§ Mr. Llew SmithTo ask the Secretary of State for the Environment what was the total annual discharge into the Severn estuary from English counties of(a) ammonia, (b) cadmium, (c) lead, (d) copper, (e) chromium, )f) cyanide, (g) nickel, (h) mercury and (i) zince in the latest year for which figures are available.
§ Mr. Maclean[holding answer 16 February 1993]: The information requested is not held centrally. Details of maximum authorised loads contained in relevant discharge consents, and related water quality monitoring results for the Severn estuary, are available on public registers in the National Rivers Authority regions concerned.