Water Supply Asset Management Plan - Tweed Shire · 2013-10-11 · Water Supply Asset Management...

Tweed Shire Council Water Supply Asset Management Plan

April 2011

Version Control

This Document is a live Council document and is subject to periodic review. The validity and currency of the document is critical in applying its content as it contains significant asset management and performance data that is “real-time” based.

If you are reading this document leases check the version date below to make sure that the document is correct.

Version Version Date Status

V1 April 2011 Final Draft - Water Unit Submission to EMT

V2 April 2011 Final Draft - Water Unit Submission to Council for Exhibition

Water Supply Asset Management Plan

Contents i

Table of Contents

1 Introduction ................................................................................................................................................. 1

1.1 Background and Rationale for Council’s Involvement ......................................................................... 1

1.2 Community Strategic Plan and Objectives ........................................................................................... 1

1.3 Service Contribution to Community Outcomes .................................................................................... 2

1.4 Water Supply Principal Objectives ....................................................................................................... 3

1.5 Community Satisfaction with the Service ............................................................................................. 3

1.6 Community Input Approach.................................................................................................................. 4

2 Levels of Service......................................................................................................................................... 4

3 The Existing Situation ................................................................................................................................ 7

3.1 Public Water Supply Systems .............................................................................................................. 7

3.2 Overall Condition of Assets .................................................................................................................. 8

3.3 Risk Management .............................................................................................................................. 10

4 Maintenance and Operating ..................................................................................................................... 12

5 Future Demand/Utilisation ....................................................................................................................... 14

6 New Capital Expenditure .......................................................................................................................... 15

6.1 Proposed Future Capital Works Programme ..................................................................................... 15

6.2 How Growth Capital Works are to be Funded ................................................................................... 15

6.3 Other Capital Works Policies ............................................................................................................. 16

7 Renewals Capital Expenditure ................................................................................................................ 16

8 Funding the Annual Net Cost .................................................................................................................. 17

9 Licences/Property Designations ............................................................................................................. 18

10 The Supply of Water for Fire Fighting Purposes ................................................................................... 18

11 Integrated Water Cycle Management ...................................................................................................... 18

11.1 Demand Management ........................................................................................................................ 19

12 Organisation and Management ............................................................................................................... 21

12.1 Service Delivery Options .................................................................................................................... 23

12.2 Standards and Guidelines .................................................................................................................. 24

13 Asset Management Processes, Systems and Data Management ........................................................ 24

13.1 Quality Management .......................................................................................................................... 25

14 Improvement Plan ..................................................................................................................................... 25


Page 1

1 Introduction 1.1 Background and Rationale for Council’s Involvement The NSW State Government has delegated to Local Government the responsibility for provision of water supply services for NSW country towns. The statutory framework for provision of this service by Councils is provided by the Local Government Act 1993.

1.2 Community Strategic Plan and Objectives Council’s Vision for the Tweed Shire Area as a basis for the Tweed Community Strategic Plan 2011/2021 is:

The Tweed will be recognised for its desirable lifestyle, strong community, unique character, and environment and the opportunities its residents enjoy.

with a mission statement of:

Working with the community and partners , provide leadership in facilitating and delivering services that manage growth sustainably, create opportunity and enhance the value of our

civic and natural assets for this and future generations.

A key objective of the Strategic Plan under the theme ‘Civic Leadership’ which applies to Council’s water supply service is:

Water Supply Objective (1.3.3):

To properly manage and maintain existing and future assets based on principles of equity and sustainability.

A key objective of the Strategic Plan under the theme ‘Supporting Community Life’ which applies to Council’s water supply service is:


To provide a secure, high quality and reliable drinking water supply service which meets health and environment requirements and projected demand.

A key objective of the Strategic Plan under the theme ‘Caring for the Environment’ which applies to Council’s water supply service is:


To manage water resources sustainability and minimise impact on the environment by achieving more integration of water supply, wastewater and stormwater services.


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1.3 Service Contribution to Community Outcomes The Community Strategic Plan outcomes to which the water supply service primarily relates are shown in Table 1.

Table 1 Community Outcomes

Community Outcome How the Water Supply Service Contributes

Civic Leadership

Responsible and transparent decision making to set the overall direction and long-term goals for the Shire.

