18 .F1—(1) Where, whether before or after 1st October 1973, any service pipe or drain from any premises has been or is lawfully connected with a main or sewer, or any sewage disposal works, vested in the Ministry or any predecessor in title of it, the owner or occupier of the premises may take a sufficient supply of water for his domestic[F2, central heating and sanitary] purposes from that main or may drain domestic sewage and surface water from his premises into the sewer or works.
(2) Nothing in this Article shall authorise the owner or occupier of any premises—
(a)to discharge domestic sewage into a sewer reserved for the conveyance of surface water; or
(b)to discharge, without the approval of the Ministry, surface water into a sewer reserved for the conveyance of domestic sewage.
F1functions transf. by SR 1999/481