§ Mr. McNamara
To ask the Secretary of State for the Environment (1) what account he takes of topography and salinity when deciding the outer estuarine boundary of the River Humber; 
(2) if he will now receive the outer estuarine limit of the Humber under the urban waste water directive taking account only of objective criteria. 
§ Mr. Clappison
The National Rivers Authority has been asked to review the basis for establishing estuary boundaries for the purposes of the urban waste water treatment directive, including the relevance of salinity and topography, and to advise my Department accordingly.