By ensuring water supply services are provided within a strategic business planning framework.

By ensuring legislative requirements are met in delivering the service.

By ensuring community input is provided for and its expectations and capacity to pay are considered in setting levels of service.

By ensuring assets are properly managed within an a whole of life cycle cost approach

Supporting Community Life

People are healthy, safe, connected and in harmony with the natural environment, to retain and improve the quality of community life.

By ensuring high quality reliable water supply services are provided for urban properties and systems are properly managed, maintained and monitored.

By ensuring fire fighting capacity is available for urban properties

Strengthening The Economy

The region’s economic base is strengthened and diversified in a way that complements the Tweed’s environmental and social values.

By ensuring aadequately located and pressured connections for fire fighting are provided.

By ensuring the water supply service is cost effective.

By ensuring a long-term perspective is incorporated into the management and planning decisions for current and future service.

By ensuring water supply contingencies are provided for in the service as appropriate.

By ensuring that the service can meet sustainable growth projections.

Caring For The Environment

Council and community value, respect and actively participate in the care and management of the natural environment.

By managing the extractions of fresh water to minimise the detrimental effects on the natural environment.

By ensuring the water supply service considers and addresses issues related to the environment.

By achieving more integration of water and water supply services.

By promoting water cycle education


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1.4 Water Supply Principal Objectives Council’s principal objectives for the provision of water supply services are:

• to provide water supply services within a strategic business planning framework

• to meet legislative requirement including licence requirements regarding surface and ground water supply extraction conditions

• to provide additional system capacity to meet sustainable growth projections

• to efficiently and sustainably operate the water supply systems

• to provide an equitable, responsive and cost effective water supply service

• to provide a high quality, reliable and sufficient water supply service

• to promote water cycle education including conservation and reuse

• to manage assets on a whole of life cycle cost basis to ensure the on-going effective provision of water supply services

• to put in place a sound management regime for all matters relating to the provision of the water supply service

Council has several roles with respect to water supply services:

• to co-ordinate the setting of community outcomes for water supply services

• to monitor and report the progress that is being made towards achievement of those outcomes

• to provide water supply services to the urban community

• to properly manage the water supply assets

• to ensure that all customers are provided with safe and adequate water supplies

• to ensure that fire hydrants are installed in the reticulated areas, and that they are maintained and charged with water

Council services the main urban communities of the Shire. Council works with the wider rural community to promote the use of alternative water supply systems such as rainwater tanks, groundwater sources and recycled water.

1.5 Community Satisfaction with the Service Council has undertaken an extensive community engagement campaign via several means to inform the community and encourage public input into the Community Strategic Plan 2011/2021. The plan states that “submissions called for Council to focus on its core roles and Council will respond with a rigorous program to manage and maintain council assets…”.

Leading issues conveyed through an online survey, forums and in written submissions related to the provision of water supply and wastewater services included:

• Restrictions on population growth

• Decisions based on sustainability

• Listen to / act upon community feedback

• Transparency in consultation / decision making

• Water management, including rain water tanks

• Opposition to dams

• Protect waterways

• Protect biodiversity.


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Independent research conducted by phone survey of 300 residents also provided a sample of opinion which reflects the wider views of the Tweed community. Survey participants indicated the most important issues confronting the Tweed included, amongst others:

• Quality water supply, wastewater and garbage services

• Protecting its natural attributes / biodiversity Other related results were:

• Water supply, wastewater and garbage services rated an average 8/10 in importance and 7/10 on how well they were being provided.

• 13% indicated water supply and wastewater services were one of three areas important enough to warrant allocating more money (within a limited budget). In contrast, it was found that the same percentage chose to cut allocations from these areas in preference to other areas.

1.6 Community Input Approach Council endeavours to accommodate the interests of stakeholders and will involve them in the decision process at a level in the accordance with the Council’s Consultation Policy and as required by statute.

Comment and community review is received as part of Council’s consultation in preparing the 4 year delivery programme for water services. Individual strategies and policy will be publically exhibited for comment as part of their preparation.

