Luxembourg, Belgium (Wallonia), Ireland (south-west), and specific areas of Spain (north-east) and Austria (north-east) show mainly values between 10 and 25 mg NO3/l, indicating already considerable Nfluxes to lakes and seas, and important potential eutrophication effects.
Il Lussemburgo, il Belgio (Vallonia), l’Irlanda (sud-ovest) ed alcune regioni nord-orientali della Spagna e dell'Austria presentano per lo più valori compresi tra 10 e 25 mg NO