The Buildings Department and the Environmental Protection Department are taking action to stop sewage from homes in Hung Hom district from flowing into the sea, am730 reported Monday.
People in the area have complained about a stink along the waterfront promenade.
The Hung Hom promenade and extension of Tsim Sha Tsui promenade, which opened in September 2011, was designed to offer the public and tourists views of Victoria Harbour.
However, neighboring residents and exercisers have been saying an intolerably bad smell comes from the water on an ebb tide, normally at around 8 a.m. and 8 p.m.
Investigations by the departments and queries made to residents by lawmakers revealed that the stink results from the connection of the sewers of 29 buildings to stormwater drains, contrary to regulations.
The buildings are located on Gillies Avenue South, Whampoa Street, Baker Street and Wuhu Street.
The Buildings Department has issued orders to owners of five buildings to comply with the rules.
The Environmental Protection Department said it has taken care of 17 cases and is following up with four others.
It said the wrong connections might have occurred during sewerage maintenance work.
Blue-green Ocean Movement, a local environmental protection group, went to Hung Hom Ferry Pier to test the water quality Sunday.
It found that the level of dissolved oxygen falls below the required standard, showing that the pollution is serious.
Meanwhile, tonnes of dead fish were found in the harbor beside the Kai Tak Cruise Terminal after typhoon Linfa passed by on Friday.
The report quoted one expert as saying after a field investigation that the fact that the oxygen contained in the water is far lower than normal levels might be the main reason the fish died, and the source could be ballast water illegally discharged from cruise ships.
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