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Sustainability Report 2017-18

Key Statistics and Data

Environmental Performance

Energy Consumption

	Unit	2013-14	2014-15	2015-16	2016-17	2017-18
By DSD
Electricity¹	GJ (Million kWh)	892,800 (248)	950,400 (264)	990,000 (275)	1,062,000 (295)	1,137,600 (316)
Gasoline
Pool cars	GJ (Litre)	877.48 (26,724)	893.14 (27,048)	824.63 (24,974)	627.22 (18,995)	599.47 (18,155)
AM cars	GJ (Litre)	4,103.83 (124,278)	3,799.29 (115,060)	3,496.86 (105,901)	3,173.12 (96,097)	3,421.53 (103,615)
Biogas²	million m³	9	10	10	7	9
Electricity generated from biogas	Million kWh	27	28	32	21	27
Average electricity consumption per unit volume of sewage treated	kWh	0.24	0.26	0.27	0.29	0.31
By DSD's contractors (302-2)
Electricity	GJ (Million kWh)	137,952 (38.32)	23,328 (6.48)	97,798 (27.17)	56,616 (15.73)	16,480 (4.58)
Gasoline	GJ (Litre)	13,153 (398,325)	10,438 (316,101)	6,834 (187,239)	4,473 (135,461)	4,525 (137,045)
Diesel	GJ (Million kWh)	94,698 (2,594,463)	27,451 (752,080)	42,601 (1,167,162)	12,525 (343,571)	16,566 (454,411)

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. #Data may not equal to actual figures due to rounding of numbers in calculation.

Greenhouse Gas (GHG) Emissions³

	Unit	2013-14	2014-15	2015-16	2016-17	2017-18
By DSD
Electricity purchased (Scope 2)	Tonnes CO₂e	173,103	184,265	187,611	191,492	221,473
Gasoline combustion (Scope 1)
Pool cars	Tonnes CO₂e	63.07	63.83	65.90	44.83	42.85
AM cars	Tonnes CO₂e	336.53	271.54	249.93	226.79	244.53
By DSD's contractors (305-3)
Electricity purchased (Scope 3)	Tonnes CO₂e	26,824	4,536	19,016	11,009	19,019
Fuel consumption (Scope 3)⁴	Tonnes CO₂e	7,865	2,824	3,561	1,218	1,511

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	2013-14	2014-15	2015-16	2016-17	2017-18
Freshwater consumption at flood prevention and sewage treatment facilities	m³	1,709,925	2,085,560	2,050,936	2,433,500	2,191,991
Daily reclaimed water produced at STWs	m³	1,151	1,565	1,512	1,332	1,340
Percentage of water reclaimed	%	0.07	0.08	0.07	0.05	0.05

Sewage Treatment

	Unit	2013-14	2014-15	2015-16	2016-17	2017-18
Volume of sewage treated	Million m³	1,021	1,011	1,007	1,015	1,007
Biochemical oxygen demand (BOD) removed from sewage	Tonnes	109,579	115,681	124,569	151,406	146,159
Suspended solids (SS) removed from sewage		169,792	207,738	242,933	277,232	223,165
Nitrogen removed from sewage		6,067	6,820	6,551	6,683	7,106
Dewatered sludge removed from sewage		298,093	355,220	392,396	410,526	386,137
Screenings removed from sewage		13,663	15,817	15,172	14,823	14,970
Grits removed from sewage		4,903	5,429	6,631	6,513	4,996

Waste Management (306-2)

	Unit	2013-14	2014-15	2015-16	2016-17	2017-18
Construction & demolition materials
C&D waste disposed of to landfills⁵	103kg	6,093	6,420	6,998	5,801	2,273
C&D waste disposed of to public fill areas⁵	103kg	584,018	238,662	235,735	170,162	155,469
Recyclable waste collected
Waste paper⁶	kg	13,284	28,918	19,360	20,587	15,954
Aluminium cans⁷	kg	14.76	30.70	19.73	29.51	32.23
Plastic bottles⁷	kg	27.78	43.70	20.71	18.76	22.72

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	2013-14	2014-15	2015-16	2016-17	2017-18
By DSD
Total paper consumption	Reams	10,520	10,012	9,608	9,285	9,231
A4 paper	Reams	10,080	9,452	9,357	8,992	8,854
A3 paper	Reams	440	470	251	293	377
Purchased A4/A3 paper with recycle content	Reams (% of total paper purchased)	10,520 (100%)	10,012 (100%)	9,608 (100%)	9,285 (100%)	9,231 (100%)
Paper consumed per staff (By establishment)	Reams	5.6	5.3	5.0	4.8	4.8
By DSD's contractors
Rebar	Tonnes	Figures not available		7,165	10,643	13,325
Steel	Tonnes			3,171	3,402	5,042
Bricks	m³			30	5,817	1,993
Cement	Tonnes			2,406	2,248	3,500
Cement mortar	m³			263	640	1,946
Concrete	m³			50,616	73,175	74,651
Sand	Tonnes			12,586	24,117	23,111
Stones	Tonnes			9,617	31,898	26,775
Office paper	Tonnes			27	40	74

