4. Where such particulars have been so given, the district council shall assess them and shall recognise the water to which those particulars relate as natural mineral water if it is satisfied that—
(a)the water is natural mineral water which complies with paragraph 3 of Section I of Annex I; and
(b)the characteristics of the water have been assessed in accordance with —
(i)the points numbered 1 to 4 set out in paragraph 2(a) of Section I of Annex I,
(ii)the requirements and criteria listed in Part 3 of this Schedule, and
(iii)recognised scientific methods.