2 Levels of Service The key water supply levels of service attributes that Council desires to be measured against are:

• environment sustainability and efficiency of service delivery

• quality of water supplied

• reliability, availability and adequacy of the water supply systems including ability of reticulation to provide water for fire fighting purposes

• system capacity to accommodate growth

• affordability to customers

• responsive, effective and equitable service to customers

• meeting legislative requirements

The following table details customer’s expectations for the water supply service and Council’s service indicators and target levels. The information is grouped under service attributes for the quadruple bottom line categories of ‘environment’, ‘social/cultural’, ‘economic’ and ‘governance’.


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Table 2 Water Supply Levels of Service Quadruple

Bottom Line Service

Attributes Customer Expectations Water Level of Service Indicator Target

Environment (protecting the environment)

Sustainable

Potential environmental will be identified and properly managed by Council in providing and managing the service.

Energy consumption Less than 180 kWh per 1000 connected assessments

Less than 160 net tonnes CO2-equivalents of GHG emissions per 1000 connected assessments

Efficient

Percentage of unaccounted for water. Less than 10% of annual treated water production volume.

Average annual residential water supplied (kL/property) 180 kL/year

Average annual residential water supplied (L/p/day) 180 L/p/day

Average annual water supplied (L/p/day) 300 L/p/day

Percent increase in annual volume of water extracted Less than percent increase in population growth

% of extracted water treated and delivered to system Greater than 95%

Social/cultural) (supporting

community life)

Quality

Connected properties will receive good quality drinking water delivered under pressure, which is clear and has no obvious taste or smell.

Percent of time treated water supplied to ADWG. 100% of the time.

Number of water quality complaints Less than 3 per 1,000 connected assessments per year

Number of moderate / major water public health incidents. Nil

Reliable Connected properties can be assured of a continuous supply.

Unplanned interruption time. Service to 95% restored in less than 5 hours.

Notified Planned interruption time. Service to 95% restored in less than 12 hours.

Number of unplanned interruptions. Less than 35 per 1000 connected assessments per year.

Number of water main failures. Less than 10 breaks per 100 km of mains per year.

Number of water service connection failures. Less than 10 breaks per 1000 connected assessments per year.

Percent of time water restrictions applying. 0%

Available Properties designated rateable to water supply are able to connect to the system.

Residential water services installed in 7 working days of application 100%

Sufficient Council will provide a water supply service of sufficient capacity

Percent of properties meeting a minimum flow of 4.5 L/min and pressure of 200 kPa at the property boundary 100%

Maximum water pressure at the property boundary of 780 kPa. 100%


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Quadruple Bottom Line

Service Attributes Customer Expectations Water Level of Service Indicator Target

Social/cultural) (supporting community life

Sufficient

Council will provide a water supply service of sufficient capacity

Percent of properties meeting design flow and pressure as determined from the current land use zoning density and Council's publicised design criteria 100%

Water will be provided (and appropriately located) for fire fighting.

Minimum flow and water pressure at hydrant for fire fighting 11 L/s. at 150 kPa (residential). 20 L/s. at 150 kPa (commercial, industrial, high rise). 15 L/s. at 150 kPa (local commercial)

Economic (strengthening the economy)

Capacity Council will provide a water supply service sufficient to meet planned demand.

Planned annual capital expenditure for growth. Greater than 85%

Affordable The service is being provided at a reasonable cost.

Annual bill based on 200 kL/annum will be comparable across region and metropolitan centres No more than10% annual increase

Governance (civic

leadership)

Responsive

Information and requests in relation to the service and complaints will be dealt with properly and in a timely manner.

Notification time for planned interruptions to affected connected assessments. 48 hrs

Availability of information on problems with water supply Information on problem provided on Council’s Service Centre line within 30 mins.

Equitable Customers are treated equally with charges fairly calculated and applied.

A user pays system is implemented (fixed service charge and pay for each kilolitre of water used) Annual review and adoption of user pays tariff charges

Compliant Council meets its legislative requirements. Number of occurrences where legislative requirements are not met Nil breaches

Effective Customers satisfied with the level of service provided. Number of water supply system customer requests Less than 30 per 1000 connected assessments


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3 The Existing Situation 3.1 Public Water Supply Systems Tweed Shire Council owns and operates water supply systems in three discrete areas - Tweed District, Uki and Tyalgum.

