CITY OF CAPE TOWN
Water and Sanitation
Presented by: Sipho Mosai
Presented to: Neighbouring Mun.
Date: 26 September 2007
Overview of the Service
BULK
CONSUMERS
RAW
RAW WATER
IMPOUNDMENTS
CONVEYANCE
POTABLE
TREATMENT
RETICULATION
STORAGE
SERVICE
BULK
STORAGE
CONVEYANCE
CONSUMERS
IN CCT
BULK
WASTEWATER
COLLECTION
WASTEWATER
CONVEYANCE
RE-USE
WASTEWATER
TREATMENT
ENVIRONMENT
Water Requirements
•
No. of Dams
:
11
•
No. of Water Treatment Works :
12 (Range 3 to 500 Ml/d)
•
Bulk Service Reservoirs
:
20 (Range 3.4 to 614 Ml)
•
Total Water Supplied:
:
850 Ml /d
Western Cape
Voelvlei Dam
Water System
Wemmershoek
Wemmers-
Steenbras
Steenbras
hoekDam
Dam
Dam
Dam
Theewaterskloof Dam
Theewaterskloof
Dam
Saleable
Water
DWAF
Palmiet
Dam
Palmiet
River
City
City
ofof
Cape Town
Cape
Town
Saleable
Water
Skuifraam
Berg
RiverDam
Dam
TCTA
TCTA
Agric
Water
Water
Income
TCTA
Water
Income
Demand vs Supply dynamics
Demand
Management
Supply
Augmentation
y Implementation of various Water Demand
y
Management Initiatives
Development of water resources through the
implementation of various supply schemes such
as desalination, dams and groundwater
exploitation
Demand vs Supply dynamics
Bulk Water Supplied by the CCT
480,000
20% WDM
SAVING
REQ.
430,000
NEW
SOURCES
REQUIRED
ACTUAL DEMAND
380,000
BERG
WATER
PROJECT
330,000
LOW WATER
DEMAND
CURVE
280,000
AVAILABLE
SUPPLY
14/15
12/13
10/11
08/09
06/07
04/05
02/03
00/01
98/99
96/97
94/95
92/93
230,000
90/91
Megalitres per annum
"DO NOTHING" SCENARIO
EXISTING
SOURCES
BERG RIVER DAM
• Completion Date - 2007
• Amount of water available - 81 000 000 kl
Current Water Resource
Investigations:
TMG Aquifer Feasibility Study
&
Desalination Pilot Project
Extent of TMG Aquifer
Study area
Study ar ea
Water Demand Management - 10 Point Plan
Reduce network and commercial losses
Reduce low income household leakage
Reduce council consumption
Ensure equitable tariffs
Control water wastage and ensure new developments are water efficient
Promote retrofitting
Communication, education and informative billing
Promote alternative technology
Conserve CCT water supply
Create an environment for long term effective WDM
Water Demand Management 10 year Plan
Major Capital Projects
Pressure Management
Meter Management / replacement
Treated Effluent recycling
Management Information System
Upgrade Telemetry System
Major Operating Programmes
Leak Detection Teams
Integrated Leak Repair Project
Preventative Maintenance
Data Validation of billing system
Customer Awareness
Education Campaign
School Education
Retrofit Programme
Support for Large Consumers
(TOTAL)
R56 mil
R97 mil
R82 mil
R25 mil
R24 mil
(ANNUAL)
R2.0 mil
R10 mil
R1.1 mil
R1.1 mil
R2.0 mil
R1.2 mil
R1.7 mil
R8.0 mil
R0.6 mil
LEAK REPAIRS IN INDIGENT HOUSEHOLDS
MayCo policy acceptance of work in private indigent households, in
agreement with owner
Two projects undertaken:
Pilot leaks repair – community labour-based with training and
community awareness sharing
1 200 leaks repaired @ R80ea
Reducing consumption 40 – 15 kl /month/hh
Mfuleni with DWAF funding
Differs in one aspect – generating enterpreneurship and
sustainability, larger scale
PRV’s installed (50% night-flow saving)
Training basic plumbing & awareness programme
developed
On-site audit
Potential in 12 000 indigent homes for 11Ml/day
>1,5% total City demand
Option
Pressure
management
User education
Elimination of
automatic flushing
urinals
Tariffs, metering
and credit control
