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Scope and Objective

Hong Kong Quality Assurance Agency (“HKQAA”) conducted an independent verification of the Drainage Services Department Sustainability Report 2015-16 (hereinafter referred to as “the Report”) of Drainage Services Department (hereinafter referred to as “DSD”). The Report states DSD’s commitments and progress on sustainability for the period from 1st April 2015 to 31st March 2016.

The aim of this verification was to provide reasonable assurance on the completeness and accuracy of the information stated in the Report which was prepared in accordance with the Core Option of the Global Reporting Initiative (GRI) G4 Sustainability Reporting Guidelines.


The verification process included reviewing of relevant documentation, interviewing responsible personnel with accountability for preparing the reporting contents and verifying the selected representative sample of data and information. Raw data and supporting evidence of the selected samples were thoroughly examined.


HKQAA was not involved in collecting and calculating the reporting data, or in the development of the Report. HKQAA’s activities are independent from DSD.


The results of our verification provided confidence in the systems and processes used by DSD for managing and reporting sustainability performance information. It is confirmed that the contents stated in of the Report are accurate and reliable. The requirements, aspects and key performance indicators specified in the G4 Sustainability Reporting Guidelines have been adequately addressed. The information presented in the reporting contents articulate a balanced account of DSD’s sustainability performance during the reporting period.

DSD has established effective mechanism to proactively engage with its stakeholders. Feedbacks from stakeholders were taken into account very seriously for incorporating into the company’s sustainability strategies and for preparing the reporting contents. Also, DSD has been responsive to stakeholder concerns and expectations with a number of examples shown in the Report. Overall, the material sustainability issues of DSD’s commitments, progress and achievement were included in the Report.

Signed on behalf of Hong Kong Quality Assurance Agency
Jorine Tam
Jorine Tam
Director, Corporate Business
December 2016