2012/07/12
Msunduzi Municipality
Improved Service Delivery
through
Non-Revenue Water
Reduction Program
Overview of Infrastructure
• 52 Reservoirs (BPT’s, Reservoirs) – Outlets are metered
• 170 District/Zone Meters
• 200 Pressure Reducing Valves (PRV’s)
• 1600 km of Pipeline – Various diameters
• Purchase approximately 175 Mega Liters(Ml/d) per day
from Umgeni Water . [ 38 Purchase/Sales meters - UW]
•Total Infrastructure cost : R 2.6 Billion [CRC]
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2012/07/12
Background to NRW Program
• Non-Revenue Water is the difference in water volume between that
bought from Umgeni Water and sold to all of Msunduzi
Municipality’s customers
• This difference is made up of both physical leaks from pipes as well
as unmetered customers and illegal connections.
• Non-Revenue Water in the Msunduzi Municipality (excluding
Vulindlela) for 2009/10 FY was previously reported as 63% (corrected
as 38.6%) and for the 2010/2011 FY was reported as 40.9%
• The objective of this program is to improve both operational and
financial efficiency of the Municipality in terms of water service
delivery, and to meet a Presidential mandate of halving water losses
by 2014
2
2012/07/12
IWA KPIs for last 5 Financial Years (Corrected)
Msunduzi Municipality Trends
Msunduzi Municipality
Non-Revenue Water and Inefficiency of Water Trends
45.0%
42.4%
40.9%
Non-Revenue water by Volume (%)
40.0%
38.6%
37.3%
35.0%
30.0%
28.0%
26.5%
25.0%
24.7%
24.6%
23.4%
20.0%
15.0%
13.1%
10.0%
5.0%
0.0%
2006/07
2007/08
NRW by Volume
2008/09
Financial Year
2009/10
2010/11
Inefficiency of Use
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2012/07/12
Average Daily Purchases
200000
increase
180000
A
v
e 160000
r
a
g 140000
e
Stability
Increase
p 120000
u
r
c 100000
h
a
s 80000
e
s
60000
First Water Loss Project
40000
Daily…
20000
0
Jan-95
May-95
Sep-95
Jan-96
May-96
Sep-96
Jan-97
May-97
Sep-97
Jan-98
May-98
Sept-98
Jan-99
May-99
Sep-99
Jan-00
May-00
Sep-00
Jan-01
May-01
Sep-01
Jan-02
May-02
Sep-02
Jan-03
May-03
Sep-03
Jan-04
May-04
Sep-04
Jan-05
May-05
Sep-05
Jan-06
May-06
Sep-06
Jan-07
May-07
Sep-07
Jan-08
May-08
Sep-08
Jan-09
May-09
Sep-09
Jan-10
May-10
Sep-10
Jan-11
k
l
/
d
y
Months
NRW Reduction Program Details
• Total approved program budget for Phase 1 is R22,1
million, of which the Department of Water Affairs is
contributing R3 million
• Awarded in December 2010, but practically started in
January 2011.
• Phase 1 targeted completion 30 June 2011
• Eight unique interventions targeting the reduction of
water leaks and pipe bursts(real loss)
• Eight unique interventions targeting billing improvement
• 2010/11 FY Expenditure R14 858 046 (67%)
4
2012/07/12
Implementing Best Practice
Through the Non-Revenue Water Reduction Program:
• officials are being trained and mentored in best practice
management.
• existing policies are being refined and enforced
• a comprehensive Operations and Maintenance Plan will
be developed and implemented
• a comprehensive Refurbishment Plan will be developed
and implemented
Reducing Water Leaks
Replacement of Ageing Pipeline Infrastructure in the CBD:
• JK Structures was awarded Phase 1A of the pipeline
replacement initiative in June 2011 and began preparatory
work in July 2011
• 3.4km of pipelines has been replaced via trenchless
technology and open-trench replacement
5
2012/07/12
Reducing Water Leaks
Reducing Water Leaks
Leak Detection and Repair:
• Munitech were awarded the Leak Detection and Repair
Contract in February 2011 to carry out work on the
reticulation network
• The Contract was completed in September 2011 and 1
869km or reticulation has been surveyed in the east of the
Municipality
• 1 739 visible and non-visible leaks were located and have
been repaired with an estimated 2.4 Ml/day being saved.
