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/ga-ie/events-and-news/events/Pages/UCD-Journeys-in-Strange-Lands-Reflections-of-a-Professional-Geologist-.aspxJourneys in Strange Lands: Reflections of a Professional Geologist by Dr Deirdre Lewis (SLR)G01, School of Earth Sciences, University College Dublin2019-11-14T18:00:00.0000000Z2019-11-14T19:00:00.0000000Z
https://www.gsi.ie/ga-ie/events-and-news/events/Pages/Girls_into_Geoscience.aspxGirls into Geoscience Ireland 2019O'Brien Centre for Science, University College Dublin, Stillorgan Road, Dublin 42019-11-16T09:00:00.0000000Z2019-11-16T16:00:00.0000000Z

​Related programmes are Groundwater and Land Mapping.



https://www.gsi.ie/ga-ie/events-and-news/news/Pages/Geoscience-2019.aspxGeoscience 2019 - Geoscience for Climate Action08/11/2019 00:00:00
https://www.gsi.ie/ga-ie/events-and-news/news/Pages/GSI-Host-Inter-Agency-Groundwater-Flood-Steering-Group.aspxGSI Host Inter-Agency Groundwater Flood Steering Group21/10/2019 23:00:00



https://www.gsi.ie/ga-ie/publications/Pages/Dublin-City-Geo-Environmental-Challenges-as-addressed-by-Geological-Survey-Ireland.aspxDublin City Geo-Environmental Challenges as addressed by Geological Survey Ireland10/07/2019 23:00:00
https://www.gsi.ie/ga-ie/publications/Pages/Groundwater-Newsletter-Issue-58-June-2019.aspxGroundwater Newsletter Issue 58 June 201927/06/2019 23:00:00