drakenstein municipality within cape winelands...
TRANSCRIPT
2015/06/24
1
Presented by: André KowalewskiPresented by: André KowalewskiPresented by: André KowalewskiPresented by: André Kowalewski
Drakenstein Municipality within Cape Winelands Area
Drakenstein Municipality within Cape Winelands Area
2015/06/24
2
Drakenstein Municipal AreaDrakenstein Municipal Area
WDM/WCM Interventions WDM/WCM Interventions
The following Water Demand Management and Conservat ion interventions where established.
- Hydraulic Modeling of water reticulation network for all towns.
- Introduction of a five step rising block tariff scheme.
- Pressure Management Imitative was implemented.
- Metering of all unmetered water connections and metering of all fire
fighting water connections.
- Increased public awareness and promotion of water saving devices.
- Refurbishment/replacement of existing water network (10.3km/2014/2015).
The following Water Demand Management and Conservat ion interventions where established.
- Hydraulic Modeling of water reticulation network for all towns.
- Introduction of a five step rising block tariff scheme.
- Pressure Management Imitative was implemented.
- Metering of all unmetered water connections and metering of all fire
fighting water connections.
- Increased public awareness and promotion of water saving devices.
- Refurbishment/replacement of existing water network (10.3km/2014/2015).
2015/06/24
3
Results and Successes Results and Successes
4 444 100
17 818 930
12 521 000
0.000
2000.000
4000.000
6000.000
8000.000
10000.000
12000.000
14000.000
16000.000
18000.000
20000.000
1959
1962
1965
1968
1971
1974
1977
1980
1983
1986
1989
1992
1995
1998
2001
2004
2007
2010
2013
Years
Paarl Water Demand 1959 - 2014
Total Water Demand
Ann
ual D
eman
d(M
egal
itres
)
0
5000
10000
15000
20000
25000
30000
35000
19
89
19
90
19
91
19
92
19
93
19
94
19
95
19
96
19
97
19
98
19
99
20
00
20
01
20
02
20
03
20
04
20
05
20
06
20
07
20
08
20
09
20
10
20
11
20
12
20
13
20
14
Wa
ter
De
ma
nd
(M
l/y
ea
r)
Time (Years)
Paarl Water Demand 1989 to 2014
Actual Demand
Projected Demand @ 3.5 %
Theoretical SavingsTheoretical Savings
Saving of 174 460 000 000 litres
Saving of R872 Million @ R5/kl
2015/06/24
4
Non Revenue water since 1999Non Revenue water since 1999
0
10
20
30
40
50
60
70
80
90
100
19
99
20
00
20
01
20
02
20
03
20
04
20
05
20
06
20
07
20
08
20
09
20
10
20
11
20
12
20
13
20
14
% N
on
-Re
ve
nu
e
Wa
ter
TIme (Years)
Paarl Non-Revenue Water 1999 - 2014
34.8% NRW
10.6% NRW
Non-Revenue Water StatisticsNon-Revenue Water Statistics
Table C 5.2: Non-revenue water for the various dist ribution systems
Description Unit 13/14
Record : Prior (Ml/a)
12/13 11/12 10/11 09/10 08/09
Paarl and Wellington
Volume 2 395.480 2 031.439 1 839.764 1 818.452 1 624.675 2 129.013
Percentage 14.00% 12.08% 11.05% 10.81% 10.20% 13.75%
ILI 2.30 2.17Paarl 2.39
W el 1.14
Paarl 1.84
W el 2.52
Paarl 2.14
W el 0.74
Saron
Volume 183.080 60.456 63.060 148.941 163.005 136.935
Percentage 32.23% 10.87% 10.72% 25.06% 28.50% 22.94%
ILI 5.63 1.87 1.97 4.61 5.46
Gouda
Volume 60.212 34.809 30.885 26.965 22.791 17.222
Percentage 32.07% 19.98% 19.95% 16.86% 15.65% 11.64%
ILI 4.59 2.62 2.50 2.01 1.64
Hermon
Volume -17.173 1.958 16.885 18.365 13.562 19.953
Percentage -48.64% 5.24% 35.20% 43.80% 39.97% 59.10%
ILI - 0.35 3.72 3.78 3.38
Bainskloof
Volume 1.646 0.671 1.649 0.579 0.452
Percentage 37.36% 17.41% 40.65% 12.30% 11.93%
TOTAL
Volume 2 623.245 2 129.333 1 952.243 2 013.302 1 824.485 2 303.123
Percentage 14.65% 12.11% 11.19% 11.43% 10.94% 14.15%
ILI 2.34 2.11 1.98 2.02 1.21
2015/06/24
5
Facts-Facts-
Drakenstein Municipality – upgrading of services before 2000.
Shift to conserve and save water in 1999.
