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NOTICE: Update to the following WFD related datasets: WFD River Waterbodies Cycle 3, WFD River Sub Basins Cycle 3, Catchments Data Package, OSI RIvers and Lakes, OSI Geometric River Network - 08.04.2026
The updated datasets are now available to download. Visit the Get Data page here to download!
NOTICE: EPA Hydrometric Gauges Register 2025 - 12.03.2026
EPA Hydrometric Gauges Register for 2025 is now available to download. Visit the Get Data page here to download!
NOTICE: EPA Licensed Facilities - 2025 - 27.01.2026
EPA Licensed Facilities Data for 2025 is now available to download. Visit the Get Data page here to download!
NOTICE: PRTR Facilities - 2024 - 19.01.2026
PRTR Facilities Data for 2024 is now available to download. Visit the Get Data page here to download!
NOTICE: Lake Phytoplankton Taxonomic Data 2007 – 2025 - 16.12.2025
Lake Phytoplankton Taxonomic Data 2007 – 2025 is now available to download. Visit the Get Data page here to download!
NOTICE: Water Quality Maps and Figures 2019-2024 - 10.12.2025
Water Quality Maps and Figures 2019-2024 are now available to download. Visit the Get Data page here to download!
NOTICE: WFD Subbasin Spatial Data - 10.12.2025
WFD Cycle 2 and Cycle 3 Subbasin Spatial Data is now available to download. Visit the Get Data page here to download!
NOTICE: National Summary Data - 10.12.2025
National Summary Data 2016-2018 and 2019-2021 is now available to download. Visit the Get Data page here to download!