The treatment plants servicing the Tweed District and Uki areas comply with the requirements of the Australian Drinking Water Quality Guidelines. The Tyalgum plant is to be upgraded to meet these requirements.

Urban assessments are serviced with a connection to their respective water supply system. At present Council has no plans to supply a water service to any of the Shire rural areas, which typically rely on rainwater tanks.

Key water supply statistics are provided in Table 3 and the age and material profiles for reticulation and trunk main pipelines in Figures 1 and 2

Table 3 Water Supply Statistics

Permanent population supplied 73,534 Number of residential connections 32,284 Number of non-residential connections 1,976

Raw water transfer mains length 3 km

Reticulation mains length 505 km

Trunk mains length 185 km

Total length of water mains 693 km

Pumping stations - potable and non-potable 27

Number of service reservoirs 41

Volume Treated (2009/10) 10,550 ML/yr

Figure 1 Water Pipeline Age Profile


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Figure 2 Water Pipeline Material Profile (by % of total Length)

3.2 Overall Condition of Assets

Pipeline Assets Council has developed a systematic documented process for condition grading and assessment of the likelihood of failure for pipeline assets based on visual observations of pipe structural condition and performance history data (e.g. main breaks). Where this information is not available a coarse condition grade is determined from age and material type. Likelihood of failure in conjunction with consequence of failure derived from spatial information determines the overall risk - from ‘low’ to ‘extreme’. The risk together with hydraulic capacity drives the development and implementation of maintenance and improvement programmes, including:

• Water main renewals and rehabilitation

• Critical water mains condition assessment

• Repairs to water mains as necessary

• Water supply system augmentation works to increase capacity to meet peak demand days, fire fighting flow requirements etc.


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Figure 3 Water Pipeline Condition Profile (by % of total Length)

Non-pipeline Assets

Figure 4 Water Pumping Stations Overall Condition Profile


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Figure 5 Reservoirs Overall Condition Profile

Figure 6 Water Treatment Plants Overall Condition Profile

3.3 Risk Management Council has recently adopted an Enterprise Risk Management Framework consisting of a Risk Management Policy and accompanying Risk Management Plan in accordance with AS/NZS 4360:1999 Risk Management. The associated documents establish the standards, systems and processes for evaluating and managing risk across Council and are adopted by the Water Unit to assess the risks to the water supply business function.

An analysis of the risks to the business functions has been undertaken in accordance with Council’s likelihood and consequence risk rating process, with the addition of the ‘consequence criteria ‘Public Health’. Key risk categories considered were:

• Environmental

• Health and Safety

• Strategic

• Fraud / Corruption

• Financial

• Staffing

• Operational Activities

• Legal / Compliance

• Reputational

• Public Safety and Well Being


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The overall risk assessment comprised an evaluation of the effectiveness of single or multiple ‘controls’ to reduce the level of each risk. Action plans are required to be prepared for where the remaining residual risks rating are still categorised as ‘extreme’, ‘very high’ and ‘high’.

Business Continuity Management Council has developed a suite of priority Business Continuity Plans to respond to possible disruptions to vital water supply functions from a range of threats. Each plan documents business contingency arrangements and procedures. These are intended to enable Council to respond to an event that lasts for an unacceptable period of time and be able to return to performing its critical functions as soon as possible after the interruption event.

The priority plans were identified via a risk evaluation of the possible key threats to critical water supply functions according to Council’s risk evaluation protocol. The high level risks for which continuity plans have been developed to date are major contamination of the raw water or treated water supplies, prolonged drought, major flood and tsunami.

The individual plans feed into Council’s Corporate Risk Management Plan as a ‘control measure’ of an inherent risk. Council intends to prepare the balance of individual continuity plans in priority order of risk rating.


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4 Maintenance and Operating Approach The water supply assets of Council are owned and operated by the Operations Section of the Water Unit in accordance with established policies and procedures.

Each of the water supply system assets is maintained and operated to a standard to ensure:

• the standard of the asset does not decline below a level at which the standard of service can be achieved

• the appropriate level of service is maintained

• the consumers get value for money

A maintenance management strategy based on a Reliability Centred Approach and associated plan has been developed for the water supply systems. The maintenance strategy and plan is being implemented through the implementation of computerised maintenance management and geographical information systems.

