Skip to main content

Drainage Services Department - Sustainability Report 2015-16

Key Statistics and Data

[Executive Summary] [Traditional Chinese Version] [Simplified Chinese Version] [Graphical Version] [Verification Statement] [Feedback Form] [Key Statistics and Data] [GRI Content Index] [Sitemap]

Home | Director’s Statement | About this Report | Highlights of the Year | Governance Approach | Our Core Responsibilities | Environmental Management | Stakeholder Engagement Activities | Joining Hands with Working Partners | Care for Our Staff | Meeting the Targets |

Environmental Performance

Energy Consumption

  Unit 2011-12 2012-13 2013-14 2014-15 2015-16
By DSD (G4-EN3)
Electricity GJ 860,400 864,000 890,244 947,646 988,740
(Million kWh) (239) (240) (247) (263) (275)
Gasoline
 Pool cars GJ Figures not available 1,046.19 877.48 893.14 824.63
(Litre) (31,862) (26,724) (27,048) (24,974)
 AM cars GJ 4,423.79 4,315.08 4,103.83 3,799.29 3,496.86
(Litre) (133,967) (130,675) (124,278) (115,060) (105,901)
Biogas1 Million m3 10 10 9 10 10
Average electricity consumption per unit volume of sewage treated (G4-EN5) kWh 0.2426 0.2388 0.2409 0.2591 0.2716
By DSD’s contractors (G4-EN4)
Electricity GJ Figures not available 137,952 23,328 97,798
(Million kWh) (38.32) (6.48) (27.17)
Gasoline GJ Figures not available 13,153 10,438 6,834
(Litre) (398,325) (316,101) (187,239)
Diesel GJ Figures not available 94,698 27,451 42,601
(Litre) (2,594,463) (752,080) (1,167,162)
(1) Generated from sewage treatment works

Greenhouse Gas (GHG) Emissions2

  Unit 2011-12 2012-13 2013-14 2014-15 2015-16
By DSD
Electricity purchased (Scope 2) (G4-EN16) Tonnes CO2 167,300 168,000 173,103 184,265 187,611
Gasoline combustion (Scope 1) (G4-EN15)
 Pool cars Tonnes CO2 Figures not available 75.19 63.07 63.83 65.90
 AM cars Tonnes CO2 316.16 308.39 336.53 271.54 249.93
By DSD’s contractors (G4-EN17)
Electricity purchased
(Scope 3)		 Tonnes CO2e Figures not available 26,824 4,536 19,016
Fuel consumption3
(Scope 3)		 Tonnes CO2e Figures not available 7,865 2,824 3,561
(2) GHG emission were calculated based on the Guidelines to Account for and Report on Greenhouse Gas Emissions and Removals for Buildings (Commercial, Residential or Institutional Purpose) in Hong Kong issued by the Environmental Protection Department and Electrical and Mechanical Services Department, HKSAR in February 2010.
(3) Generated from stationary combustion of diesel and mobile combustion of petrol i.e. vehicle consumption

Water Consumption

  Unit 2011-12 2012-13 2013-14 2014-15 2015-16
Freshwater consumption at flood prevention and sewage treatment facilities (G4-EN8) m3 2,092,627 2,078,729 1,709,925 2,085,560 2,050,936
Daily reclaimed water produced at STWs m3 1,349 1,194 1,151 1,565 1,512
Percentage of water reclaimed (G4-EN10) % 0.06 0.06 0.07 0.08 0.07

Sewage Treatment

  Unit 2011-12 2012-13 2013-14 2014-15 2015-16
Volume of sewage treated (G4-EN22) Million m3 981 1,001 1,021 1,011 1,007
Biochemical oxygen demand (BOD) removed from sewage Tonnes 107,057 100,677 109,579 115,681 124,569
Suspended solids (SS) removed from sewage 163,986 146,208 169,792 207,738 242,933
Nitrogen removed from sewage 5,541 5,310 6,067 6,820 6,551
Dewatered sludge removed from treated sewage 301,583 300,965 298,093 355,220 392,396
Screenings removed from treated sewage 12,157 13,334 13,663 15,817 15,172
Grits removed from treated sewage 4,388 4,741 4,903 5,429 6,631

Waste Management (G4-EN23)

