Summary: This report provides summary information on the status of our rivers, lakes, estuaries, coastal waters (known collectively as surface waters) and groundwaters. It is based on information collected over a 6-year period from 2019 to 2024 under Ireland’s national water quality monitoring programme from over 4,000 surface water bodies and 514 groundwater bodies. It highlights changes in the condition of these waters, identifies the main problems causing water quality issues and sets out what actions need to be taken to protect this important national resource.