The estimated cost of operations and maintenance for the next ten years is shown in Table 4 and Figure 7 following. These costs exclude support costs - management, engineering and supervision, interest expenses and payroll tax. The significant increase in operating costs for pump stations is primarily related to an allowance in the predicted increases in electricity costs and the high level of treatment being provided. Other costs have been increased to allow for the CPI increase and anticipated growth.

Figure 7 Operation and Maintenance Expenditure Proposed 2011/12 - 2020/21 (excludes support costs)


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Table 4 Operation and Maintenance Costs 2011/12 – 2020/21 ($000’s) (excluding support costs)

2012 2013 2014 2015 2016 2017 2018 2019 2020 2021

Dams and Weirs

Operation 180 156 161 166 172 178 185 191 198 205

Maintenance 203 209 215 221 227 233 239 246 252 259

Mains

Maintenance 1,377 1,403 1,430 1,458 1,485 1,514 1,543 1,573 1,603 1,634

Reservoirs

Operation 123 127 131 136 140 145 149 154 159 164

Maintenance 398 111 114 117 120 123 126 129 132 135

Pumping Stations

Operation (excl. energy) 58 59 61 63 65 67 69 71 73 75

Energy 1,064 1,192 1,335 1,495 1,674 1,875 2,100 2,352 2,634 2,951

Maintenance 250 258 265 273 281 289 297 305 314 323

Treatment

Operation (excl chemical) 1,000 1,041 1,085 1,131 1,179 1,232 1,287 1,346 1,407 1,474

Chemical 620 639 658 678 698 719 740 763 785 809

Maintenance 126 130 134 137 141 145 149 154 158 162

Other

Operation 688 708 729 751 773 796 819 844 869 896

Maintenance 524 539 554 570 586 602 618 634 651 668

Water Purchase 21 22 23 23 24 25 25 26 27 28

Total Annual Operations & Maintenance

6,633 6,594 6,895 7,218 7,565 7,942 8,347 8,787 9,263 9,782


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5 Future Demand/Utilisation The historical growth in connected properties is shown in the figure below.

Figure 8 Water - Properties Connected

Council recognises that future demands for water supply services will be influenced by:

• Population growth and demographics

• Changes in community expectations

• Industrial demand

• Technological change

• Changes in legislation

• Integrated Water Cycle Management initiatives.

Technological change has the ability to impact on the demand for a service. These changes can reduce or increase the demand for water supply infrastructure. Relevant examples are:

• household water saving devices such as dual flush toilets, low-flow shower heads and front-loading washing machines which reduce water demand

• use of rain water tanks for some internal household use

• greywater re-use schemes

Similarly, technological advances can have an effect on the cost of maintenance and operation of assets. Relevant examples are:

• advances in treatment process may make further quality improvements cost effective, but will likely raise overall costs of service

• advances in effluent treatment may enable greater use of effluent and stormwater in the place of potable water will increase overall cost of service

• improvements in pump efficiency and network design will decrease power consumption

• material improvements increase the base lives of assets

• advances in water leakage detection


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The potential impact of these technologies is currently unquantifiable, so no direct allowances have been made for them in this Plan.

6 New Capital Expenditure 6.1 Proposed Future Capital Works Programme New works are those works that create a new asset that did not previously exist, or works that upgrade or improve an existing asset beyond its existing capacity. They result from growth or changes to levels of service. Assets may also be created at no direct cost to Council (i.e. reticulation in subdivisional developments).

The creation of new assets is approached differently depending on whether it is an urban or industrial development, within or adjacent to an existing water supply system, or whether it is the introduction of a new system into a previously un-serviced area.

Development within, or adjacent to existing water supply systems is typically driven by a developer subdividing land. These developments are guided and controlled by zoning and development control plan rules, administered under the Environmental Planning and Assessment Act. As part of the development consent process, the design of all water supply assets which will be vested to the Council, are checked against Council Development Standards.

Expenditure on proposed new and upgrade capital works (excluding developer provided assets) over the next 10 years is shown as follows.