  Unit 2011-12 2012-13 2013-14 2014-15 2015-16
Construction & demolition materials
C&D waste disposed of to landfills4 103 kg 7,863 8,525 6,093 6,420 6,998
C&D waste disposed of to public fill areas3 103 kg 854,293 765,105 584,018 238,662 235,735
Recyclable waste collected
Waste paper5 kg 18,679 11,983 13,284 28,918 19,360
Aluminium cans6 kg 12.94 14.15 14.76 30.70 19.73
Plastic bottles5 kg 28.53 29.92 27.78 43.70 20.71

Material consumption (G4-EN1)

  Unit 2011-12 2012-13 2013-14 2014-15 2015-16
By DSD
Total paper consumption Reams 11,870 11,054 10,520 10,012 9,608
 A4 paper Reams 11,400 10,696 10,080 9,452 9,357
 A3 paper Reams 470 358 440 470 251
Purchased paper with recycled content Reams(% of total paper purchased) 11,850
(99.8%)		 11,054
(100%)		 10,520
(100%)		 10,012
(100%)		 9,608
(100%)
Paper consumed per staff (By establishment) Reams 6.4 6.0 5.6 5.3 5.0
By DSD’s contractors
Rebar Tonnes Figures not available 7,165
Steel Tonnes 3,171
Bricks m3 30
Cement Tonnes 2,406
Cement Mortar m3 263
Concrete m3 50,616
Sand Tonnes 12,586
Stones Tonnes 9,617
Office paper Tonnes 27
(3) Generated from stationary combustion of diesel and mobile combustion of petrol i.e. vehicle consumption
(4) Construction and Demolition (C&D) waste includes metals, paper / cardboard packaging waste, chemical waste and other wastes such as general refuse.
(5) The amount of waste paper collected did not include those collected from project sites.
(6) The amount of aluminium cans and plastic bottles collected did not include those collected from the Kowloon Government Offices and Western Magistracy as the data were not available.

Greening

  Unit 2011-12 2012-13 2013-14 2014-15 2015-16
Trees Planted No. 2,500 1,996 2,169 570 2,300
Area of Green Roof Added m2 2,900 3,200 4,902 6,051 4,015
Electricity Generated from Biogas Million kWh 27 30 27 28 32

Social Performance

Staff

  Unit 2011-12 2012-13 2013-14 2014-15 2015-16
Staff Establishment No. 1,845 1,856 1,862 1,883 1,914
 Directorate No. 18 18 18 18 18
 Professional No. 283 292 292 306 310
 Technical & Site Supervisory No. 815 820 827 838 865
 General & Common Grades No. 525 525 526 524 526
 Model Scale I No. 204 201 199 197 195
Training
Training courses7 No. 256 278 5848 624 654
Trainees No. 6,978 9,848 6,574 7,159 8,019
Training hours received Hours 44,369 52,597 54,517 57,600 58,520
Average Training Hours per Staff Hours 24.0 28.3 31.6 31.8 33
Total expenditure on training 6 HK$ 4,306,329 4,756,800 3,856,237 4,201,000 3,585,011
Injury (G4-LA6)
Staff injury cases 9 No. 14 12 10 11 13
No. of sick leave for officers injured on duty Days 920.5 1,237 603 914.5 870.510

Staff Breakdown in 2015-16

  Unit By Strength
No. of Staff (G4-10) No. 1,761
By Post
Directorate % 1.2
Professional % 17.4
Technical & site supervisory % 48.0
General & common grades % 23.5
Model scale I % 10.1
By Employment Type (G4-10)
Full-time % 100
Part-time % 0
By Employment Contract (G4-10)
Permanent (male) % 83.8
Permanent (female) % 16.2
By Age
Age 20-29 % 7.7
Age 30-39 % 21.0
Age 40-49 % 24.1
Age 50-59 % 46.1
Age 60 or above % 1.2
By Ethnicity
Local % 100
Non-local % 0
By Gender
Male % 83.8
Female % 16.2
(6) The amount of aluminium cans and plastic bottles collected did not include those collected from the Kowloon Government Offices and Western Magistracy as the data were not available.
(7) It includes internal and external seminars/ workshops/ training courses/ visits.
(8) It includes training courses held by CSTDI and staff-initiated external courses.
(9) The definition of staff injury cases is the reported cases of occupational injuries, under Employee's Compensation Ordinance, resulting in death or incapacity for work over 3 days.
(10) The number includes sick leave days granted in 2014/15 but enjoyed in 2015/16.

