Subject to any conditions imposed under section 237(2)(b) , an authorised officer may, at any reasonable time and for the purposes of this Act –

(a) measure the flow or levels of water in any watercourse, dam or lake or the flow of water under or over any land; or

(b) measure the quantity of water taken by any person from a water resource or dam; or

(c) ascertain the quality of water in a watercourse, lake or dam or of any groundwater; or

(d) take samples of water on, or under, any land; or

(e) take samples of any material of a kind that, in the officer’s opinion, has entered, or may enter, water on or under any land; or

(f) make such measurements or undertake such activities as are necessary to ascertain the state of the environment of a watercourse, dam or lake or of groundwater; or

(g) ascertain the location of or inspect a works used for, or in connection with, the taking of water; or

(h) inspect any machinery or equipment or structure which may be used for taking, storing, pumping, transporting or supplying water; or

(i) inspect and examine meters and ascertain the quantity of water taken by a person; or

(j) inspect, repair or maintain in working order any property owned by the Crown or under its control or management or inspect any property owned by a water entity or under its control or management; or

(k) carry out a survey or investigation for, or in connection with, a works for the supply of water under this Act; or

(l) maintain a works for the supply of water or carry out a modification to any such works; or

(m) inspect any waterworks, use of water, or the level or flow of a watercourse or lake; or

(n) examine any water, cuttings or other materials required to be preserved under section 132(1) ; or

(o) carry out such operations on a well, to determine the condition of the well or of the soil, rock or other water-bearing material in which the well is situated or of waters, as the Minister may authorise and specify in a notice for the purposes of this subsection; or

(p) take photographs, films or video or audio recordings or make a record in any other manner or by any other means; or

(q) require a person who the officer reasonably believes has committed, is committing or is about to commit an offence against this Act to state the person’s full name and usual place of residence; or

(r) require a person holding or required to hold an authorisation to produce evidence of the authorisation for inspection; or

(s) take any action or execute any work required by this Act to be taken or executed in connection with the performance of the functions or the exercise of the powers of a water entity under this Act if the water entity is in default after being requested for a reasonable time to take that action or execute that work; or

(t) exercise any other powers prescribed by regulations.