The data obtained from the study of water quality in two sites was compared with the water quality guideline to protect the aquatic life (i.e., ANZECC, AMEQC, HKEPD, TEPA, and CEPA). Water quality guideline is very useful to screen sediment contamination by comparing water contaminant concentration with the corresponding quality guideline, provide useful tools for screening sediment chemical data to identify pollutants of concern and prioritise problem sites. According to the results, the water quality in VH was similar to the date pressed in the marine water quality report issued by HKEPD (2013). Before the sewage diversion, nutrients were an impact issue in Victoria Harbour. Algal bloom in these waters was occurred throughout the year. Starting in December 2002,