A section 91 order may make provision for the threshold requirement (see section 17D of the Water Industry Act 1991) to have effect for a relevant period in relation to the supply of water to any premises, where the supply to those premises is made in connection with the introduction of water into the supply system of a water undertaker under a new wholesale authorisation.

Provision under sub-paragraph (1) may in particular include such modifications of Schedule 2A to the Water Industry Act 1991 (forms of authorisations given by water supply licences) as appear to the Secretary of State to be appropriate.