Voëlvlei *
Leakage repair
Lourens River
Diversion
TMG Aquifer *
Eerste River
Diversion
Cape Flats Aquifer
Treated
wastewater for
local urban and
industrial use
Promotion of
private boreholes
Desalination *
Introduction of
water-efficient
fittings
Promotion of greywater use
Treated
wastewater for
commercial
irrigation farmers
Treated
wastewater
reclaimed to
potable standard
Yield
Financial
Socioeconomic
Acceptability
Environmental
Overall
Score
64
84
62
95
93
83
64
57
78
76
68
59
91
94
93
93
80
79
69
100
69
29
93
75
87
52
78
83
64
84
54
85
66
83
75
74
51
93
44
74
73
72
70
70
75
75
73
54
79
78
39
53
70
69
66
41
69
75
57
31
75
68
70
97
69
67
38
59
61
74
37
57
73
48
25
50
63
64
85
38
82
93
57
56
29
55
28
63
82
54
48
72
10
26
82
51
71
17
71
38
97
47
Water Demand Management - 10 Point Plan
Reduce network and commercial losses
Reduce low income household leakage
Reduce council consumption
Ensure equitable tariffs
Control water wastage and ensure new developments are water efficient
Promote retrofitting
Communication, education and informative billing
Promote alternative technology
Conserve CCT water supply
Create an environment for long term effective WDM
Water Demand Management 10 year Plan
Major Capital Projects
Pressure Management
Meter Management / replacement
Treated Effluent recycling
Management Information System
Upgrade Telemetry System
Major Operating Programmes
Leak Detection Teams
Integrated Leak Repair Project
Preventative Maintenance
Data Validation of billing system
Customer Awareness
Education Campaign
School Education
Retrofit Programme
Support for Large Consumers
(TOTAL)
R56 mil
R97 mil
R82 mil
R25 mil
R24 mil
(ANNUAL)
R2.0 mil
R10 mil
R1.1 mil
R1.1 mil
R2.0 mil
R1.2 mil
R1.7 mil
R8.0 mil
R0.6 mil
LEAK REPAIRS IN INDIGENT HOUSEHOLDS
MayCo policy acceptance of work in private indigent households, in
agreement with owner
Two projects undertaken:
Pilot leaks repair – community labour-based with training and
community awareness sharing
1 200 leaks repaired @ R80ea
Reducing consumption 40 – 15 kl /month/hh
Mfuleni with DWAF funding
Differs in one aspect – generating enterpreneurship and
sustainability, larger scale
PRV’s installed (50% night-flow saving)
Training basic plumbing & awareness programme
developed
On-site audit
Potential in 12 000 indigent homes for 11Ml/day
>1,5% total City demand
Water Services
Reticulation
Reticulation Vital
Statistics
•
•
•
•
•
•
9200 km water mains
103 water pump stations
Reservoirs
8600 km sewers
376 wastewater pump stations
29 stormwater pump stations
DEALING WITH BACKLOGS
In 6 months since Water Services’ active involvement:
1 878 toilets installed, serving 22 050 hh (total 4 280)
882 standpipe taps installed serving 9 390 hh (total 10 080)
Low-Cost Housing provided 2 460 houses
Reducing backlogs to
Water 7 000 hh
Sanitation 50 000 hh
99,2%
94,1%
AM
Water
Services
Customer
Charter
2001-2002
Satisfaction levels - overall performance
Overall
2002
100
2003
2004
2006
Overall performance
Overall performance
Overall performance
1
0.4
*
High
satisfaction 80
levels of
80%+, a
60
significant
increase of %
‘very’ satisfied 40
20
0
Overall performance
Not sure
Very dissatis fied
4
7
4
4
Dissatisfied
12
10
13
8
Somewhat satisfied
39
36
42
32
Very satisfied
46
46
41
55
Source: Project Water ‘02, ‘03, ’04, ‘06 n=497, 520, 400, 397 How satisfied are you with the overall performance of the City of
Cape Town in providing services to residents?
