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EMSD announces latest sampling results for legionella at fresh water cooling towers

     The Electrical and Mechanical Services Department (EMSD) today (May 9) announced that the department tested 56 water samples collected from cooling towers in 49 buildings in its routine inspections in April this year. None of them were found to have a total legionella count at or above the upper threshold, which is 1 000 colony-forming units per millilitre. The latest statistics are set out in the Annex.

     The EMSD also announced that none of the samples were found to have a total legionella count at or above the upper threshold in the past three months. The EMSD publishes the latest statistics of the above information on a half-monthly basis on its website (

     The EMSD reminds the owners of fresh water cooling towers that they have the responsibility to design, operate and maintain cooling towers properly. They should arrange regular inspections, timely maintenance and periodic testing of the water quality in their cooling towers in accordance with the Code of Practice for Water-cooled Air Conditioning Systems issued by the department to prevent the proliferation of legionella.

Ends/Monday, May 9, 2016
Issued at HKT 14:00


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