Drainage Services Department

PWP No. 4454DS

Upgrading of Tolo Harbour Effluent Export Scheme

Project Scope

Construction of new sewerage infrastructures and reconstruction of some existing sewerage facilities of the Tolo Harbour Effluent Export Scheme (THEES) system, to cater for the projected sewage increase from the sewerage catchments

Major Improvements and Benefits

To upgrade the flow capacity of the THEES system so as to minimise effluent overflow from the Tai Po Sewage Treatment Works to the Tolo Harbour and mitigate the water quality impacts to Tolo Harbour due to the overflow effluent


AECOM Asia Company Limited

Controlling Division
Sewerage Projects Division
Sewerage and sewage treatment
Sha Tin; Tai Po
Under planning & design
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