© African Res pons e, 2006 L:\Team 2\Cap e Town Water Servic es\Project Pud dle\Pres entati on
Area
Model:
Eight Areas
Head Office
Manager Reticulation
District 1 District 2 District 3
Manager Manager Manager
etc
WASTEWATER MANAGEMENT
T0 2
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#
CITY OF CAPE TOWN
LOCATION OF
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S T1 4
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CURRENT TOTAL VOLUME OF WASTEWATER
TREATED PER YEAR: 200 000 Ml = 548 Ml/day
TOTAL TREATMENT CAPACITY
= 701 Ml/d
EXCESS CAPACITY IN SOME AREAS BUT
SHORTFALL IN OTHERS
WASTEWATER TREATMENT WORKS
Wastew ater
Treatment
W orks
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
Cape Flat s
Athlone
Borc herds Quarry
Parow
Mitchells Plain
Kraaifont ein
Scot tsdene
Fisant ekraal
Bellville
Zandvliet
Macas sar
Gordons Bay
Wildevoelvlei
Pots dam
Melkboss trand
Simons Town
Millers P oint
Wes fleur (Indus trial)
Wes fleur (Domes tic)
Llandudno
Oudekraal
Klipheuwel
Philadelphia
Groot Springfontein
Green Point Outfall
Camps Bay Outfall
Hout Bay Outfall
Hydraul ic Capacity
Organi c Capacity
#
Ml /d
Population equi val ents
Current Raw flow Excess/
Current
Excess/
2003/ 2004 Deficit
2003/2004
Defici t
200
129.29
70.71 1, 645,000
1, 106,000
539,000
105
89.55
15.45
900,000
745,600
154,400
30
26.58
3.42
330,000
298,400
31,600
1.2
1.53
-0.33
6, 800
9, 250
-2,450
48
30.84
17.16
511,000
400,100
110,900
17.5
8.02
9.48
159,000
56,700
102,300
12
8.65
3.35
92,700
58,950
33,750
0
0
0
54.6
53.08
1.52
581,100
460,900
120,200
59
48
11
375,000
284,220
90,780
57
37.26
19.74
370,000
212,000
158,000
3.1
2.7
0. 4
14,000
14,700
-700
14
9.19
4.81
86,000
74,200
11,800
32
34.49
-2.49
306,000
357,000
-51,000
5.4
2.28
3.12
29,000
10,700
18,300
4.5
1.73
2.77
25,000
9, 360
15,640
0.06
0.06
0
600
600
0
6
5.32
0.68
65,500
76,250
-10,750
8
6.07
1.93
87,000
45,800
41,200
0.3
0.21
0.09
1, 200
1, 000
200
0.03
0.03
0
300
300
0
0.07
0.07
0
450
700
-250
0.086
0.06
0.026
0
0.025
0.005
0.02
0
30
25.96
4.04 n/a
n/a
3.7
2.08
1.62 n/a
n/a
9.8
4
5. 8 n/a
n/a
NOTE: Excess/ defi cit hydrauli c and organi c capaci ty based on current data
# 1 Populati on equivalent (pe) based on 110grams COD per person
Treatment
P rocess
Used
A ctivated Sludge
A ctivated Sludge
A ctivated Sludge
A ctivated Sludge
A ctivated Sludge
A ctivated Sludge/Bio Filters
A ctivated Sludge
W ill be A ctivated Sludge
A ctivated Sludge
A ctivated Sludge
A ctivated Sludge
A ctivated Sludge
A ctivated Sludge
A ctivated Sludge / Bio Filt ers
A ctivated Sludge
B io Filt ers
A ctivated Sludge
A ctivated Sludge
A ctivated Sludge
Rotat ing Disc Unit
Rotat ing Disc Unit
Rotat ing Disc Unit
Oxidat ion Pond
Oxidat ion Pond
S ea Out fall
S ea Out fall
S ea Out fall
WASTEWATER TREATMENT WORKS
Waste wa ter
Treatment
Wo rks
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
1
2
3
4
5
6
7
Cape Flat s
At hlone
Borc herds Q uarry
Parow
Mit chells Plain
Kraaifont ein
Sc ot ts dene
