| General |
Hong Kong Population
(figure from the Census and Statistics Department) |
7.50 million |
| Population Served |
7.50 million |
| Percentage of Population Served |
over 99.99% |
| Number of Accounts (as at 31 March 2026) |
| Domestic |
3,016,050 |
| Trade |
264,357 |
| Government |
14,265 |
| Flushing |
42,446 |
| Miscellaneous |
2,448 |
| Total : |
3,339,566 |
Waterworks Installations
| Installations (as at 31 March 2026) |
Nos. |
Total storage capacity /
Total installed capacity |
| Impounding Reservoirs |
17 |
586.05 Mm3 |
| Water Treatment Works |
18 |
4.51 Mm3/day |
| Desalination Plant |
1 |
0.14 Mm3/day |
| Water Reclamation Plant |
2 |
0.075 Mm3/day |
| Fresh Water Pumping Stations / Houses |
152 |
32.34 Mm3/day |
| Salt Water Pumping Stations / Houses |
35 |
2.13 Mm3/day |
| Fresh Water and Salt Water Pumping Stations / Houses (Combined) |
7 |
0.30 Mm3/day |
| Recycled Water Pumping Stations / Houses |
1 |
0.07 Mm3/day |
| Fresh Water Service Reservoirs |
179 |
4.40 Mm3 |
| Salt Water Service Reservoirs |
56 |
0.26 Mm3 |
| Recycled Water Service Reservoirs |
1 |
0.024 Mm3 |
(Mm3 - million cubic metre)
| Water Mains and Tunnel (as at 31 March 2026) |
Total Length (km) |
| Fresh Water Mains (20mm - 2,400mm diameter) |
6,824 |
| Salt Water Mains (20mm - 1,200mm diameter) |
1,714 |
| Reclaimed Water Mains (20mm - 700mm diameter) |
15 |
| Catchwater |
120 |
| Water Tunnel |
199 |
| Major Installations (as at 31 March 2026) |
| 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 (as at 31 March 2026) |
Output Capacity (Mm3/day) |
| Sha Tin |
0.54 |
| Pak Kong |
0.80 |
| Tai Po |
0.80 |
| Tuen Mun |
0.37 |
| Au Tau |
0.33 |
| Tsuen Wan |
0.32 |
| Yau Kom Tau |
0.25 |
| Ma On Shan |
0.23 |
| Ngau Tam Mei |
0.23 |
| Desalination Plant (as at 31 March 2026) |
Output Capacity (Mm3/day) |
| Tseung Kwan O |
0.14 |
| Water Reclamation Plant (as at 31 March 2026) |
Output Capacity (Mm3/day) |
| Shek Wu Hui |
0.073 |
| Hong Kong-Zhuhai-Macao Bridge Hong Kong Port |
0.0016 |
| Pumping Stations (as at 31 March 2026) |
Installed capacity (Mm3/day) |
| Muk Wu No.2 & No. 3 |
5.89 |
| Tai Po Tau, Tai Po Tau No.2, No.3 & No.4 |
4.12 |
| Tai Mei Tuk & Tai Mei Tuk No.2 |
2.17 |
| Harbour Island |
2.05 |
| Lung Cheung Road - Mechanical & Electrical Workshop (gross floor area) (as at March 2026) |
16,300 m2 |