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Drainage Services Department - Sustainability Report 2016-17

Key Statistics and Data

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Environmental Performance

Energy Consumption

  Unit 2012-13 2013-14 2014-15 2015-16 2016-17
By DSD (302-1)
Electricity1 GJ (Million kWh) 864,000
(240)		 890,244
(247)		 947,646
(263)		 988,740
(275)		 984,800
(274)
Gasoline
Pool cars GJ (Litre) 1,046.19
(31,862)		 877.48
(26,724)		 893.14
(27,048)		 824.63
(24,974)		 627.25
(18,995)
AM cars GJ (Litre) 4,315.08
(130,675)		 4,103.83
(124,278)		 3,799.29
(115,060)		 3,496.86
(105,901)		 3,173.29
(96,097)
Biogas2 million m3 10 9 10 10 7
Average electricity consumption per unit volume of sewage treated (302-3) kWh 0.2388 0.2409 0.2591 0.2716 0.2886
By DSD's contractors (302-2)
Electricity GJ (Million kWh) Figures not available 137,952
(38.32)		 23,328
(6.48)		 97,798
(27.17)		 56,616
(15.73)
Gasoline GJ (Litre) Figures not available 13,153
(398,325)		 10,438
(316,101)		 6,834
(187,239)		 4,473
(135,461)
Diesel GJ (Million kWh) Figures not available 94,698
(2,594,463)		 27,451
(752,080)		 42,601
(1,167,162)		 12,525
(343,571)
1 The total electricity consumption includes the office at Revenue Tower, Kowloon Government offices and Western Magistracy, and DSD's flood prevention and sewage treatment facilities (including sewage treatment works, sewage pumping stations and stormwater pumping stations).
2 Generated from sewage treatment works.

Greenhouse Gas (GHG) Emissions3

  Unit 2012-13 2013-14 2014-15 2015-16 2016-17
By DSD
Electricity purchased (Scope 2)(305-2) Tonnes CO2e 168,000 173,103 184,265 187,611 191,492
Gasoline combustion (Scope 1) (305-1)
Pool cars Tonnes CO2e 75.19 63.07 63.83 65.90 44.83
AM cars Tonnes CO2e 308.39 336.53 271.54 249.93 226.79
By DSD's contractors (305-3)
Electricity purchased (Scope 3) Tonnes CO2e Figures not available 26,824 4,536 19,016 11,009
Fuel consumption (Scope 3)4 Tonnes CO2e Figures not available 7,865 2,824 3,561 1,218
3 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.
4 Generated from stationary combustion of diesel and mobile combustion of petrol i.e. vehicle consumption.

Water Consumption

  Unit 2012-13 2013-14 2014-15 2015-16 2016-17
Freshwater consumption at flood prevention and sewage treatment facilities (303-1) m3 2,078,729 1,709,925 2,085,560 2,050,936 2,433,500
Daily reclaimed water produced at STWs m3 1,194 1,151 1,565 1,512 1,332
Percentage of water reclaimed (303-3) % 0.06 0.07 0.08 0.07 0.05

Sewage Treatment

  Unit 2012-13 2013-14 2014-15 2015-16 2016-17
Volume of sewage treated (306-1) Million m3 1,001 1,021 1,011 1,007 1,015
Biochemical oxygen demand (BOD) removed from sewage Tonnes 100,677 109,579 115,681 124,569 151,406
Suspended solids (SS) removed from sewage 146,208 169,792 207,738 242,933 277,232
Nitrogen removed from sewage 5,310 6,067 6,820 6,551 6,683
Dewatered sludge removed from sewage 300,965 298,093 355,220 392,396 410,526
Screenings removed from sewage 13,334 13,663 15,817 15,172 14,823
Grits removed from sewage 4,741 4,903 5,429 6,631 6,513

Waste Management (306-2)

  Unit 2012-13 2013-14 2014-15 2015-16 2016-17
Construction & demolition materials
C&D waste disposed of to landfills5 103 kg 8,525 6,093 6,420 6,998 5,801
C&D waste disposed of to public fill areas5 103 kg 765,105 584,018 238,662 235,735 170,162
Recyclable waste collected
Waste paper6 kg 11,983 13,284 28,918 19,360 20,587
Aluminium cans7 kg 14.15 14.76 30.70 19.73 29.51
Plastic bottles7 kg 29.92 27.78 43.70 20.71 18.76
5 Construction and Demolition (C&D) waste includes metals, paper / cardboard packaging waste, chemical waste and other wastes such as general refuse.
6 The amount of waste paper collected did not include those collected from project sites.
7 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.