Fisantekraal
Bellville
Zandvliet
Macass ar
Gordons Bay
Wildevoelvlei
Pots dam
Melkbos strand
Simons Town
Millers Point
Wes fleur (Indust rial)
Wes fleur (Domes tic )
Llandudno
Oudek raal
Klipheuwel
Philadelphia
Groot Springfont ein
Green Point Out fall
Camps Bay Outfall
Hout Bay O utfall
Capped
Y/ N
N
Y
Y
N
Y
Y
N
N
N
N
N
N
N
Y(47)
N
N
N
N
N
N
N
N
N
N
N
N
N
Possibl e flow diversions
(Refer to col umn 1 numbe r)
From
To
Ml/ d
2, 3
1
1
2
10
8
6
Infil tr ati on
probl ems
Y/N
25,xs 30
25
x s30
2
30
x s17.5
x s12
Y
Y
N
N
N
Y
Y
3
25,12/10, 30
25, 12, 3/ 12
3
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Y
Y
Y
Y
Y
Y
N
Y
N
N
N
N
N
N
N
N
Y
Y
N
Rational isation
(WWTW Cl uster s)
Se e co mm ents
bel ow
1
6
1
6
1
1
8
6,7,9
9,11
9, 10,12
8
11, 5
10
11
2
2
2
4
4
4
4
5
5
5
5
7
7
8
8
8
3
3
RATI ONALI SATI ON:
At hlone and Borc herds Q uarry WWTW 's to be capped and exc es s flow divert ed t o Cape Flat s WWTW. Parow
WWTW t o ext ract it 's requirement from adjacent s ewer.
Bellville, Zandvliet and Macass ar WW TW's t o be c ons idered as a combined cat chment. Pos sibly c ap Belllville
and expand Zandvliet and Macas sar WWTW's. Bott elary (25Ml/ d) t o Zv/ Mac.
Pots dam WWTW t o be c apped with exc ess flow divert ed t o Melkboss trand WWTW.
Kraaifont ein, Sc ot ts dene, Bellville and Fisantekraal (proposed) WWTW'S to be c onsidered as a combined
cat chment. All excess flow to Fisant ek raal W WTW.
As for 2 above but cap Gordons Bay WWTW and divert ex ces s flow t o Macass ar WW TW.
At hlone WWTW t o be c apped with all ex cess flow t o Cape Flats WW TW.
Zandvliet and Macassar WWTW's t o be cons idered as a combined c at chment . Zandvliet WWTW to be a
regional WWTW .
EFFLUENT COMPLIANCE
FINAL EFFLUENT QUALITY COMPLIANCE WITH STANDARD/PERMIT (%)
CAPACITY >15 Ml/d
Susp Solids
Athlone
Bellville
Borcherds Quarry
Cape Flats
Macassar
Mitchells Plain
Potsdam ASP
Potsdam BIO
Zandvliet
MORE THAN 90% COMPLIANCE
LESS THAN 75% COMPLIANCE
96
86
98
44
96
92
92
88
98
YEAR TO MAY 2005
Chem Ox
Ammonia
Demand
98
96
82
66
96
77
48
100
94
85
92
88
90
94
10
12
98
98
E.coli
0
2
74
100
75
32
2
0
96
FINAL EFFLUENT QUALITY COMPLIANCE WITH STANDARD/PERMIT (%)
CAPACITY <15 Ml/d
Susp Solids
Gordons Bay
Klipheuwel
Kraaifontein
Llandudno
Millers Point
Melkbosstrand
Oudekraal
Parow
Scottsdene
Simons Town
Wesfleur DOM
Wesfleur IND
Wildevoelvlei
MORE THAN 90% COMPLIANCE
LESS THAN 75% COMPLIANCE
98
87
87
84
90
100
86
98
94
87
100
85
88
YEAR TO MAY 2005
Chem Ox
Ammonia
Demand
98
100
31
6
58
50
98
96
60
79
98
100
68
73
84
67
96
81
13
75
98
100
25
54
88
98
E.coli
68
86
61
20
0
76
73
75
54
85
94
2
98
EXISTING & POTENTIAL POTABLE WATER
REPLACEMENT
Athlone
Bellville
Borcherd’s Quarry
Cape Flats
Gordon’s Bay
Kraaifontein
Macassar
Melkbosstrand
Mitchellsplain
Parow
Potsdam
Scottsdene
Atlantis
Wildevoelvlei
Zandvliet
TOTAL
3 Ml/d
6.5
2
4.5
0.5
1.4
2.1
2
0
1.2
7
0.3
0.3
0
0
30.8 Ml/d
15 Ml/d
19
2
14
2
3
12
2
4
2
24
3
5
5
5
120 Ml/D
CURRENT MAIN CAPITAL PROJECTS
4.