Greening

	Unit	2013-14	2014-15	2015-16	2016-17	2017-18
Trees Planted	No.	2,169	570	2,300	10,000	1,300
Area of Green Roof Added	m²	4,902	6,051	4,015	4,200	4,150

Social Performance

Staff

	Unit	2013-14	2014-15	2015-16	2016-17	2017-18
Staff establishment (102-7)	No.	1,862	1,883	1,914	1,937	1,940
Directorate	No.	18	18	18	18	18
Professional	No.	292	306	310	310	307
Technical & Site Supervisory	No.	827	838	865	884	888
General & Common Grades	No.	526	524	526	531	533
Model Scale I	No.	199	197	195	194	194
Training
Training courses⁸	No.	584	624	654	674	638
Trainees	No.	6,574	7,159	8,019	9,042	8,033
Training hours received (based on the staff strength)	Hours	54,517	57,600	58,520	57,737	60,524
Average Training Hours per Staff	Hours	31.6	31.8	33.0	33.4	35
Total expenditure on training (includes local training only)⁸	HK$	3,856,237	4,201,000	3,585,011	3,046,283	2,929,551
Injury
Staff injury cases⁹ (403-2)	No.	10	11	13	7	5
No. of sick leave for officers injured on duty	Days	603.0	914.5	870.5	800.5	305.5¹⁰

8	It includes internal and external seminars/ workshops/ training courses/ visits and 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 2016-17 but enjoyed in 2017-18.

Staff Breakdown in 2017-18

	Unit	By Strength
No. of Staff	No.	1,716
By Post
Directorate	%	0.99
Professional	%	16.67
Technical & Site Supervisory	%	50.29
General & Common Grades	%	25.58
Model Scale I	%	6.47
By Employment Type
Full-time	%	100
Part-time	%	0
By Employment Contract
Permanent (Male)	%	82.3
Permanent (Female)	%	17.7
By Age
Age 20-29	%	10.8
Age 30-39	%	22.0
Age 40-49	%	25.4
Age 50-59	%	39.5
Age 60 or above	%	2.3
By Ethnicity
Local	%	100
Non-local	%	0
By Gender
Male	%	82.3
Female	%	17.7

Senior Management Breakdown in 2017-18

	Unit	By Strength
No. of Staff	No.	6
By Age
Age 20-29	%	0
Age 30-39	%	0
Age 40-49	%	0
Age 50-59	%	83.3
Age 60 or above	%	16.7
By Ethnicity
Local	%	100
Non-local	%	0
By Gender
Male	%	100
Female	%	0

Training Hours Breakdown in 2017-18¹¹

Type of Staff	No. of Staff	Training Hours Received (Hours)	Training Hours Per Staff (Hours)
Directorate Staff	17	1,752	103
Professional Grade Staff	286	25,411	89
Technical, Site Supervisory, General Grade and Model Scale I Staff	1,413	33,361	24

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.

Staff Turnover in 2017-18¹²

	Unit	Male	Female
Age 20-29	No.	1	2
Age 30-39	No.	1	0
Age 40-49	No.	1	1
Age 50-59	No.	10	8
Age 60 or above	No.	64	6

12	The staff turnover figures exclude those General/Common Grades' staff on inter-department transfer.

New Employee Hires in 2017-18¹³

	Unit	Male	Female
No. of New Employee Hires	No.	93	22
By Age
Age 20-29	No.	50	17
Age 30-39	No.	27	3
Age 40-49	No.	12	1
Age 50-59	No.	4	1
Age 60 or above	No.	0	0

13	The above figures involve staff with their 1st appointment date falling within the period from 1 April 2017 to 31 March 2018.

Accident Rate (403-2)

	Unit	2013-14	2014-15	2015-16	2016-17	2017-18
Number of fatalities
No. of fatalities	No.	2	0	1	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.	2 (Male)	0	1 (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 contractors¹⁴	-	0.012	0	0.011	0	0.01
Number of non-fatal accidents
Construction and maintenance works carried out directly by DSD's staff¹⁴	No.	10	11	13	7	5
Construction and maintenance works undertaken by DSD's contractors¹⁴	No.	36	18	14	8	15
Non-fatal accident rate per 100,000 man-hours
Construction and maintenance works carried out directly by DSD's staff¹⁴	-	0.15	0.17	0.20	0.10	0.08
Construction and maintenance works undertaken by DSD's contractors¹⁴	-	0.21	0.13	0.16	0.11	0.22

14	We currently do not collect these figures by gender.

Community Work and Charitable Contributions (203-2)

	Unit	2013-14	2014-15	2015-16	2016-17	2017-18
Total number of voluntary work hours carried out by our staff	Hours	800	1,000	1,200	1,115	1,795
Number of voluntary projects completed	No.	21	25	27	20	41
Employee fundraising	HK$ thousands	67	73	65	53	49

