§ 43. Mr. WallaceTo ask the Secretary of State for the Environment what plans he has to tackle the problem of eutrophication in British waters.
§ Mr. Heathcoat-AmoryEutrophication is a problem in only a few British waters. It is tackled on a case-by-case basis which takes into account local conditions. The National Rivers Authority has the responsibility for setting the standards of effluents discharged into those waters. The most common method of control is the removal of phosphates at sewage treatment works. Other measures being taken which will reduce inputs of nutrients to our coastal waters are listed in the United Kingdom North sea action plan. The decision to ban dumping of sewage sludge at sea, and to treat all substantial sewage discharges to sea will further reduce nutrient inputs by between 10 per cent. and 20 per cent.