Making Conservation Count

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Annual Report 2012/13 Living the Legacy; Exploring New Frontiers
Making Conservation Count
Making Conservation Count
When it comes to controlling the demand for water, conservation is a key
tool. We exercise this tool in many ways – along the supply pipeline to
stem water loss through system leaks and by using community
conservation that calls for contributions from consumers.
WATER LOSS MANAGEMENT INITIATIVES
Electromagnetic flowmeters
Leak detection
The Department applies an extensive range of water leak detection methods as well as a suite of district-wide monitoring and pressure management technologies to reduce water loss along the distribution system. Minimum night flow tests, step tests, sounding and visual inspections are carried out on a routine basis to detect and locate leaks. New leak noise correlating equipment with a refined algorithm and improved data analysis locates leak points, particularly in large diameter pipes. This equipment has strengthened the ability of detection teams to quickly source water leaks in trunk mains.
We have continued to set up electromagnetic flowmeters and noise loggers along water mains in the district metering areas to monitor performance, identify leaks and source other irregularities enabling rapid remedial action.
In 12 of Hong Kong's 17 major supply zones, we have either completed or commenced the installation of pressure management equipment and instrumentation to lower water pressure, reduce pipe failures and control water losses. Investigative studies are underway in the five outstanding zones. These should be completed by the middle of 2014.
PROMOTING WATER EFFICIENT APPLIANCES

The Water Efficiency Labelling Scheme (WELS) was introduced in 2009 to encourage consumers to use appliances and equipment that conserve water. The scheme began with labels for water efficient showers for bathing and has since been extended to include labels that identify water efficient taps, washing machines and urinal equipment.

Private developers have been encouraged to prioritise the use of these devices and other water conservation features in both new developments and buildings that are being renovated or retrofitted. The Department has worked closely with the Hong Kong Green Building Council and the Building Environmental Assessment Method Plus Scheme to formally recognise designs that contain conservation features. The number of credits awarded are determined by the annual water saving and water conservation features adopted. Our own programme of retrofitting plumbing fixtures with water saving devices in existing government buildings and schools has continued over the past year.

Promoting Water Efficient Appliances Photo
RAISING PUBLIC AWARENESS
Raising Public Awareness Photo 1Raising Public Awareness Photo 2

Last year we launched a domestic water consumption study that involved more than 1 000 homes. The study results gave us a clearer understanding of consumption habits in households and the effectiveness of our water conservation programmes. Despite a population growth of 100 000 people since 2010, the demand for fresh water remains at the same level. New conservation awareness initiatives launched over the past year have been based on survey findings.

We have established the temporary Water Resources Education Centre at our offices in Mong Kok, primarily to foster interest and understanding about water amongst students. The centre is also open to the general public and features exhibitions, live demonstrations and interactive games, all of which focus on the importance of water conservation. The Centre and its exhibits will move to a permanent location at our New Territories West regional office in Tin Shui Wai.

Open days at water treatment facilities during the year continued to help people understand the operational aspects of Hong Kong's supply system while travelling road shows to schools focused on the water cycle, water treatment options and the scarcity of water in parts of the world.

Publicity campaigns deliberately target students and school children, working on the principle that a youngster will take strong water conservation messages home to his or her family. Competitions are used in many of our campaigns and the main themes used over the past year for both adult and school competitions alike focused on practical water saving ideas that can be adopted for homes. Awards and citations were announced at ceremonies and winning entries were exhibited at the Sai Kung Jockey Club Town Hall, the Cheung Ching Estate Community Centre and the Leighton Hill Community Centre. Art and design also featured in a special cap design competition for schools. Students were invited to use the “Save Drops for Tomorrow” theme to decorate sports caps. More than 5 000 design submissions were received.

WATER EFFICIENCY REVIEW
The Department conducts water efficiency reviews to study water use in selected public facilities and develop best water efficiency practice guidelines for those facilities. The objective is to reduce overall water consumption. The review process began with our own installations and has been extended to the parks and swimming pools operated by the Leisure and Cultural Services Department. The process enables us to develop water saving guidelines without compromising the level of services provided to the public.
ILLEGAL WATER USE
It is an offence under the Waterworks Ordinance (WWO) to draw water illegally from the waterworks without a metered measurement by the Water Authority. The Department is responsible for administering the Ordinance and for taking enforcement action against infringements. Bulk meters have been installed at some existing large housing estates and in rural villages to monitor consumption and identify leakage and unauthorised use. Over the past 12 months, the Department's Prosecution Unit instituted 63 prosecutions against illegal use of water, resulting in convictions in all cases. We have also achieved all the following performance targets:
Actions Targets Achievement in 2012/13
Initiating an investigation after receiving a complaint on suspected unauthorised water consumption within 1 working day 80% Target Achieved
Conducting publicity campaigns and seminars for promotion of combating unauthorised water consumption 60 numbers Target Achieved
Conducting training sessions for officers of WSD and other departments on detecting and reporting unlawful water taking activities

15 numbers Target Achieved