Allowable values of rcaParameter element

Code	Label	Definition
aN		Nitrogen eutrophication (nitrogen has to be removed from the Urban Waste Water Treatment plants belonging to agglomeration of more than 10 000 p.e. and discharching into sensitive areas)
aP		Phosphorus eutrophication (phosphorus has to be removed from the Urban Waste Water Treatment plants belonging to agglomeration of more than 10 000 p.e. and discharching into sensitive areas)
b		Nitrogen drinking water (nitrogen has to be removed from the Urban Waste Water Treatment plants belonging to agglomeration of more than 10 000 p.e. and discharching into sensitive areas)
c		Areas where further treatment than that prescribed in Article 4 of the UWWTD is necessary to fulfil Council Directives