# The Natural Mineral Water, Spring Water and Bottled Drinking Water Regulations 1999, Paragraph 1


Water satisfies the requirements of this Schedule if–
(a) the water does not contain any property, element, organism, or substance–
(i) (other than a parameter) at a concentration or value which would be injurious to health;
(ii) (whether or not a parameter) at a concentration or value which in conjunction with any other property, element, organism or substance it contains (whether or not a parameter) would be injurious to health;
(b) the water does not contain–
(i) 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;
(ii) concentrations of trihalomethanes (being the aggregate of the concentrations of trichloromethane, dichlorobromomethane, dibromochloromethane and tribromomethane) in excess of 100μg/l; and
(c) in the case of water prepared from water which has been softened or desalinated, its hardness is not below a minimum concentration of 60 mg Ca/l and its alkalinity is not below a minimum concentration of 30 mg HCO3/l.

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Source: https://www.legislation.gov.uk/uksi/1999/1540/schedule/3/paragraph/1 (the official version)
Page: https://openlegislation.uk/natural-mineral-water-spring-water-and-bottled-drinking-water-regulations-1999/schedule-3/paragraph-1
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.