232.—(1) Any person designated in writing for the purpose by a sewerage undertaker shall, on producing any duly authenticated document showing his authority, have a right to enter any premises at all reasonable hours—
(a)for the purpose of ascertaining whether there is or has been, on or in connection with the premises, any contravention of any of the relevant sewerage provisions which it is the function of the undertaker to enforce;
(b)for the purpose of ascertaining whether or not circumstances exist which would authorise or require the undertaker to take any action or carry out any works under any of the relevant sewerage provisions;
(c)for the purpose of taking action or carrying out any works authorised by or under any of the relevant sewerage provisions to be taken or carried out by the undertaker;
(d)generally for the purpose of carrying out the undertaker’s functions under the relevant sewerage provisions.
(2) Part I of Schedule 4 shall apply to the right of entry conferred by paragraph (1).
(3) Any person designated by a sewerage undertaker under paragraph (1) for the purpose of exercising any power under this Article for the purposes of Chapter III of Part VI may, on any occasion on which he so exercises that power in relation to any premises, obtain and take away any sample of any trade effluent or any other liquid or substance which is passing (either directly or through a drain or private sewer) from those premises into any of the undertaker’s public sewers.
(4) The power by virtue of paragraph (1) of a person designated under that paragraph to enter any premises shall include power to install and keep monitoring or other apparatus on the premises for the purpose of obtaining the information on which any such matter as is mentioned in sub-paragraph (a) or (b) of that paragraph may be ascertained.
(5) In this Article “trade effluent” has the same meanings as in Chapter III of Part VI; and, accordingly, Article 198 shall have effect for the purposes of this Article as it has effect for the purposes of that Chapter.