| General | |
| Hong Kong Resident Population (estimated as at December 2010) |
7,097,600 |
| Population Served | 7,091,600 |
| Percentage of Population Served | 99.9% |
| Number of Accounts (as at 31 March 2011) | |
| Domestic | 2,493,400 |
| Trade | 235,500 |
| Government | 12,200 |
| Flushing | 28,900 |
| Miscellaneous | 2,000 |
| Total : | 2,772,000 |
| Waterworks Installations (as at 31 March 2011) | ||
| Installations | Nos. | Total storage capacity / Total installed capacity |
| Impounding Reservoirs | 17 | 586 Mm3 |
| Water Treatment Works | 21 | 4.87 Mm3/day |
| Fresh Water Pumping Stations / Houses | 150 | 31.19 Mm3/day |
| Salt Water Pumping Stations / Houses | 30 | 1.84 Mm3/day |
| Fresh Water and Salt Water Pumping Stations / Houses (Combined) | 7 | 0.28 Mm3/day |
| Fresh Water Service Reservoirs | 167 | 4.17 Mm3 |
| Salt Water Service Reservoirs | 48 | 0.23 Mm3 |
| Water Mains and Tunnel | Total Length (km) |
| Fresh Water Mains (20mm - 2,400mm diameter) | 6,386* |
| Salt Water Mains (20mm - 1,200mm diameter) | 1,638* |
| Catchwater | 120 |
| Water Tunnel | 199 |
*water mains laid in private streets are included
| Major Installations | |
| Impounding Reservoirs | Storage capacity (Mm3) |
| High Island | 281.12 |
| Plover Cove | 229.73 |
| Shek Pik | 24.46 |
| Tai Lam Chung | 20.49 |
| Water Treatment Works | Output Capacity (Mm3/day) |
| Sha Tin | 1.23 |
| Pak Kong | 0.80 |
| Au Tau | 0.33 |
| Tsuen Wan | 0.32 |
| Tuen Mun | 0.37 |
| Tai Po | 0.25 |
| Yau Kom Tau | 0.25 |
| Ma On Shan | 0.23 |
| Ngau Tam Mei | 0.23 |
| Pumping Stations | Installed capacity (Mm3/day) |
| Muk Wu No.2 & No. 3 | 5.89 |
| Tai Po Tau, Tai Po Tau No.2, No.3 & No.4 | 3.73 |
| Tai Mei Tuk & Tai Mei Tuk No.2 | 2.17 |
| Harbour Island | 2.05 |
| Lung Cheung Road - Mechanical & Electrical Workshop (gross floor area) | 16,300 m2 |