POTSDAM - UPGRADING & EXTENSION (R140- 150M)
GREEN POINT – UPGRADING (R6.3M)
SCOTTSDENE – UPGRADING (R5.0M)
KRAAIFONTEIN – DEWATERING EQUIPMENT (R3.5M)
5.
BELLVILLE, FISANTEKRAAL, MELKBOS – ENVIRONMENTAL IMPACT
1.
2.
3.
ASSESSMENTS IN PROGRESS
6.
ZANDVLIET – EXTENSION (N2 GATEWAY) (R53M)
OTHER PROJECTS
1
STAFF TRAINING
2
PLANT OPTIMISATION
3
IMPROVING DATA COLLECTION & UTILISATION
4
DRAWING UP OF SAFE WORK PROCEDURES
5
CONTINGENCY PLANS
The
SCIENTIFIC
SERVICES SECTION
CORE BUSINESS:
•
Perform physical, chemical, hydrobiological and bacteriological
analyses relevant to water, landfill and air quality
•
Provide treatment advice for process optimisation
•
Conduct ad hoc investigations relevant to water and wastewater
treatment
•
Conduct and participate in Water Research Projects
•
Inspect and monitor industrial effluent discharges
•
Issue water usage accounts & penalties to industry
•
Sampling of environmental and process waters
•
Provide and and interpret scientific data into management information
•
Provide data and advice for public forums
•
Pollution abatement
OUR CLIENTS:
1.
BULK WATER TREATMENT DEPT.
2.
WASTEWATER TREATMENT DEPT.
3.
WASTE MANAGEMENT
4.
RETICULATION DEPT.
5.
HEALTH DEPT.
6.
CATCHMENT MANAGEMENT
7.
DEPT. OF WATER AFFAIRS & FORESTRY
8.
INDUSTRY
CHALLENGES
BRAIN DRAIN
SERIOUS STAFF CONSTRAINTS
LOCKED EXPERTISE
LACK OF MULTI-SKILLING
RETAINMENT OF SKILLS/STAFF
SILO’s
MISSION
The Scientific Services Department is committed in providing a
cost effective monitoring, analytical, consultative and advisory
service to the City of Cape Town and its residents.
Water Services : Saving Water is a Way of Life
HISTORIC STRUCTURE
ADMINISTRATION
MICROBIOLOGY
HYDROBIOLOGY
TRADE WASTE
SEWAGE LAB
Water Services : Saving Water is a Way of Life
WATER LAB
AIR QUALITY
CURRENT STRUCTURE
AN ALYTIC
Water AL
Biology
Sampling
Analytical
Water Services : Saving Water is a Way of Life
Planning and Strategy
(WDM and Strategy)
Water Services Planning
WSDP
Economic modelling
IWRP
Business Planning
Knowledge Management
Benchmarking
Water Services Development Plan (WSDP)
IDP 2005/06 INTEGRATION
Goals for 2020:
Universal access to basic water and sanitation services (currently 96% and
91% respectively)
Total water demand down by 30% on unconstrained projected demand (Target
was 20% by 2010, have achieved 17% by 2005)
Water Services contribute to 4 of 5 City Strategic Themes:
Integrated human settlement
ƒ Service infrastructure provision and maintenance
Economic growth and job creation
ƒ Expanded public works programme for job creation
ƒ Enabling economic urban developments
Building strong communities
ƒ Free basic services (survival and sanitation improved)
ƒ Leak reduction
Equitable and effective service delivery
ƒ Service infrastructure
ƒ Managing Water Supply and Demand to meet future needs
ƒ Managing Wastewater Treatment
FINANCE
Require R5.5 bil
WATER SER VIC ES 10 YR CAPITAL REQU IREMEN T : DEPAR TMENT AL TR END C OMPAR ISON
2005/06
2006/07
2007/08
2008/09
2009/10
2010/11
2011/12
2012/13
2013/14
350.00
300.00
RANDS (MILLIO NS)
250.00
200.00
150.00
100.00
50.00
0.00
B ulk Water
W astewater Treatment
Reticulation Water incl Basic
Reticulation Sewer incl B asic
2014/15
Water Services is financially insolvent
Collection Ratio improved
Rates cross-subsidization stopped
Corporate services charges reduced
Tariff increase close to the cost of water
