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Fresh Water (Plus)

The Latest Arrangement for New and Renewal Applications
under Quality Water Supply Scheme for Buildings - Fresh Water (Plus)

Enhancement of the Scheme

To strengthen the management on water quality, the Water Supplies Department (WSD) has committed to promoting Water Safety Plan for Buildings (WSPB) to owners and property management agents on how to develop and implement WSPB in accordance with the recommendations of the World Health Organisation. In consultation with the Advisory Committee on Water Supplies, the WSD launched a new voluntary scheme by integrating WSPB with the existing "Quality Water Supply Scheme for Buildings – Fresh Water (Plus)" (Q-Plus) on 6 November 2017.

Arrangement in Handling Applications

Following the launch of the new scheme on 6 November 2017, we will suspend handling new and renewal applications for Q-Plus with effect from 1 February 2018. Upon launching of the new scheme, we will invite and encourage all buildings and current certificate holders to join. Buildings complying with the requirements as well as the terms and conditions of the new scheme will be awarded certificates with appropriate grade according to the current grading system.

To maintain good quality of water at the consumer taps and minimise the number of failures in the inside service, owners and property management agents are encouraged to continue with the good maintenance practices such as regular inspection of plumbing systems and cleansing of water tanks of their buildings etc.


The treated fresh water provided by the Water Supplies Department (WSD) complies fully with World Health Organisation's (WHO's) "Guidelines for Drinking-water Quality". Well-maintained water plumbing systems are keys to a healthy environment for water consumption and good quality water to consumers. To ensure good quality of water at the taps and avoid/minimise failures in water supply, building/property owners, building management agents and customers should properly maintain their internal plumbing systems within the areas under their jurisdiction1. With the endorsement of the Advisory Committee on the Quality of Water Supplies2, the WSD launched "Fresh Water Plumbing Quality Maintenance Recognition Scheme" in July 2002. The said scheme was re-titled "Quality Water Recognition Scheme for Buildings" and "Quality Water Supply Scheme for Buildings - Fresh Water" in January 2008 and March 2015 respectively to signify enhancement features.

In view of the recent incidents of excessive lead in drinking water found in isolated public rental housing estates and the aspirations of the general public for enhanced water quality assurance at consumer taps, there is a need to enhance the above scheme and in particular the protocols for water quality examination under the above scheme. With the endorsement of ACRQWS, the WSD launched the enhancement measures of the scheme in December 2015 to include testing of heavy metals and to expand scope of water sampling, and the scheme is re-titled "Quality Water Supply Scheme for Buildings - Fresh Water (Plus)" (the Scheme).

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  1. For private residential buildings, the area under jurisdiction of the property management agents refers to the communal area up to the individual households' water meters, whereas the remaining inside service up to and within individual households is the area under the jurisdiction of property owners/customers. For public rental buildings, the area under jurisdiction of property management agents refers to the communal area up to and within individual households.
  2. The predecessor of the then Advisory Committee on Water Resources and Quality of Water Supplies (ACRQWS) which was retitled Advisory Committee on Water Supplies (ACWS) in April 2016.
  3. Alternatively, the applicant may select to provide the following information/documents that indicate the buildings under application are administered by a robust maintenance system (instead of filling in Part C and Table 2 of Annex I to Form A and submitting the document under item 4 of Part E of Form A) for the WSD's consideration:

  4. For communal area, samples shall be collected at communal system/cold water tap without water filter installed. For non-communal area, i.e. the internal plumbing system of individual household, samples shall be taken at the kitchen cold water tap without water filter installed.
  5. The prescribed sampling sizes apply to the general majority of residential buildings in Hong Kong and serves to encourage household's participation in the enhanced Scheme. Buildings with small no. of households but large proportion of participation will be handled on a case-by-case basis. The applicant is advised to select different households for sampling in subsequent renewal applications.

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