1. A person must not carry out an ozone-enriched air treatment on natural mineral water or water intended to be bottled and labelled as “spring water” “unless—
(a)it is for the purpose of separating compounds of iron, manganese, sulphur and arsenic from water in which they occur naturally at source;
(b)prior to treatment the requirements of paragraphs 3, 4 and 5 of Schedule 4 are satisfied; and
(c)the treatment does not have a disinfectant action.