(1) If the regulator is not satisfied about a matter mentioned in section 87(1) in relation to a plan received, the regulator may require the water service provider to provide further information about the matter.
(2) If the water service provider does not provide the information within the reasonable period stated in the request, the regulator--
(a) must refuse to approve the plan; and
(b) must give an information notice under section 88(3) stating that the plan is inadequate on the basis that the information has not been given.