Luxembourg environment data

This dataset was reported by the Grand Duchy of Luxembourg under the Urban Waste Water Treatment Directive. Under article 15, discharges from urban waste water treatment plants have to be monitored to verify compliance with the emission control standards. Member States and Commission have jointly developed technical specifications for such reporting within WISE (Water Reporting System for Europe). Delivery process or content of this obligation overlaps with another reporting obligation (http://rod.eionet.europa.eu/obligations/645). This reporting obligation is an Eionet core data flow Reporting under this obligation is used for EEA Core set of indicators Delivery process is managed by EEA

Analyses of substances in biota are carried out once per year at selected monitoring stations. Crustacean analyses have been conducted annually in spring since 2019, while fish analyses have been conducted annually in autumn since 2015. The chemicals analysed include priority substances and priority hazardous substances with a tendency to accumulate in biota, in accordance with the Water Framework Directive (2000/60/EC) and the Environmental Quality Standards Directive (2008/105/EC). Parameters analysed in fish are identified by the suffix _FISH, and those analysed in crustaceans by the suffix _GAM.

This dataset was reported by the Grand Duchy of Luxembourg under the Urban Waste Water Treatment Directive. Under article 15, discharges from urban waste water treatment plants have to be monitored to verify compliance with the emission control standards. Member States and Commission have jointly developed technical specifications for such reporting within WISE (Water Reporting System for Europe). Delivery process or content of this obligation overlaps with another reporting obligation (http://rod.eionet.europa.eu/obligations/645). This reporting obligation is an Eionet core data flow Reporting under this obligation is used for EEA Core set of indicators Delivery process is managed by EEA

This dataset was reported by the Grand Duchy of Luxembourg under the Urban Waste Water Treatment Directive. Under article 15, discharges from urban waste water treatment plants have to be monitored to verify compliance with the emission control standards. Member States and Commission have jointly developed technical specifications for such reporting within WISE (Water Reporting System for Europe). Delivery process or content of this obligation overlaps with another reporting obligation (http://rod.eionet.europa.eu/obligations/645). This reporting obligation is an Eionet core data flow Reporting under this obligation is used for EEA Core set of indicators Delivery process is managed by EEA

Measurement stations for the qualitative and quantitative monitoring of groundwater for the 3rd cycle (2015-2020) in relation to the Water Framework Directive (2000/60/EC).

The ecological status of the natural waterbodies is assessed in 5 classes going from 1 to 5 (high, good, moderate, poor, bad). The classification of the ecological status is based on the biological quality elements, physico-chemical quality elements and in some cases also the hydromorphological quality elements. For more information : https://eau.gouvernement.lu/fr/administration/directives/Directive-cadre-sur-leau/2e-cycle-(2015-2021).html

Analysis of substances in surface water sediments are carried out at once a year at a selection of monitoring stations of the international hydrographical district of the river Rhine. Chemicals analysed include specific pollutants, priority substances and priority hazardous substances that have a tendency to accumulate in sediments in accordance with the Water Framework Directive (2000/60/EC) and the Environmental Quality Standards Directive (2008/105/EC).

Analysis of watchlist substances in surface waters are carried out at a frequency of 4 times per year at two representatif surveillance stations in Luxembourg. The chemicals included in the watchlist are determined on a EU level and include chemicals that potentially pose a significant risk to the aquatic environment but for which insufficient data exist to determine the actual risk posed by these substances. The first watchlist (EU 2015/495; https://eur-lex.europa.eu/eli/dec_impl/2015/495/oj) was analysed from January 2016 until April 2018.

Analysis of watchlist substances in surface waters are carried out at a frequency of 4 times per year at two representatif surveillance stations in Luxembourg. The chemicals included in the watchlist are determined on a EU level and include chemicals that potentially pose a significant risk to the aquatic environment but for which insufficient data exist to determine the actual risk posed by these substances. The second watchlist (EU 2018/840; https://eur-lex.europa.eu/eli/dec_impl/2018/840/oj) was analysed from July 2018 until January 2021.

Analysis of substances in surface water suspended solids are carried out at a frequency of 13 times per year at a monitoring station of the international hydrographical district of the river Rhine. Chemicals analysed include physico-chemical substances, specific pollutants, priority substances, priority hazardous substances and heavy metals.