Asset Management Services
Asset Management Services
Infrastructure Asset Management
Electrical Engineering Maintenance
Mechanical Engineering Maintenance
Electrical &
Mechanical
Engineering
Design &
Contracts
Water Fleet
AMS staff compliment of ~300
Total IAM Process
Logistics
Total Fleet compliment (operations + maintenance) = 986
Maintenance staff = approx. 280 (general worker to manager)
Maintainers
Process Control Systems
Reliability Engineering
Design and Contracts
Safety Management
Electrical Department
Mechanical Department
Fleet Services
EAM
Telemetry
Systems optimisation
Scada
Data routing and logging
Link machine with operators
Condition monitoring
Maintenance programming
Asset Acquisition and Disposal
Performance Management
Design and Contract Interface
Electrical Designs
Mechanical Designs
Quantity Surveying
Legal compliance
Safety Systems (ISO, Nosa,, Security, Occupational Health )
SWP, SOP, etc
Customer and Meter
Management
Key Functional Areas
•
•
•
•
•
•
•
An Effective Debt Management Process
Meter Verification and Meter Accuracy
Meter Management and Billing
Technical Operation Center (24hr Emergency Service)
Meter Reading
Corporate Call Center
Customer Interaction
Communication Processes With Respect to
Customer Needs
Customer Needs
Mayor’s List Camp.
Corp Call Cent
Queries
EMT
Tech Liaison
WS Man Team
R
WW
Exemptions
Man. Info
BW
Cust
Survey
Complaints
Requests
Man. Info
National
Cust
F/back
Law
Enf
Restric
Process
TOC
Tech Support
GIS
SAP
Other
Dir.
Leadership Strategy
o become a leader in
he provision of equitable,
ustainable, people-centred,
ffordable and credible
ater services to all
STRATEGIC GOALS
EQUITABLE
basic water by 2008
basic sanitation 70% informal settlements by 2010
SUSTAINABLE
available and reliable water resources
safe drinking water
protect environment; 90% treated effluent compliance by 2010
PEOPLE-CENTRED
80% customer satisfaction
skills, competencies, innovation of employees to meet objectives
meaningful stakeholder relationships
AFFORDABLE
Fair tariffs
CREDIBLE
International best management practice
the preferred water services institution
QUICK WINS
Installation of more standpipes and toilets; ensuring these functioning
properly.
AM
2. Repairing of leaks in already identified areas.
ZB
3. Moving to Goodwood.
CM
4. Bulk water meter audit – water balance.
LM
5. Costing of various aspects of the business.
MB
6. Implementation of HR projects.
CM
7. Sorting out the structure which will include… distinguishing core and noncore business; integrating mechanical maintenance; integrating all planning
processes; integrating TOC with information management.
SM
8. Technological advancement.
LM
9. WSP – WSA split.
ZB
10. Establishment of department business plans to be presented to Sipho, Oct
05. (Using language and logic of the Achievement Process).
All
11. Communicating the Vision to Organisation.
CM
1.
CONCLUSION
Set out your vision and objective upfront and revisit them
Develop a set of quick wins
Deal with Debt management/Collection Rate aggressively
Attack service backlog by allocating sufficient resources
Develop a financial strategy- Capital Development Needs – we need
R5.5 bil over next 10 years
Identify cost drivers and do something about them
Identify Asset Maintenance and Replacement Needs and have a plan
Water Services Development Plan – 5-10 year plan
Thank you
Managing Water Wisely