| Determinants | Existing or new determinant | Frequency | Regulated by Government Gazette No. 39943 |
| Magnesium and dissolved cyanide | New | Monthly | Yes |
| Escherichia coli and coliforms | Replace faecal coliform monitoring | Monthly | Yes |
| Microcystin, geosmin & 2-methylisoborneol | New | Dependent on algal blooms or taste and odor episodes | No |
| Gross alpha/beta activity | New | Dependent on uranium concentrations | No |