Material consumption (301-1)

  Unit 2012-13 2013-14 2014-15 2015-16 2016-17
By DSD
Total paper consumption Reams 11,054 10,520 10,012 9,608 9,285
A4 paper Reams 10,696 10,080 9,452 9,357 8,992
A3 paper Reams 358 440 470 251 293
Purchased paper with recycled content Reams (% of total paper purchased) 11,054
(100%)		 10,520
(100%)		 10,012
(100%)		 9,608
(100%)		 9,285
(100%)
Paper consumed per staff (By establishment) Reams 6.0 5.6 5.3 5.0 4.8
By DSD's contractors
Rebar Tonnes Figures not available 7,165 10,643
Steel Tonnes 3,171 3,402
Bricks m3 30 5,817
Cement Tonnes 2,406 2,248
Cement Mortar m3 263 640
Concrete m3 50,616 73,175
Sand Tonnes 12,586 24,117
Stones Tonnes 9,617 31,898
Office paper Tonnes 27 40

Greening

  Unit 2012-13 2013-14 2014-15 2015-16 2016-17
Trees Planted No. 1,996 2,169 570 2,300 10,000
Area of Green Roof Added m2 3,200 4,902 6,051 4,015 4,200
Electricity Generated from Biogas Million kWh 30 27 28 32 21

Social Performance

Staff

  Unit 2012-13 2013-14 2014-15 2015-16 2016-17
Staff Establishment (102-7) No. 1,856 1,862 1,883 1,914 1,937
Directorate No. 18 18 18 18 18
Professional No. 292 292 306 310 310
Technical & Site Supervisory No. 820 827 838 865 884
General & Common Grades No. 525 526 524 526 531
Model Scale I No. 201 199 197 195 194
Training
Training courses8 No. 278 584 624 654 6749
Trainees No. 9,848 6,574 7,159 8,019 9,042
Training hours received Hours 52,597 54,517 57,600 58,520 57,737
Average Training Hours per Staff10 Hours 28.3 31.6 31.8 33.0 33.4
Total expenditure on training8 HK$ 4,756,800 3,856,237 4,201,000 3,585,011 3,046,28311
Injury (403-2)
Staff injury cases12 No. 12 10 11 13 7
No. of sick leave for officers injured on duty Days 1,237 603 914.5 870.5 800.513
8 The number includes internal and external seminars/ workshops/ training courses/ visits.
9 The number includes training courses held by CSTDI and staff-in itiated external courses.
10 Based on the staff strength.
11 It includes local training only.
12 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.
13 The number includes sick leave days granted in 2015-16 but enjoyed in 2016-17.

Staff Breakdown in 2016-17

  Unit By Strength
No. of Staff (102-8) No. 1,729
By Post
Directorate % 1.0
Professional % 16.8
Technical & Site Supervisory % 48.3
General & Common Grades % 26.4
Model Scale I % 7.5
By Employment Type (102-8)
Full-time % 100
Part-time % 0
By Employment Contract (102-8)
Permanent (Male) % 82.6
Permanent (Female) % 17.4
By Age
Age 20-29 % 8.9
Age 30-39 % 20.5
Age 40-49 % 24.9
Age 50-59 % 44.0
Age 60 or above % 1.7
By Ethnicity
Local % 100
Non-local % 0
By Gender (102-8)
Male % 82.6
Female % 17.4

