Danish
Water Well
Drillers'
Association
FDB
Finnish
Well Drillers'
Association
PORATEK
Norwegian association
of heavy equipment
contractors
MEF
Swedish
Water Well Drillers'
Association
GEOTEC
 

For time beeing there is no national organisation on Iceland - only a few drilling companies operate there. One of those companies is a member of Geotec, the Swedish association.
A majority of Norwegian water well drillers are members of MEF.