Senior Management Breakdown in 2015-16

  Unit By Strength
No. of Staff No. 7
By Age
Age 20-29 % 0
Age 30-39 % 0
Age 40-49 % 14.3
Age 50-59 % 85.7
Age 60 or above % 0
By Ethnicity
Local % 100
Non-local % 0
By Gender
Male % 100
Female % 0

Training Hours Breakdown in 2015-1611

Type of Staff No. of Staff Training Hours Received(Hours) Training Hours Per Staff(Hours)
Directorate Staff 20 1,267 63.3
Professional Grade Staff 306 23,541 76.9
Technical, Site Supervisory, General Grade and Model Scale I Staff 1,445 33,712 23.3

Staff Turnover in 2015-1612

  Unit Male Female
Age 20-29 No. 0 0
Age 30-39 No. 1 0
Age 40-49 No. 0 0
Age 50-59 No. 4 4
Age 60 or above No. 52 5

New Employee Hires in 2015-1613

  Unit Male Female
No. of New Employee Hires No. 88 12
By Age
Age 20-29 No. 39 7
Age 30-39 No. 35 5
Age 40-49 No. 9 0
Age 50-59 No. 5 0
Age 60 or above No. 0 0

Accident Rate (G4-LA6)

  Unit 2011-12 2012-13 2013-14 2014-15 2015-16
Number of fatalities
No. of Fatalities No. 1 0 2 0 1
Construction and maintenance works carried out directly by DSD's staff No. 0 0 0 0 0
Construction and maintenance works undertaken by DSD's contractors No. 1 (Male) 0 2 (Male) 0 1 (Male)
Fatal accident rate per 100,000 man-hours
Construction and maintenance works carried out directly by DSD's staff14 - 0 0 0 0 0
Construction and maintenance works undertaken by DSD's contractors13 - 0.005 0 0.012 0 0.011
Number of non-fatal accidents
Construction and maintenance works carried out directly by DSD's staff13 No. 14 12 10 11 13
Construction and maintenance works undertaken by DSD's contractors13 No. 64 36 33 18 14
Non-fatal accident rate per 100,000 man-hours
Construction and maintenance works carried out directly by DSD's staff13 - 0.21 0.18 0.15 0.17 0.20
Construction and maintenance works undertaken by DSD's contractors13 - 0.34 0.19 0.21 0.13 0.16
(11) As there is no distinct requirement regarding receiving training in terms of gender, therefore we do not report the data broken down by gender.
(12) The staff turnover figures exclude those General/Common Grades’ staff on inter-department transfer.
(13) The above figures involve staff with their 1st appointment date falling within the period from 1 April 2014 to 31 March 2015.

Community Work and Charitable Contributions (G4-EC8)

  Unit 2011-12 2012-13 2013-14 2014-15 2015-16
Total number of voluntary work hours carried out by our staff Hours 469 589 800 1,000 1,200
Number of voluntary projects completed No. 14 18 21 25 27
Employee fundraising HK$ thousands 133 56 67 73 65

Economic Performance

The two major types of expenses in DSD are operational expenses and public works project expenses. Our day-to-day departmental operation is financed by the General Revenue Account of the Government, while funding for public works projects are approved on a project-by-project basis by the Finance Committee of the Legislative Council. To ensure public funds are used effectively, we strive to enhance operation efficiency by adopting new technologies and management practices.

Operating Expenditure (G4-EC1)

  Unit 2011-12 2012-13 2013-14 2014-15 2015-16
Recurrent Expenditure Personal Emoluments $M 727.4 769.3 793.5 839.8 882.3
Departmental Expenses15 $M 1,111.2 1,141.4 1,178.9 1,286.4 1,487.8
Non-recurrent Expenditure $M 0.0 0.0 0.0 0.0 0.0
Total $M 1,838.6 1,910.7 1,972.4 2,126.2 2,370.1
(15) It included expenses on Mandatory Provident Fund & Civil Service Provident Fund.

