Section 19(1): amended, on 23 October 1969, by section 2(1) of the Rangitaiki Land Drainage Amendment Act 1969 (1969 No 103).
Section 19(1)(a): amended, on 1 April 1980, by section 8(3) of the Local Government Amendment Act 1979 (1979 No 59).
Section 19(1)(b): amended, on 1 April 1980, by section 8(3) of the Local Government Amendment Act 1979 (1979 No 59).
Section 19(1)(c): amended, on 1 April 1980, by section 8(3) of the Local Government Amendment Act 1979 (1979 No 59).
Section 19(2): inserted, on 28 October 2021, by section 3 of the Secondary Legislation Act 2021 (2021 No 7).