(1) In this Act, unless the context otherwise requires,—
Board means the Hutt Valley Drainage Board constituted under this Act
condensing water means any water used in any trade, industrial or commercial process, or operation, in such a manner that it cannot take matter into solution or suspension
constituent authority means the local authority of any local district the whole or any part of which is for the time being comprised within the district of the Board
contributing authority means a constituent authority which is for the time being liable to pay any contribution in accordance with section 58
domestic sewage means liquid wastes, including matters in suspension and in solution therein, discharged from premises used solely for residential purposes, or liquid wastes of the same character discharged from other premises; but does not include any solids, liquids, or gases which may not be lawfully discharged into public sewers, nor any trade wastes or noxious matters
drainage district or district means the Hutt Valley Drainage District constituted under this Act
Engineer or Engineer to the Board means the Chief Engineer for the time being of the Board, and includes any person for the time being appointed by the Board to perform the duties of the Chief Engineer, howsoever designated
local authority means the Council of a city, borough, or county
local district means the district of a city, borough, or county
main sewer means a sewer conveying, or designed or intended to convey, sewage from the whole or any part of a sewerage reticulation system to any other main sewer or main drain or to any outfall sewer or to treatment works or to any other point of disposal; and includes all sewers and drains carrying discharge from a pumping station and also includes all manholes, valves, fittings, measuring chambers, pumping stations, storage tanks, and other erections and structures appurtenant to or forming part of any main sewer or main drain; but does not include any pumping station or sewer which the Board, after consultation with the constituent authorities, determines shall not be a main sewer or part of a main sewer
main sewerage works means all main sewers, main drains, manholes, measuring chambers, pumping stations, storage tanks, outfall sewers, treatment works, and all other similar works and other structures appurtenant thereto, used or intended to be used for or in the process of or in connection with the disposal of sewage, together with any storm-water overflow chamber used or intended to be used for relief of the system in wet weather
measuring chamber means any manhole or chamber together with any measuring or metering device used or intended to be used for the determination of rates or volumes of flow
noxious matters means, in relation to a sewerage system, any solid, liquid, or gaseous matter, or any combination or mixture of such matters, which by themselves or in combination with any other matters in the system may, either immediately or in the course of time, interfere with the free flow of the contents of the system, or damage any part of the system, or become prejudicial to health, or affect prejudicially the safety of any person; and means, in relation to a watercourse or tidal waters, any solid, liquid, or gaseous matter, or any combination or mixture of such matters which may become prejudicial to health, or affect prejudicially the safety of any person, or, by odour, colour, or appearance, be offensive or objectionable, or be toxic to fish or animals, or affect the growth of plant life or vegetation
pretreatment works means any works, structures, equipment, or machinery used or intended to be used for a variation of the quality of trade wastes, or for the removal of noxious matters from any liquid prior to the discharge of such trade wastes or liquid into any sewerage system
public sewer means a sewer forming part of a sewerage system controlled by the Board or by any constituent authority
quality, in relation to sewage and trade wastes, means the nature, composition, constitution, character, or attributes thereof or of any ingredient thereof
sampling chamber means any manhole or chamber provided to facilitate the taking of samples of liquids or gases
Secretary means the Secretary for the time being of the Board, and includes any person for the time being appointed by the Board to perform the duties of the Secretary, howsoever designated
sewage means all domestic sewage, and all water-borne wastes from commercial or industrial undertakings; but does not include surface or subsoil water led into a sewerage reticulation system
sewer means any pipeline or culvert, above or below ground level, used or intended to be used to convey sewage
trade premises means any premises from which any trade wastes, condensing water, or noxious matters are being or may be discharged
trade wastes means any liquid, with or without matters in suspension or in solution therein, which is being or may be discharged in the course of any trade, business or industry or any commercial process or operation; but does not include condensing water or surface water which is discharged directly into a surface-water drain
trade wastes drain means any pipeline, channel, culvert, or ditch conveying or intended to convey trade wastes, with or without condensing water, to any public sewer or to any storm-water drain or through an outfall sewer to any watercourse, tidal waters, or other place of disposal
treasurer means the treasurer for the time being of the Board, and includes any person for the time being appointed by the Board to perform the duties of the treasurer, howsoever designated
watercourse includes all rivers, streams, and passages through which water flows; but does not include closed drains and sewers.