174. Unless otherwise provided for, for the purposes of this Chapter,(1) the maintenance of a system or equipment concerns work to maintain its useful life and clean it, if no change is made to the initial function of the system or equipment;
(2) a modification includes the replacement of a pipe, device, apparatus or piece of equipment by another, or its relocation;
(3) section 32.3 of the Act does not apply to(a) an application for authorization for the modification of a water management or treatment facility referred to in the Regulation respecting private waterworks and sewer services (chapter Q-2, r. 4.01); (b) an application for authorization for the establishment, modification or extension of a water management or treatment facility that is not referred to in the Regulation respecting private waterworks and sewer services and is not operated by a municipality.