17. In paragraph 1 of Part I of Schedule 3 (requirements for spring water and drinking water including prescribed concentrations or values of parameters)—
(a)for sub-paragraph (a), there shall be substituted the following sub-paragraphs—
“(a)the water does not contain—
(i)any micro-organism (other than a parameter) or parasite, or
(ii)any property, element or substance (other than a parameter),
at a concentration or value which would constitute a potential danger to human health;
(aA)the water does not contain any substance (whether or not a parameter) at a concentration or value which, in conjunction with any other property, element, substance or organism it contains (whether or not a parameter), would constitute a potential danger to human health;”;
(b)for sub-paragraph (b), there shall be substituted the following sub-paragraph—
“(b)the water does not contain concentrations or values of any of the parameters listed in Tables A to D in Part II of this Schedule in excess of the prescribed concentrations or values; and”; and
(c)in sub-paragraph (c), the words from “and its alkalinity” to the end shall be deleted.