(1) A permit authority may refuse an application for a plumbing permit under section 165 if the permit authority considers the refusal to be reasonable in the circumstances.(2) A permit authority must refuse an application for a plumbing permit under section 165 if the permit authority is satisfied that (a) the proposed permit plumbing work will not comply with this Act; or(b) all appropriate protection work has not been, or will not be, performed in respect of the work; or(c) the proposed permit plumbing work will not be performed by a licensed plumber; or(d) the responsible person for the work does not meet the requirements of section 5 .(3) If a permit authority refuses an application for a plumbing permit under section 165 , the permit authority must notify the applicant in writing of (a) the refusal of the application; and(b) the reason for the refusal of the application; and(c) the right of appeal under this Act in respect of the decision to refuse the application.