Smart Water

With more than 3 million water meters deployed around the city and only about 170 meter-readers working in Hong Kong’s Water Supplies Department (WSD) – the traditional method of physically checking and recording water consumption is challenging. Currently, these employees physically check and record water consumption, once a month for non-domestic customers with large water consumption and once every four months for the remaining customers.
ASTRI is developing a smart water metering communication standard for Hong Kong, adapting to the constraints of the local environment, that just like mobile phones, can be used anywhere where there is LoRa network coverage.

The new standard could ensure a consistent data format and communication protocol to be adopted by different smart meter suppliers in WSD’s future supply contracts; and could facilitate data collection from these smart meters (which could be from different suppliers) to be deployed to some 430,000 households in the new development areas of the city over the next decade. With automatic leak detection and consumption pattern identification readily available to WSD as well as the households, smart water meters are expected to have a considerable and positive impact on the environment, saving about 1.68 million cubic metres of water in 10 years due to change in consumers’ water using habits.

WSD Senior Electrical Engineer, Mr M. K. Wong, said that such significant water saving will bring financial and environmental benefits to Hong Kong as a smart city of the future. ASTRI, meanwhile, is excited about this technology’s potential to make a huge splash.

Water Meter Experiment (left),
LoRa Water Meter Interface Unit (right)