Regulation 7 Revocation and modification of authorisations
Subject to paragraphs (2) and (3), the Secretary of State may at any time modify or revoke an authorisation (whether or not the authorisation is expressed to be granted for a specified period); and regulation 6 shall apply as respects the modification of an authorisation as it applies as respects the granting of an authorisation.
The Secretary of State shall not revoke or modify an authorisation without giving at least six months' notice of his intention to do so to—
the water authority to which the authorisation relates; and
the district or islands council in whose area is situated any premises in relation to which the authorisation applies;
but he may revoke or modify an authorisation without notice if it appears to him that the immediate revocation or modification of the authorisation is required in the interests of public health.
A water authority on whose application an authorisation has been granted under this Part shall notify the Secretary of State as soon as the circumstances which gave rise to the application for the authorisation cease to exist; and, notwithstanding paragraph (2), the Secretary of State shall thereupon revoke the authorisation.