The organic load of the industrial treated wastewater discharged into natural receiving waters represents 3.142 per cent of the organic load of urban wastewater discharged into natural receiving waters. Council Directive 76/464/EEC of 4 May 1976 on pollution caused by certain dangerous substances discharged into the aquatic environment of the Community has been transposed into Romanian legislation by MO No. Annex 2 of this amending GD sets limit values for pollutants in surface waters which are highly toxic, persistent and bioaccumulative, in addition to stipulating environmental standards and quality standards. Annex 6 contains guidelines for developing an inventory of emissions, discharges and losses of priority substances and specific pollutants.