Residents at Grand Promenade in Sai Wan Ho discovered unknown black sediments in their drinking water recently, with the Water Supplies Department (WSD) confirming late Wednesday that the particles are bitumen.
WSD emphasized that the water samples collected from both the sump and the roof drinking water tanks for testing indicated that the water quality complies with established standards. Furthermore, personnel have been assigned to flush the water tanks as well as the water meters at the private housing estate.
It has also installed additional filtering facilities that can block impurities in Grand Promenade.
The Department said it is investigating whether the sediments originated from the upstream of the water supply system, due to the pumping facilities restarting after the public plumbing works.
A water wagon has been deployed, while temporary water tanks have also been set up at the communal open area within Grand Promenade for the affected residents.
Some residents stated that the sediment also affects the thermostatic function of the water heater, and they have to purchase bottled water for daily usage.
The property services office of Grand Promenade issued a notice to residents on Tuesday (Jul 8), stating that it had received reports earlier regarding fine black particles being found in the drinking water.
The notice also stated that the WSD will carry out pipe improvement works on Tai Cheong Street in Sai Wan Ho on Thursday, and the drinking water supply to households will not be affected.
The incident came just a month after the black particles were found in tap water at Fanling’s Queen’s Hill Estate and Shan Lai Court, in which WSD confirmed that the impurities are bitumen mixed with resin.
(Khan Heeba Lazmi and Natasha Ng)
(Updated at 9.30pm)
Read more related articles:
Black particles in HK tap water found to be asphalt and resins: Gov't
