Water Reduction Strategy and Performance
In water-scarce Singapore, water management is vital, considering core activities during our operations are water-intensive and highly dependent on a reliable supply of water. CDL takes a holistic approach towards water management to maintain and enhance the efficiency, resilience, desirability and long-term value of our assets and developments. Responsible water management practices allow us to deliver value to our homeowners and tenants through water and cost savings.
CDL draws both potable and NEWater (for non-potable use) from PUB’s utility network and utilises the water for building operations and maintenance activities in our managed buildings. Most of the water consumption in commercial buildings is for cooling towers, toilets, pantries, water features, irrigation and washing activities. In our construction sites, potable water is used mostly by our contractors for sanitation purposes.
|•||All potable water withdrawal comes from a single third-party water source supplied by PUB. The breakdown of water sources is based on PUB’s Our Water, Our Future report.|
|•||Based on PUB’s Our Water, Our Future report, all potable water and NEWater are categorised as freshwater with Total Dissolved Solids levels of ≤1,000 mg/L.|
|•||Based on WRI’s Technical Note on Aqueduct Projected Water Stress Country Rankings, the entire area of Singapore is identified to be of high physical risk. The physical risk tool identifies areas of concern exposed to water risks (e.g. droughts or floods) that may impact short- or long-term water availability. As such, all water withdrawal is from water stress areas.|
Lifecycle Approach of Water Management
As part of our robust water management strategy, CDL focuses on effective management of water quality and usage across every project’s development and management lifecycle stages. For instance, Amber Park, a BCA Green Mark GoldPLUS development, features an automatic water-efficient irrigation system that harvests rainwater for landscape irrigation. This, along with other water-saving features, will achieve an estimated reduction in 110,000 m3 of potable water usage per annum.
|Stage in Project Lifecycle||Key Water Management Initiatives||Benefits|
|Design||Incorporate water-efficient fittings and fixtures||Reduce water usage|
|Use recycled water and drought-resistant plants for landscaping|
|Harvest rainwater for landscape irrigation|
|Incorporate PUB’s Active, Beautiful, Clean (ABC) Waters Design Guidelines to implement environmentally sustainable features||Retain and control stormwater runoff to minimise flooding risk; treat stormwater runoff to reduce impurities discharged into water systems|
|Construction||Install self-closing taps where applicable||Reduce water usage|
|Collect rainwater for washing wheels of vehicles on-site|
|Install water recycling systems for site cleaning|
|Install silty water treatment system||Prevent silty water from being discharged into water systems|
|Operation of Assets||Conduct routine checks on pipes, taps, urinal, and WC flush systems||Prevent water wastage due to leaks or over-sensitive sensors|
|Holistically incorporate water-efficient fixtures and fittings, e.g. flow regulators, self-closing taps||Reduce water usage|
|Use NEWater for operations that do not require potable water||Reduce reliance on potable water|
Water Reduction Initiatives
CDL reviews our utility bills annually to identify buildings that are high in water usage. Monthly water consumption by our key business units is closely tracked to detect any spikes in water usage that require attention. To reduce reliance on potable water, CDL uses NEWater wherever possible, for example, for operations that do not require potable water.
To date, 12 out of 13 CDL managed buildings (92% of our building portfolio) have been certified as “Water-Efficient Buildings” by PUB for outstanding water conservation efforts. Recognising that water conservation is a shared responsibility, CDL engages our tenants and homebuyers through initiatives such as our Green Lease Partnership Programme and Green Living Guide. These initiatives aim to promote good water conservation practices that complement CDL’s water-efficient design and features in our buildings.
Since the inception of PUB’s ABC Waters certification in 2010, CDL has attained the certification for eight developments. Our H2O Residences was the first private development to be ABC Waters-certified due to its seamless integration with surrounding water bodies and park.
The Tapestry, completed in 2021, scored wins at the EdgeProp Singapore Excellence Awards 2021 for its nature-inspired design. Every apartment is fitted with water-efficient and energy-efficient accessories with a rainwater discharge system at the roof. At our commercial properties, rainwater harvesting is carried out for landscaping use to conserve water. In 2021, for example, City Square Mall’s metered rainwater harvesting system collected a total of 813.9 m3 of water.
Key Water Conservation Initiatives in 2021
|Water conserved from construction sites||Property Development||70,236 m3 equivalent to almost $192,000* in savings|
|Use of NEWater instead of potable water||Asset Management||Use of 52,589 m3 of NEWater, equivalent to 23.4% of the total water used and more than $21,500** saved as compared to using potable water|
|*||Conserved water quantity is estimated using the total water use intensity for completed projects in the reporting year against the water use intensity target of 1.75m3/m2.|
|**||Water tariffs at $2.74 per m3 (inclusive of tariff, water conservation tax and waterborne fee). NEWater tariffs at $2.33 per m3 (inclusive of tariff and waterborne fee). Figures are before GST. For the full list of water prices, please visit PUB’s website.|
Water Efficiency and Reduction Performance
Recognising that holistic water management enhances the long-term value of our assets and developments, we have continuously implemented water conservation initiatives and tracked our water performance since 2007. CDL achieved the 2021 CDP A List in water security. This marks the third year of this recognition and affirms CDL’s robust water management strategy. To maintain our strong track record, we regularly review the water management plans for all our properties and introduce initiatives where areas for improvement are identified.
In 2021, water intensity remained relatively low compared to pre-COVID levels in 2019, for our managed buildings and corporate office. For construction sites, water use intensity remained relatively consistent compared to 2020.
Total Water Usage of CDL’s Operations in Singapore (m3)
|•||Water used and water use intensity are for potable water only. Industrial grade NEWater usage is not included in the amount of water used.|
|•||Total amount of water withdrawn is the same as total amount of water discharged into third-party water (i.e. PUB sewers) with negligible amounts of water consumed. Hence, the total amount of water used is reported here.|
Water Usage and Water Use Intensity of CDL’s Operations in Singapore
|CDL Corporate Office|
|•||Estimated numbers were used for CDL Corporate Office in 2018 and January to March 2019, due to the installation of water meters in our corporate office, having relocated from City House to Republic Plaza during this period. Water consumption data from April 2019 was taken from installed water meters. Figures for 2018 and 2019 have been restated to include water consumption from corporate office pantries.|
|CDL Managed Buildings|
|•||Water used refers to potable water only. Industrial grade NEWater is not included in the amount of water used.|
|•||Water use figures have been restated to remove corporate office water usage quantities as they are reported separately in this report.|
|CDL Construction Sites|
|•||Water use intensity for on-site dormitories is not included.|
Total Water Usage of CDL’s Core Operations in Singapore and Six Key Subsidiaries (m3)
|•||CBM and City Serviced Offices are not represented here as they are tenants within a building and do not have separate meters to track respective water usage within their facilities.|
|#||Le Grove Serviced Residences was closed for renovation from December 2016 to July 2018.|
|•||Figures for CDL have been restated to include water consumption from corporate office pantries.|