Quantity and Quality



https://www.gsi.ie/en-ie/events-and-news/events/Pages/IGRM-2024.aspxIrish Geoscience Research Meeting 2024Arts Millenium Building, University of Galway2024-03-01T18:00:00.0000000Z2024-03-03T16:00:00.0000000Z

Further information about the above topics can be found in the Groundwater programme pages.



https://www.gsi.ie/en-ie/events-and-news/news/Pages/2023-Du-Noyer-Photographic-Competition-Winners.aspx2023 Du Noyer Photographic Competition Winners20/12/2023 00:00:00
https://www.gsi.ie/en-ie/events-and-news/news/Pages/Book-Launch-Wells-and-Wellbeing.aspxBook Launch: Wells and Wellbeing The Hydrogeology of Irish Holy Wells15/12/2023 00:00:00



https://www.gsi.ie/en-ie/publications/Pages/Hydrogeological-Assessment-of-the-Groundwater-Resources-in-the-Boyne-Catchment.aspxHydrogeological Assessment of the Groundwater Resources in the Boyne Catchment31/01/2023 00:00:00
https://www.gsi.ie/en-ie/publications/Pages/Groundwater-resources-assessment-Nore-Catchment.aspxGroundwater resources assessment: Nore Catchment02/01/2023 00:00:00