Capital Works Project Expenditure

  Unit 2011-12 2012-13 2013-14 2014-15 2015-16
Value of drainage projects under planning, design and construction $M 14,323 11,288 12,311 12,975 13,983
Value of sewerage projects under planning, design and construction $M 41,200 49,872 78,749 80,483 72,402
No. of drainage projects under planning, design and construction No. 22 20 20 17 18
No. of sewerage projects under planning, design and construction No. 70 77 87 81 73

Sewage Services Operating Accounts

  Unit 2011-12 2012-13 2013-14 2014-15 2015-1616
Sewage Charge Revenue $M 703 776 875 955 1,048
Trade Effluent Surcharge Revenue $M 204 207 221 226 232
Other Revenue $M 40 40 44 45 47
Overall Revenue $M 947 1,023 1,141 1,227 1,327
Expenditure (excluding depreciation) $M (1,484) (1,538) (1,594) (1,759) (1,927)
Depreciation $M (782) (801) (850) (840) (1,045)
Overall Expenditure $M (2,266) (2,339) (2,444) (2,599) (2,972)
(Deficit) $M (1,319) (1,316) (1,303) (1,372) (1,645)
(16) The 2015-16 figures are provisional and subject to endorsement by the Sewage Services Accounts Committee.

Sewage Services Operating Cost Recovery Rate

  Unit 2014-15 2015-16
Revenue of Sewage Charge and Trade Effluent Surcharge $M 1,182 1,280
Expenditure (excluding depreciation) of Sewage Charge and Trade Effluent Surcharge $M 1,715 1,881
Operating Cost Recovery Rate % 68.9 68.0
Note : The 2015-16 figures are provisional and subject to endorsement by the Sewage Services Accounts Committee.

Sewage Service Charge Consumption and Payment Statistics

  2011-12 2012-13 2013-14 2014-15 2015-16
Number of water accounts (in thousand) 2,800 2,820 2,860 2,881 2,907
Number of water accounts liable to pay sewage charge (in thousand) 2,590 2,610 2,640 2,663 2,689
Number of Accounts - Trade Effluent Surcharge (TES) (in thousand) 21.4 22 23 24 25

Routine Services

Number of Enquiries Received for the Past Five Years

[section0_chart1.png]

Business Reclassification Applications Handled for the Past Five Years

[section0_chart2.png]

Number of New TES Accounts Identified for the Past Five Years

[section0_chart3.png]

Water Consumption of Sewered Accounts ($524 million m3) - Customers Pattern in 2015-16

[section0_chart4.png]

Domestic Accounts - Sewage Charge Payment Pattern in 2015-16 (HK$/month)

[section0_chart5.png]

TES Accounts - TES Payment Pattern in 2015-16 (HK$/month)

[section0_chart6.png]

Sewage Charge (HK$1,048 M) - Revenue Pattern by Type in 2015-1617

[section0_chart7.png]

Trade Effluent Surcharge (HK$232 M) - Revenue Pattern by Type in 2015-1617

[section0_chart8.png]

Sewage Charge and Trade Effluent Surcharge (HK$1,280 M) - Revenue Pattern by Type in 2015-1617

[section0_chart9.png]

(17) The figures are provisional only and are subject to endorsement by the Sewage Services Accounts Committee.
  Unit 2011-12 2012-13 2013-14 2014-15 2015-16
Flooding Prevention
Total number of flooding blackspots No. 15 13 11 10 8
Sewage Treatment
Coverage of public sewerage (population percentage)18 - 93% 93% 93% 93% 93%
Total length of sewerage network km 1,647 1,683 1,695 1,700 1,700
Total no. of sewage treatment facilities No. 287 292 293 297 300
Volume of sewage treated Million m3 981 1,001 1,021 1,011 1,007
By Preliminary Treatment 286 306 303 228 138
By Primary Treatment 4 5 5 5 5
By Chemically Enhanced Primary Treatment (CEPT) 525 525 541 606 690
By Secondary Treatment 166 165 172 172 174
By Tertiary Treatment 0.13 0.2 0.15 0.14 0.14
(18) Based on the number of water accounts
Top

 

[Executive Summary] [Traditional Chinese Version] [Simplified Chinese Version] [Graphical Version] [Verification Statement] [Feedback Form] [Key Statistics and Data] [GRI Content Index] [Sitemap]

Home | Director’s Statement | About this Report | Highlights of the Year | Governance Approach | Our Core Responsibilities | Environmental Management | Stakeholder Engagement Activities | Joining Hands with Working Partners | Care for Our Staff | Meeting the Targets |

(c) Copyright 2016 Best viewed by MS IE 8.0 or above with resolution 1024 x 768.