§ Sir Charles MorrisonTo ask the Secretary of State for the Environment whether any research has been undertaken into the effects of winter salting of roads on the quality of river water and on the breeding capability of brown trout and other fish; and if he will make a statement.
§ Mr. Howard[holding answer 17 October 1989]: I am not aware of any research which has been undertaken into the effects of the winter salting of roads on the quality of river water. However, I am advised that past research shows that limited amounts of salt in freshwater has negligible effects on the breeding capability of brown trout and other fish.