Water losses of 33.8% @ 1999
Water losses of 14.1% @ January 2015
Drakenstein Municipality – upgrading of services before 2000.
Shift to conserve and save water in 1999.
Water losses of 33.8% @ 1999
Water losses of 14.1% @ January 2015
Measures requiredMeasures required
To sustain the Water Demand Management efforts obtained by Drakenstein Municipality the following strategy were followed, namely:
Proper record keeping of data and information regarding the infrastructure (including flow measurements)Historical information of the whole reticulation systems. Training for personal and using the correct equipment for all day to day operations
To sustain the Water Demand Management efforts obtained by Drakenstein Municipality the following strategy were followed, namely:
Proper record keeping of data and information regarding the infrastructure (including flow measurements)Historical information of the whole reticulation systems. Training for personal and using the correct equipment for all day to day operations
2015/06/24
6
Measures requiredMeasures required
Refurbish reticulation system using quality materials Preventative maintenance program (maintaining of valves, pumps and equipment before it become problem)Reduce pipe repair reaction time (attend to water burst pipe incidents, i.e. 1 hour of less)
Refurbish reticulation system using quality materials Preventative maintenance program (maintaining of valves, pumps and equipment before it become problem)Reduce pipe repair reaction time (attend to water burst pipe incidents, i.e. 1 hour of less)
Pressure Management
Upgrading & Replacement
of Infrastructure
Meter Replacement
Program
Public Awareness
Water Tariff
Structure
Preventative Maintenance
Hydraulic Modelling
Water Saving Devices
?
2015/06/24
7
Economic Level of Leakage
Meter Errors
Active LeakageControl
Water
Accounting
Errors
Speed and quality
of repairs
Meter
Under
Registration
Pipe Materials Management:
selection,installation,
maintenance,renewal,
replacement
Water
TheftExisting Commercial Losses
Economic TargetFor Commercial
Losses
2015/06/24
8
Current Annual Real Losses
Potentially Recoverable Real Losses
Economic Level of Real Losses
Unavoidable Annual Real
Losses
Pressure Management
Pressure
Management
Active LeakageControl
Speed and Quality of Repairs
Speed and quality
of repairs
Active Leakage Control
Pipe Materials Management:
selection,installation,
maintenance,renewal,
replacement
Active LeakageControl
Speed and Quality of Repairs
Potentially Recoverable Real Losses
Economic Level of Real Losses
Unavoidable Annual Real
Losses
Pressure Management
Pressure
Management
Speed and quality
of repairs
Active Leakage Control
Pipe Materials Management:
selection,installation,
maintenance,renewal,
replacement
Pipeline and Assets
Management: Selection, Installation, Maintenance, Renewal,
Replacement
100% of reported leaks repaired within 48 Hours
2015/06/24
9
Active LeakageControl
Speed and Quality of Repairs
Potentially Recoverable Real Losses
Economic Level of Real Losses
Unavoidable Annual Real
Losses
Pressure Management
Pressure
Management
Speed and quality
of repairs
Active Leakage Control
Pipe Materials Management:
selection,installation,
maintenance,renewal,
replacement
Pipeline and Assets
Management: Selection, Installation, Maintenance, Renewal,
Replacement
50% of reported leaks repaired within 48 Hours
Telemetric SystemTelemetric System
2015/06/24
10
Refurbishment of Welvanpas Booster Pump Station October 2014
Refurbishment of Welvanpas Booster Pump Station October 2014
Valve Chamber (700mmØ) –Van der Stel Street, Paarl 2013
Valve Chamber (700mmØ) –Van der Stel Street, Paarl 2013
2015/06/24
11
Valve Control Chamber- Newton Reservoir, Wellington - April 2015Valve Control Chamber- Newton Reservoir, Wellington - April 2015
PRV installation –Denneburg, PaarlPRV installation –Denneburg, Paarl
2015/06/24
12
PRV & pressure/flow controller installation- Van der Stel Street, Paarl
PRV & pressure/flow controller installation- Van der Stel Street, Paarl
Pressure Reducing Valve
Controller Pressure
Isolating Valve
Pearl Valley Bulk Water Meter – October 2014Pearl Valley Bulk Water Meter – October 2014
2015/06/24
13
Refurbishment of pipework at Van BlerkReservoir, Wellington –September 2014
Refurbishment of pipework at Van BlerkReservoir, Wellington –September 2014
Water Burst pipe – Thom Street, Paarl (30 Oct 2014)
Water Burst pipe – Thom Street, Paarl (30 Oct 2014)
2015/06/24
14
ChallengesChallenges
Funding of projects (operational and capital funding)
Shortage of qualified Technical personal
Vandalism/theft of infrastructure
Funding of projects (operational and capital funding)
Shortage of qualified Technical personal
Vandalism/theft of infrastructure
Thank YouThank You