17.—(1) Every water undertaker or supplementary licensee must identify every point from which it abstracts water for supply for regulation 4(1) purposes.
(2) At every abstraction point, the relevant water undertaker or supplementary licensee must take, or cause to be taken, such samples, and analyse, or cause to be analysed, those samples for such properties, organisms and substances as it considers necessary in order to comply with regulations 26 to 28.
(3) In relation to any abstraction point, the Welsh Ministers may, by notice served on the relevant water undertaker or supplementary licensee, require the relevant water undertaker or supplementary licensee—
(a)to take, or cause to be taken, such numbers of samples of water per year as may be specified; and
(b)to analyse, or cause to be analysed, those samples for such concentrations or values of such properties, organisms and substances, and at such frequencies, as may be specified.
(4) The Welsh Ministers may, by notice served on the relevant water undertaker or supplementary licensee, revoke or amend a notice served under paragraph (3).
(5) Every analysis required under—
(a)paragraph (2), in relation to every body of surface water which provides more than 100 cubic metres of water per day as an average, must be carried out at no less than the following frequencies—
(i)4 per year, where the population served by the body of surface water is less than 10,000 people;
(ii)8 per year, where the population so served is 10,000 to 30,000 people; and
(iii)12 per year, where the population so served is greater than 30,000 people; and
(b)paragraphs (2) and (3) must be in accordance with such relevant standards as may be specified by the Welsh Ministers by notice served on the water undertaker or supplementary licensee.
(6) For the purposes of—
(a)paragraphs (2) and (3)—
“abstraction point” means an abstraction point identified under paragraph (1); and
“relevant water undertaker or supplementary licensee” means the water undertaker or supplementary licensee which identified the abstraction point;
(b)paragraph (3), “specified” means specified in the notice served under that paragraph; and
(c)paragraph (5), “body of surface water” has the meaning given in Directive 2000/60/EC of the European Parliament and of the Council establishing a framework for Community action in the field of water policy.