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	2013-14	2014-15	2015-16	2016-17	2017-18
Recurrent Expenditure	Personal Emoluments	$M	793.5	839.8	882.3	917.2	916.9
Recurrent Expenditure	Departmental Expenses¹⁵	$M	1,178.9	1,286.5	1,487.8	1,646.9	1,692.8
Capital Account Expenditure		$M	28.6	22.6	23.3	30.1	37.2
Total		$M	2,001.0	2,148.9	2,393.4	2,594.2	2,646.9

15	It included expenses on Mandatory Provident Fund & Civil Service Provident Fund.

Capital Works Project Expenditure

	Unit	2013-14	2014-15	2015-16	2016-17	2017-18
Value of drainage projects under planning, design and construction	$M	12,311	12,975	13,983	14,445	26,876
Value of sewerage projects under planning, design and construction	$M	78,749	80,483	72,402	70,093	73,175
No. of drainage projects under planning, design and construction	No.	20	17	18	18	24
No. of sewerage projects under planning, design and construction	No.	87	81	73	69	66

Sewage Services Operating Accounts

	Unit	2013-14	2014-15	2015-16	2016-17	2017-18¹⁶
Sewage Charge Revenue	$M	875	955	1,047	1,161	1,296
Trade Effluent Surcharge Revenue	$M	222	227	222	232	244
Other Revenue	$M	44	45	48	46	46
Overall Revenue	$M	1,141	1,227	1,317	1,438	1,586
Expenditure (excluding depreciation)	$M	(1,593)	(1,759)	(2,149)	(2,340)	(2,334)
Depreciation	$M	(851)	(840)	(1,043)	(1,518)	(1,546)
Overall Expenditure	$M	(2,444)	(2,599)	(3,192)	(3,858)	(3,880)
(Deficit)	$M	(1,303)	(1,372)	(1,875)	(2,420)	(2,294)

16	The 2017-18 figures are provisional and subject to endorsement by the Sewage Services Accounts Committee.

Sewage Services Operating Cost Recovery Rate¹⁷

	Unit	2015-16	2016-17	2017-18
Revenue of Sewage Charge and Trade Effluent Surcharge	$M	1,269	1,393	1,540
Expenditure (excluding depreciation) of Sewage Charge and Trade Effluent Surcharge¹⁸	$M	2,101	2,296	2,289
Operating Cost Recovery Rate	%	60.4	60.7	67.3

17	“Miscellaneous services” are excluded from the revenues and expenditure in this table.
18	Depreciation is not recovered through the Sewage Charge and Trade Effluent Surcharge at present.

Sewage Service Charge Consumption and Payment Statistics

	2013-14	2014-15	2015-16	2016-17	2017-18
Number of water accounts (in thousand)	2,860	2,881	2,907	2,955	2,989
Number of water accounts liable to pay sewage charge (in thousand)	2,640	2,663	2,689	2,735	2,765
Number of Accounts - Trade Effluent Surcharge (TES) (in thousand)	23	24	25	27	28

Routine Services

Number of Enquiries Received for the Past Five Years

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

Business Reclassification Applications Handled for the Past Five Years

Number of New TES Accounts Identified for the Past Five Years

Water consumption of Sewered Accounts (561 Million m³) - Customers Pattern in 2017-18

Water consumption of Sewered Accounts (561 Million m3) - Customers Pattern in 2017-18

Domestic Accounts - Sewage Charge Payment Pattern in 2017-18 (HK$/month)

TES Accounts - TES Payment Pattern in 2017-18 (HK$/month)

Sewage Charge ($1,296 M) - Revenue Pattern by Type in 2017-18

Trade Effluent Surcharge ($244 M) - Revenue Pattern by Type in 2017-18

Sewage Charge and Trade Effluent Surcharge ($1,540 M) - Revenue Pattern by Type in 2017-18

Sewage Charge and Trade Effluent Surcharge ($1,540 M) - Revenue Pattern by Type in 2016-17

Other Key Statistics

	Unit	2013-14	2014-15	2015-16	2016-17	2017-18
Flood Prevention
Total Number of Flooding Blackspots	No.	11	10	8	7	6
Sewage Treatment
Coverage of public sewerage (population percentage)¹⁹	-	93.4%	93.4%	93.5%	93.5%	93.5%
Total length of sewerage network	km	1,695	1,710	1,727	1,755	1,770
Total no. of sewage treatment facilities	No.	293	297	300	304	314
Volume of Sewage Treated	Million m³	1,021	1,011	1,007	1,015	1,007
By Preliminary Treatment		303	228	138	45	58
By Primary Treatment		5	5	5	5	5
By Chemically Enhanced Primary Treatment (CEPT)		541	606	690	779	757
By Secondary Treatment		172	172	174	186	187
By Tertiary Treatment		0.15	0.14	0.14	0.17	0.17
Emission factor of GHG emissions due to electricity used for processing sewage	-	0.166	0.161	0.190	0.203	0.219