Analysis of watchlist substances in surface waters are carried out at a frequency of 4 times per year at two representatif surveillance stations in Luxembourg. The chemicals included in the watchlist are determined on a EU level and include chemicals that potentially pose a significant risk to the aquatic environment but for which insufficient data exist to determine the actual risk posed by these substances. The analysis for the fourth watchlist (EU 2022/1307; https://eur-lex.europa.eu/eli/dec_impl/2022/1307/oj) started in January 2023 and is still ongoing.

Analysis of watchlist substances in surface waters are carried out at a frequency of 4 times per year at two representatif surveillance stations in Luxembourg. The chemicals included in the watchlist are determined on a EU level and include chemicals that potentially pose a significant risk to the aquatic environment but for which insufficient data exist to determine the actual risk posed by these substances. The third watchlist (EU 2020/1161; https://eur-lex.europa.eu/eli/dec_impl/2020/1161/oj) was analysed from March 2021 until October 2022.

According to the water framework directive WFD(DIR 2000/60/CE), important physico chemical parameters are measured in the surface water bodies for the assessment of the ecological status. The modalities for this monitoring are stated in the grand ducal Regulation of 30 December 2010 (règlement grand-ducal you 30 décembre 2010 concernant l 'évaluation of the dimension d' eau de surface).

The macroinvertebrates are sampled according to the French method IBGN ( indice biologique global normalisé , agences de l' eau 2000). The results allow to classify the surface water bodies into 5 classes : high - good - moderate - poor - bad. Macroinvertebrates are sensitive to the hydromorphology, organic pollution , biological continuity , water regime and acidification. The Macroinvertebrates are one out of four biological parameters of the ecological status of surface water. For more information : https://eau.gouvernement.lu/fr/administration/directives/Directive-cadre-sur-leau/2e-cycle-(2015-2021).html

Evaluation of the quality element “continuity” per surface water body. For more information : https://eau.gouvernement.lu/fr/administration/directives/Directive-cadre-sur-leau/2e-cycle-(2015-2021).html

Network of measurement stations for the period from 2015 to 2020, established as part of the surface water quality monitoring program in accordance with the Water Framework Directive (2000/60/EC). The measurement network includes two components: the surveillance control network and the operational control network. The results of this monitoring program (2015-2020) were used for assessing the state of surface water bodies within the framework of the 3rd management plan. Physico-chemical parameters as well as chemical parameters are sampled at the same station. The location of biological parameter measurement stations may vary slightly.

Evaluation of the quality element “morphological conditions” per surface water body. For more information : https://eau.gouvernement.lu/fr/administration/directives/Directive-cadre-sur-leau/2e-cycle-(2015-2021).html

Phytoplancon is one of the 4 biological quality elements (BQE) for the assessment of the ecological status of the natural water bodies. The evaluation of this BQE is only relevant for the large rivers where the quantity of phytoplancton is significant and can be evaluated. The natural water bodies of typology VI present significant phytoplancton concentrations to allow an assessment. Some of the heavy modified waterbodies (HMWB) present significant phytoplancton concentrations too, these are the HMWB Sûre (WB III-2.2.1) and the HMWB Our (WB V-1.2). The annual frequency for phytoplancton monitoring is 6 samples between April and October. For more information : https://eau.gouvernement.lu/fr/administration/directives/Directive-cadre-sur-leau/2e-cycle-(2015-2021).html

The "good ecological potential" is the environmental quality objective defined by the water framework directive for artificial and heavily modified surface water bodies. The ecological potential is assessed in four classes ranging from 1 to 4 (good and higher, moderate, poor, bad). The classification of the ecological potential is based on the biological, physico-chemical and in some cases also the hydromorphological quality elements. For more information : https://eau.gouvernement.lu/fr/administration/directives/Directive-cadre-sur-leau/2e-cycle-(2015-2021).html

The surface water typology was determined on the basis of geographical , geological, morphological and hydrological characteristics. The Luxembourgish surface water typology comprises six types. For all six types the reference conditions, which would be achieved if there were no anthropogenic pressures impacting surface waters, are described in fact sheets. The reference conditions correspond to the high status of surface water bodies.

With regard to the implementation of the Water Framework Directive, specific types of watercourses have been designated for Luxembourg. As in the context of various works the German stream types (LAWA types) are used, these have also been assigned to the Luxembourgish surface water bodies