Senior Management Breakdown in 2016-17

  Unit By Strength
No. of Staff (102-8) No. 6
By Age
Age 20-29 % 0
Age 30-39 % 0
Age 40-49 % 0
Age 50-59 % 100
Age 60 or above % 0
By Ethnicity
Local % 100
Non-local % 0
By Gender
Male % 100
Female % 0

Training Hours Breakdown in 2016-1714

Type of Staff No. of Staff Training Hours Received (Hours) Training Hours Per Staff (Hours)
Directorate Staff 18 1,737 96.5
Professional Grade Staff 290 24,190 83.4
Technical, Site Supervisory, General Grade and Model Scale I Staff 1,421 31,810 22.3

Staff Turnover in 2016-1715

  Unit Male Female
Age 20-29 No. 2 0
Age 30-39 No. 2 0
Age 40-49 No. 2 0
Age 50-59 No. 9 3
Age 60 or above No. 68 6

New Employee Hires in 2016-1716

  Unit Male Female
No. of New Employee Hires No. 76 19
By Age
Age 20-29 No. 33 12
Age 30-39 No. 22 3
Age 40-49 No. 12 1
Age 50-59 No. 9 3
Age 60 or above No. 0 0
14 As there is no distinct requirement regarding receiving training in terms of gender, therefore we do not report the data broken down by gender.
15 The staff turnover figures exclude those General/Common Grades' staff on inter-department transfer.
16 The above figures involve staff with their 1st appointment date falling within the period from 1 April 2016 to 31 March 2017.

Accident Rate (403-2)

  Unit 2012-13 2013-14 2014-15 2015-16 2016-17
Number of fatalities
No. of Fatalities No. 0 2 0 1 0
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. 0 2 (Male) 0 1 (Male) 0
Fatal accident rate per 100,000 man-hours
Construction and maintenance works carried out directly by DSD's staff17 - 0 0 0 0 0
Construction and maintenance works undertaken by DSD's contractors17 - 0 0.012 0 0.011 0
Number of non-fatal accidents
Construction and maintenance works carried out directly by DSD's staff17 No. 12 10 11 13 7
Construction and maintenance works undertaken by DSD's contractors17 No. 36 36 18 14 8
Non-fatal accident rate per 100,000 man-hours
Construction and maintenance works carried out directly by DSD's staff17 - 0.18 0.15 0.17 0.20 0.10
Construction and maintenance works undertaken by DSD's contractors17 - 0.19 0.21 0.13 0.16 0.11

Community Work and Charitable Contributions (203-2)

  Unit 2012-13 2013-14 2014-15 2015-16 2016-17
Total number of voluntary work hours carried out by our staff Hours 589 800 1,000 1,200 1,115
Number of voluntary projects completed No. 18 21 25 27 20
Employee fundraising HK$ thousands 56 67 73 65 53
17 We currently do not collect these figures by gender.

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 (201-1)

  Unit 2012-13 2013-14 2014-15 2015-16 2016-17
Recurrent Expenditure Personal Emoluments $M 769.3 793.5 839.8 882.3 917.2
Departmental Expenses18 $M 1,141.4 1,178.9 1,286.4 1,487.8 1,646.9
Non-recurrent Expenditure $M 0.0 0.0 0.0 0.0 0.0
Total $M 1,910.7 1,972.4 2,126.2 2,370.1 2,564.1

Capital Works Project Expenditure

  Unit 2012-13 2013-14 2014-15 2015-16 2016-17
Value of drainage projects under planning, design and construction $M 11,288 12,311 12,975 13,983 14,445
Value of sewerage projects under planning, design and construction $M 49,872 78,749 80,483 72,402 70,093
No. of drainage projects under planning, design and construction No. 20 20 17 18 18
No. of sewerage projects under planning, design and construction No. 77 87 81 73 69
18 It included expenses on Mandatory Provident Fund & Civil Servic e Provident Fund.

