The water quality for this period complied with the national standard set out for Type II waters (applicable to the abstraction for human consumption in first class protection area) in the "Environmental Quality Standards for Surface Water (GB3838-2002)" continuing to indicate the significant improvement in the quality of Dongjiang Water as received in Hong Kong after completion of the dedicated aqueduct system.
| Part A | - | Comparison with GB3838-2002 Type II Standard for Surface Water  |
| Part B | - | Parameters illustrating the effect of the Dong-Shen dedicated aqueduct on water quality |
The water quality for this period complied with the World Health Organization's Guidelines for Drinking-water Quality.
| Part A | - | Microbiological quality |
| Part B | - | Chemicals of health significance as described by World Health Organization's Guidelines for Drinking-water Quality (WHO 2008) |
| Part C | - | Other parameters |