HC Deb 11 June 1975 vol 893 cc176-7W
24. Mr. Hurd

asked the Secretary of State for the Environment what is his latest estimate of the number of domestic and business properties in England and Wales not connected with main drainage.

Mr. John Silkin

The water authorities estimate that about 1 million domestic properties are not connected to main drainage. There are as yet no reliable figures for equivalent non-domestic properties.