Wholesomeness
4. Water supplied to any premises is to be regarded as wholesome if all the following conditions are met—
(a)it does not contain any micro-organism, parasite or substance, alone or in conjunction with any other substance, at a concentration or value that would constitute a potential danger to human health;
(b)it complies with the concentrations or values specified in Part 1 of Schedule 1; and
(c)in the water:
