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WATER AND WASTEWATER BENCHMARKS IN AUSTRALIA, NEW ZEALAND AND THE PACIFIC
ISLANDS
A COMPARISON OF INITIATIVES AND OPPORTUNITIES FOR ALIGNMENT
Background and Introduction
Why use benchmarks
Why use benchmarksIdentify
opportunities for improvement
Why use benchmarks
Identify best practices
Identifyopportunities for
improvement
Why use benchmarks
Identify best practices
Set internal key performance
indicators
Identifyopportunities for
improvement
Why use benchmarks
Identify best practices
Set internal key performance
indicators
Identifyopportunities for
improvement
Information for stakeholders
Comparison of Areas that are Benchmarked
NON REVENUE WATER
BILLS
METERING
RESIDENTIAL WATER CONSUMPTION
STAFF Recycled water
Greenhouse Gas Emissions
Wastewater sludge
AREAS WE ALL BENCHMARK COMPLETELY DIFFERENTLYFINANCIAL PERFORMANCENETWORK PERFORMANCEQUALITY OF SERVICE
Totally different benchmarks….FINANCIAL PERFORMANCEAustralia New Zealand Pacific Islands• Net profit• Dividend pay-out• Total CAPEX• Operating cost per
property
• Revenue• Capital expenditure as a
ration of budgeted expenditure
• Operating Cost Coverage Ratio
• Debt Service Ratio
• Operating Cost Coverage Ratio
QUALITY OF SERVICEAustralia New Zealand Pacific Islands
• Call answered by an operator within 30seconds
• Fault attendance and response times
• Wastewater treatment level
• Continuity of Service• Quality of water
(chlorine residual)
Some interesting comparisons: consumption
New Zealand Median
Pacific Median Australian Median
0
50
100
150
200
250
litre
s/pe
rson
/day
DIFFERENCES: Australia reported per property
Some interesting comparisons: metering
New Zealand average
Pacific average0.00%
10.00%20.00%30.00%40.00%50.00%60.00%70.00%80.00%
Case Studies of International benchmarking: European Benchmarking Commission
EMPLOYEE EXCHANGEGOOD PRACTICE CASE STUDIES
Some interesting comparisons: tariffs
Median NPR charge
Median Urban Australian Charge
$0.00
$200.00
$400.00
$600.00
$800.00
$1,000.00
$1,200.00
$1,400.00
Average for pacific region consuming
72m3 $USD
$0.00
$200.00
$400.00
$600.00
$800.00
$1,000.00
$1,200.00
$1,400.00
Household tariffs for 200m3 year Household tariffs for 72m3 year
Some interesting comparisons: tariffs
Median NPR charge
Median Urban Australian Charge
$0.00
$200.00
$400.00
$600.00
$800.00
$1,000.00
$1,200.00
$1,400.00
Average for pacific region consuming
72m3 $USD
$0.00
$200.00
$400.00
$600.00
$800.00
$1,000.00
$1,200.00
$1,400.00
DIFFERENCESHousehold tariffs for 200m3 year Household tariffs for 72m3 year
200m3/year 72m3/year
Limitations of benchmarking
• Different countries collect different data• Different definitions interpretation• Measuring the wrong indicator might take us in the
wrong direction• Different system influences can lead to misleading
conclusions
Not really a comparison… Water Loss
0.0030.0060.0090.00
120.00150.00180.00210.00240.00270.00
Average Pacific No...0
306090
120150180210240270
Real Losses Non Revenue Water
Not really a comparison… Water Loss
0.0030.0060.0090.00
120.00150.00180.00210.00240.00270.00
Average Pacific No...0
306090
120150180210240270
Real Losses Non Revenue WaterDIFFERENCES
-Connection density-System pressure
-Unbilled consumption-Unauthorised consumption
Selection of fit for purpose indicatorsOBJECTIVE GOOD PRACTICE PERFORMANE INDICATOR FOR LEAKAGE
Volume per year
Litres/ service connection
M3/km mains
% of system input volume
% of water supplied
Infrastructure Leakage Index with Pressure
Set targets and track performance of an individual system
Yes, for large systems
Yes Yes No No Only if pressure management completed
Technical performance comparisons of different systems
No No No No No Yes
Case study of benchmarking using the IWA Methodology The Infrastructure Leakage Index in Malta:
FROM 20 to 2.1!*see leaksuite.com
Adoption of 5 forces model
Pressure Control
300 Zones Checked Weekly
What could we do now….
• Include Australian and New Zealand data that aligns in IBNET database
• Consider alignment of indicators when developing reports
• Share our reports with each other, with stakeholders involved in funding and operations
Over time……• Share best practice learnings• Identify twinning/training and collaborative
partnership opportunities
CONTACT:lesley.smith@waternz.org.nz
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