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GIS Map Application Ammonium in rivers
The map shows the mean annual concentration of total ammonium (TA), expressed as milligrams of N-NH4 per litre of water, observed in river monitoring stations and reported by EEA member countries via WISE. For most countries the mean annual value is based on observations over the whole year, whereas some countries only collect samples during the growing season (due to ice cover in winter). Total ammonium concentration can increase as a result of discharges from waste water treatment plants, industrial effluents and agricultural runoff. Ammonium exerts a demand on oxygen in water as it is transformed to oxidised forms of nitrogen. It is also an important nitrogenous fertilizer for aquatic plants, so it can cause eutrophication and indirectly reduce the dissolved oxygen due to increased BOD. In addition it is toxic to aquatic life at certain concentrations in relation to water temperature, salinity and pH. For example ammonium hydroxide in water is extremely toxic to fish and aquatic life at elevated pH levels. It can also pollute drinking water and bathing water. The purpose of the map is to provide an overview of the mean annual value of total ammonium in rivers across Europe and to enable the user to compare values per country or individual monitoring station, depending on the scale of visualisation. Historical data since 1993 can be displayed using the time slider.
Located in Data and maps Interactive maps
GIS Map Application Orthophosphates in rivers
The map shows the mean annual concentration of orthophosphates (OP), expressed as milligrams of PO4-P per litre of water, observed in river monitoring stations and reported by EEA member countries via WISE. For most countries the mean annual value is based on observations over the whole year, whereas some countries only collect samples during the growing season (due to ice cover in winter). High or increased (compared to reference condition) concentration of phosphates represents a risk to normal functioning of river ecosystems, causing eutrophication with potentially excessive growth of benthic algae or other aquatic vegetation, oxygen deficiency in the bottom substrate and reduced biodiversity. The purpose of the map is to provide an overview of the mean annual value of orthophosphates in rivers across Europe and to enable the user to compare values per country, River Basin District (RBD) or individual monitoring station, depending on the scale of visualisation. Historical data since 1993 can be displayed using the time slider.
Located in Data and maps Interactive maps
GIS Map Application Ammonium in groundwater
The map shows the mean annual concentrations of ammonium (NH4+), expressed as milligrams of NO2-N per litre of water, observed in groundwater monitoring stations and reported by EEA member countries via WISE. The purpose of the map is to provide an overview of the mean annual value of ammonium in groundwater across Europe and to enable the user to compare values per country or per groundwater body, depending on the scale of visualisation. Historical data since 2000 can be displayed using the time slider, and different horizons can be selected using the layers menu.
Located in Data and maps Interactive maps
GIS Map Application Water quality monitoring station density
The map shows the density of water quality monitoring stations, reported by EEA member countries via WISE SoE reporting. The density of river monitoring stations is represented per national River Basin District (RBD). Note that the set of monitoring stations used by Member States to assess the chemical and ecological status of river water bodies under the Water Framework Directive may not be the same set of stations used for the annual WISE SoE water quality reporting. Historical data since 1992 can be displayed using the time slider.
Located in Data and maps Interactive maps
Highlight More than half of EU surface waters below ‘good’ ecological status
Water pollution and physical modifications are still affecting the ecology of many of Europe’s lakes, rivers, transitional water bodies and coastal waters. These problems are likely to prevent the water bodies reaching ‘good’ status by 2015, a target set by the EU’s Water Framework Directive (WFD).
Located in News
Data Waterbase - Emissions to water
Emissions to water are an important element (describing the pressure) in assessment of the state of Europe’s environment (SoE). This database contains data on emissions of nutrients and hazardous substances to water, aggregated within River Basin Districts (RBDs), in the EEA member countries. The reporting process, endorsed by the Water Directors, and this publication of the data, enables all stakeholders to use the data and contributes to streamlining with other reporting processes.
Located in Data and maps Datasets
Figure Comparison of water quality in rivers in the Czech Republic, 1991–1992 and 2010–2011
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Located in Data and maps Maps and graphs
Briefing Freshwater quality
Located in SOER 2015 — The European environment — state and outlook 2015 European briefings
Data Waterbase - Emissions to water
Emissions to water are an important element (describing the pressure) in assessment of the state of Europe’s environment (SoE). This database contains data on emissions of nutrients and hazardous substances to water, aggregated within River Basin Districts (RBDs), in the EEA member countries. The reporting process, endorsed by the Water Directors, and this publication of the data, enables all stakeholders to use the data and contributes to streamlining with other reporting processes.
Located in Data and maps Datasets
Data Waterbase - UWWTD: Urban Waste Water Treatment Directive
Urban Waste Water treatment Directive concerns the collection, treatment and discharge of urban waste water and the treatment and discharge of waste water from certain industrial sectors. The objective of the Directive is to protect the environment from the adverse effects of the above mentioned waste water discharges.
Located in Data and maps Datasets
European Environment Agency (EEA)
Kongens Nytorv 6
1050 Copenhagen K
Denmark
Phone: +45 3336 7100