... all discharges into the waters referred to in Article 1 which are liable to contain any such substance shall require prior authorization by the competent authority of the Member State concerned; the authorization shall lay down emission standards with regard to discharges of any such substance into the waters referred to in Article 1...
Hea teada
Normally, gaseous discharges are called emissions, while liquid discharges are called effluents. Solid wastes, in more candid fashion, are called discharges.