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Waterworks Data

General
Hong Kong Population
(figure from the Census and Statistics Department)
7.54 million
Population Served 7.54 million
Percentage of Population Served over 99.99%
Number of Accounts (as at 31 March 2024)
Domestic 2,911,619
Trade 260,692
Government 13,908
Flushing 41,426
Miscellaneous 2,453
Total : 3,230,098

Waterworks Installations

Installations (as at 31 March 2024) Nos. Total storage capacity /
Total installed capacity
Impounding Reservoirs 17 586.05 Mm3
Water Treatment Works 18 4.51 Mm3/day
Fresh Water Pumping Stations / Houses 149 32.08 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
Fresh Water Service Reservoirs 177 4.35 Mm3
Salt Water Service Reservoirs 55 0.26 Mm3

(Mm3 - million cubic metre)

Water Mains and Tunnel (as at 31 March 2024) Total Length (km)
Fresh Water Mains (20mm - 2,400mm diameter) 6,768
Salt Water Mains (20mm - 1,200mm diameter) 1,686
Reclaimed Water Mains (20mm - 700mm diameter) 11
Catchwater 120
Water Tunnel 199

Major Installations (as at 31 March 2024)
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 2024) 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
Pumping Stations (as at 31 March 2024) 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 2024) 16,300 m2