2. Treatment of natural mineral waters and spring waters with ozone–enriched air shall not—
(a)modify the physico–chemical composition of the water in terms of its characteristic constituents; or
(b)leave residues in the water which could pose a risk to public health, or, in the case of the substances listed in column 1 of the Table below, above the levels specified in column 2 of that Table:
Table
Column 1 Treatment residue | Column 2 Maximum limit (µg/l) |
|---|---|
| Dissolved ozone | 50 |
| Bromate | 3 |
| Bromoform | 1 |