Telephone Directory of the Government of the HKSAR And Related Organisations

This is a website where you can search for most of the telephone numbers of officers and hotlines in respect of government bureaux / departments and related organisations.

Last Updated: 30/11/2025

Drainage Services Department
Sewage Services Branch
System Management Division
Operation Section

Operation Section

Office Tel	3965 8740
Fax	3104 6430

Operation Section
Office Tel 3965 8740	Fax 3104 6430

Full Name	Post Title	Office Tel	Email
Full Name Mr. WONG Yun Cheong, Thomas	Post Title Sr Chemist/Sewage Services	Office Tel 3965 8714	thomaswong@dsd.gov.hk
Email thomaswong@dsd.gov.hk
Full Name (Vacant)	Post Title Chemist/Sewage Services 1	Office Tel 3965 8740
Email
Full Name Ms. LAW Yuen Chi, Chermian	Post Title Chemist/Sewage Services 2	Office Tel 3965 8738	yclaw@dsd.gov.hk
Email yclaw@dsd.gov.hk
Full Name Ms. YIP Ka Lai, Lillian	Post Title Chemist/Sewage Services 3	Office Tel 3965 8737	klyip@dsd.gov.hk
Email klyip@dsd.gov.hk
Full Name Ms. CHAN Ka Yin	Post Title Ag. PS to SE/SS & SC/SS	Office Tel 3965 8745	kychan07@dsd.gov.hk
Email kychan07@dsd.gov.hk

Remarks:

1.For those calling from places outside Hong Kong, please dial the area code "852" before the telephone number (not applicable to overseas offices).
2.Click the name of officer/enquiry for further information.
3.All data on this website are provided and updated by respective bureaux / departments and related organisations.