6
2012/07/12
Reducing Water Leaks
Reducing Water Leaks
New PRV Designs:
• Reservoir zones were logged in an effort to quantify
Minimum Night Flows (MNF) thereby helping prioritise
zones with the highest Real Losses
• New PRV designs have been completed on 6 focus areas
taking into consideration the new pressure regime of 3bar
minimum pressure and a maximum of 6bar
• A conservative estimate on savings for installing 27 new
PRVs is 10.1 Ml/day
7
2012/07/12
Reducing Water Leaks
Reducing Water Leaks
Existing PRV Maintenance and Optimisation:
• 62 PRVs and BPTs were visited, inspected and
maintenance on any problems found were fixed
• Optimisation of existing PRVs has been completed for 2
reservoir zones thus far to reduce any excess pressure in a
zone. Slow progress has been made due to line valves
either not being maintained in the past or not being found
• 2 advanced controllers have been installed on PRVs
feeding the CBD. Commissioning and monitoring has
commenced and current results indicate a saving of
approximately R 2 million PA.
8
2012/07/12
Reducing Water Leaks
Peak Flow @
20.0 550 kl/hr
Msunduzi Municipality
Advanced Pressure Control on CBD PRV103
Peak
Peak Flow
Flow @
480
480kl/hr
kl/hr
600
18.0
500
16.0
14.0
10.0
8.0
300
Flowrate (kl/hr)
Pressure (bar)
400
12.0
Pressure @
4.5 bar
Pressure @
5.5 bar
200
6.0
4.0
100
2.0
0.0
2011/08/29 00:00
2011/09/03 00:00
2011/09/08 00:00
2011/09/13 00:00
Logging Period
Downstream Pressure
2011/09/18 00:00
Critical Point Pressure
0
2011/09/23 00:00
Flowrate
Reducing Water Leaks
Reservoir Inspection and Repair:
• 7 reservoirs were visited and prioritised for restoration.
• Hathorns Reservoir is currently been advertised.
• Hathorns by-pass system has been tested successfully to
allow for the winning tenderer to start in earnest once the
award has been made
9
2012/07/12
Reducing Water Leaks
Improving Billing
Meter Maintenance and Replacement of Damaged and Inaccessible
meters:
Exception reports gathered from meter readers from November 2010
till March 2011 were collated and all duplicates removed.
Approximately 10 600 domestic consumer meters needed to be either
replaced or maintained
• 7 Plumbing Contractors from the Municipality’s database were
contacted to tender on a rate’s based meter maintenance and
replacement Contract from March 2011 to October 2011
• To date 6 061 meters have being maintained and 1 157 meters have
been replaced
• Another tender document is about to be advertised for a 24-month
period to continue this initiative
•
10
2012/07/12
Improving Billing
Top Consumer Analysis and Meter Replacement:
• Using past billing information, over a 24 month period,
and 200 of the largest consumers in the Municipality were
chosen and visited
• New design drawings using correct specifications for
above and below meter installations have been
completed
• 85 meters were prioritised for changeout and a tender
document was prepared and will be going through the
Bid-Specification Committee in the next few weeks.
Public Awareness
• Thus far 19 primary and secondary schools have been visited
and presented the Water Awareness Programme.
• A schools soccer tournament was also run very successfully in
October 2011 with 18 schools participating and the Water
Awareness Programme being the central theme using local
businesses as sponsors.
• A poetry contest for all schools is also in the planning phase
and would be implemented towards the middle of this year.
• A total of approximately 1650 posters where placed on street
poles.
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2012/07/12
Public Awareness
• A schools soccer tournament was also run very
successfully in October 2011 with 18 schools participating
and the Water Awareness Programme being the central
theme.
• A poetry contest for primary schools is also in the
planning phase and would be implemented towards the
middle of this year.
• Media articles and school visits are also currently been
planned for water week in March.
• A total of approximately 34 media articles where
published which has as advertisement value of
approximately R 1.2 million.
Keeping the Public Informed
…and on street
poles...
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2012/07/12
Keeping the Public Informed
…in schools...
Keeping the Public Informed
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2012/07/12
Job Creation Opportunities
…student learnership
programs ...
…and labour-intensive
pipe replacment...
Program Budget Requirements
• The total required budget to implement the reduction
of Non-Revenue Water within the Msunduzi
Municipality area of jurisdiction over the 5-year
period is R 205 276 940.70 excluding VAT.
• Of this total R 182 738 638.82 (excl VAT) is capital
budget requirements, and R 22 538 301.88(excl VAT)
is operating budget requirements.
• A total capital budget of R 57 020 837.44 (excl VAT) is
required for meter installation and replacement
purposes
14