Sewage Services Operating Accounts

  Unit 2012-13 2013-14 2014-15 2015-16 2016-1719
Sewage Charge Revenue $M 776 875 955 1,047 1,161
Trade Effluent Surcharge Revenue $M 207 222 227 222 232
Other Revenue $M 40 44 45 48 45
Overall Revenue $M 1,023 1,141 1,227 1,317 1,438
Expenditure (excluding depreciation) $M (1,538) (1,593) (1,759) (2,149) (2,341)
Depreciation $M (808) (851) (840) (1,043) (1,517)
Overall Expenditure $M (2,346) (2,444) (2,599) (3,192) (3,858)
(Deficit) $M (1,323) (1,303) (1,372) (1,875) (2,420)

Sewage Services Operating Cost Recovery Rate20

  Unit 2014-15 2015-16 2016-1719
Revenue of Sewage Charge and Trade Effluent Surcharge $M 1,182 1,269 1,393
Expenditure of Sewage Charge and Trade Effluent Surcharge21 $M 1,715 2,101 2,296
Operating Cost Recovery Rate % 68.9 60.4 60.7

Sewage Service Charge Consumption and Payment Statistics

  2012-13 2013-14 2014-15 2015-16 2016-1719
Number of water accounts (in thousand) 2,820 2,860 2,881 2,907 2,955
Number of water accounts liable to pay sewage charge (in thousand) 2,610 2,640 2,663 2,689 2,735
Number of Accounts - Trade Effluent Surcharge (TES) (in thousand) 22 23 24 25 27
19 The 2016-17 figures are provisional and subject to endorsement by the Sewage Services Accounts Committee.
20 “Miscellaneous services” are excluded from the revenues and expenditure in this table.
21 Depreciation is not recovered through the Sewage Charge and Trade Effluent Surcharge at present.

Routine Services

Number of Enquiries about Sewage Services Received for the Past Five Years

[s11_chart1_large.jpg]

Business Reclassification Applications Handled for the Past Five Years

[s11_chart2_large.jpg]

Number of New TES Accounts Identified for the Past Five Years

[s11_chart3_large.jpg]

Water consumption of Sewered Accounts (555 Million m3) - Customers Pattern in 2016-17

[s11_chart4_large.jpg]

Domestic Accounts - Sewage Charge Payment Pattern in 2016-17 (HK$/month)

[s11_chart5_large.jpg]

TES Accounts - TES Payment Pattern in 2016-17 (HK$/month)

[s11_chart5b_large.jpg]

Sewage Charge ($1,161 M) - Revenue Pattern by Type in 2016-1722

[s11_chart6_large.jpg]

Trade Effluent Surcharge ($232 M) - Revenue Pattern by Type in 2016-1722

[s11_chart7_large.jpg]

Sewage Charge and Trade Effluent Surcharge ($1,393 M) - Revenue Pattern by Type in 2016-1722

[s11_chart8_large.jpg]

Other Key Statistics

  Unit 2012-13 2013-14 2014-15 2015-16 2016-17
Flood Prevention
Total Number of Flooding Blackspots No. 13 11 10 8 7
Sewage Treatment
Coverage of public sewerage (population percentage)23 - 93.3% 93.4% 93.4% 93.5% 93.5%
Total length of sewerage network km 1,683 1,695 1,700 1,700 1,755
Total no. of sewage treatment facilities No. 292 293 297 300 304
Volume of Sewage Treated Million m3 1,001 1,021 1,011 1,007 1,015
By Preliminary Treatment 306 303 228 138 45
By Primary Treatment 5 5 5 5 5
By Chemically Enhanced Primary Treatment (CEPT) 525 541 606 690 779
By Secondary Treatment 165 172 172 174 186
By Tertiary Treatment 0.2 0.15 0.14 0.14 0.17
22 The figures are provisional only and are subject to endorsement by the Sewage Services Accounts Committee.
23 Based on the number of domestic water bill accounts with sewage charges levied.
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[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 | Sponge City: Adapting to Climate Change | Highlights of the Year | Governance Approach | Our Core Responsibilities | Environmental Management | Care for Our Staff | Media Engagement Activities | Stakeholder Engagement Activities | Meeting the Targets |

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