§ Mrs. ClwydTo ask the Secretary of State for the Environment how many sites have received consent to discharge any of the following substances into the Irish sea for the year 1987–88: (i) phosphate, (ii) arsenic, (iii) lead, (iv) nickel, (v) chromium, (vi) zinc, (vii) manganese, (viii) cadmium, (ix) copper, (x) uranium, (xi) fluoride, (xii) mercury, (xiii) halogenated hydrocarbons, (xiv) pcb's, (xv) organo chlorines, (xvi) dioxins, and (xvii) organo phosphates.
§ Mr. MoynihanThe Department collects information on discharges of a limited number of these substances in connection with the reporting requirements of European Community directives. The number of sites known to be discharging these substances into the Irish sea and its tidal estuaries is as follows:
Information on discharges of the other substances listed is not held centrally. The public registers maintained by water authorities in England and Wales, river purification boards in Scotland and the Department of the Environment for Northern Ireland contain details of all authorised discharges of sewage and trade effluent.
- cadmium—12 sites
- mercury—five sites
- halogenated hydrocarbons: carbon tetrachloride—one site
- organochlorines: HCH, DDT, PCP—no sites.