Groundwater body 2021

Upper Liassic [Fissured aquifer, sand- and limestone]
Middle Liassic [Fissured aquifer, sand- and limestone]
Lower Liassic [Fissured aquifer, sand- and limestone]
Triassic - Eastern [Fissured aquifer, sand- and limestone]
Triassic - Northern [Fissured aquifer, sand- and limestone]
Devon [Fissured aquifer, shale and quartz]

https://eau.gouvernement.lu/fr/administration/directives/Directive-cadre-sur-leau/3e-cycle-(2021-2027).html