§ Mr. SpearingTo ask the Secretary of State for Health what recent studies have been made concerning the volume of rodent infestation of sewers and its impact on public health. [7122]
§ Mr. ClappisonI have been asked to reply.
No national studies have been undertaken into the level of rats in sewers. However, all sewerage undertakers have programmes to control and reduce the number of rats in their systems. The scale of the problem of rat infestation is generally considered to be static or declining in some areas.