Figure 9 CAPEX New and Upgrade Works Expenditure Proposed 2011/2012 – 2020/2021

6.2 How Growth Capital Works are to be Funded Council funds the cost of the growth component of new capital works by the recoupment of developer contributions collected for such works and raising loans to cover cash flow requirements.

Developers pay a contribution levied as part of the Development Application process, for the capacity taken up by the development. The Water Development Serving Plan (DSP) sets out the growth-related works to be funded by developer contributions and the associated charges per Equivalent Tenement (ET). Additional works, not identified in the DSP have to be funded by the developer directly and work within the development site is to be funded and constructed by the developer to Council’s standards.

The 2011/12 developer charge payable is $11,020 per ET and is increased annually by CPI and is fully reviewed every 5 years.


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6.3 Other Capital Works Policies Other key financial policies relating to water supply capital programming and expenditure are listed below.

• The repayment period for all new loans will generally be 20 years except for shorter life assets. Council regularly reviews its current loan portfolio to determine whether savings can be made.

• The new capital expenditure forecasts for the next ten years are indicative only and will be updated on a rolling basis. The capital forecasts that are presented cannot be interpreted to mean that the associated work will always be undertaken as the whole Plan is subject to change, primarily as a result of changes in the rate of growth and where the growth is occurring.

• Except in the event of there being a serious environmental or health issue (in which case Council may instigate action), extensions and new water supply systems will only be considered if:

• More than 80% of affected residents support the scheme; and

• they, and/ or sub-dividers and developers are prepared to pay the full cost to implement the scheme; and

• they are responsible for and maintain and meet all annual costs of operating the system along with meeting ongoing legislative and licence requirements imposed by state government authorities and Council

Council may consider maintaining the scheme and meeting the annual costs if the systems were constructed to Council’s standards, the annual costs are comparable to current costs per connection and all properties pay all of the annual access and users charges as applicable.

7 Renewals Capital Expenditure Renewal expenditure is major work that does not increase the asset’s design capacity but restores, rehabilitates, replaces or renews an existing asset to its original capacity. Work over and above restoring an asset to original capacity is classified as new works expenditure.

Assets are considered for renewal:

• as they near the end of their effective working life

• where the cost of maintenance becomes uneconomical

• if the levels of service are not being met

• when the risk of failure of critical assets is sufficiently high

Renewal decisions are based on the cost effectiveness of renewing the asset and the assessment of the acceptability of the risk of asset failure. Renewal decisions are supported by records of failures (including main breaks), work carried out, annual maintenance and repair reports and staff knowledge of the systems. In addition, the theoretical life expectancies of asset components have been used for the purpose of financial projections.

The monitoring of asset reliability as part of planned maintenance, various inspections, operational activity and the investigation of customer complaints identifies non-performing assets. Indicators of non-performing assets include:

• structural failure

• repeated asset failure

• loss of hydraulic performance

• ineffective and/ or uneconomic operation

• insufficient treatment

• excessive energy consumption

The cost of renewal capital works is estimated to total approximately $30 million over the next ten years. The cost of renewal work is funded from operational revenue through a provision for the annual depreciation of wastewater assets. Council’s aim is to preserve the service potential capacity of all of its water supply assets on a continuous basis. A significant number of these renewals projects will be incorporated with new capital


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projects or in conjunction with road works undertaken by Council, to provide for increased capacity to cater for the projected growth in the Shire.

Figure 10 CAPEX Renewal Expenditure Proposed 2011/2012 – 2020/2021

8 Funding the Annual Net Cost Water supply pricing for customers are in accordance with NSW Office of Water guidelines. Residential properties pay a uniform annual access charge. Business Assessments pay the water access charge based on the residential charge multiplied by the ratio of the cross sectional area of their water meter compared to a minimum 20mm size.

All water used as measured by Council’s water meter at each property is charged to each consumer. This volumetric charge is on a per kilolitre basis and includes a step price increase for residential properties (excess water charge).

The projected total annual costs (excluding depreciation) and the proposed method of funding for the next ten years, is indicated in Figure 11 as follows.


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Figure 11 Summary of Forecast Cash Flow 2011/12 – 2020/21 ($000’s)

9 Licences/Property Designations A very important aspect of the water supply function is in ensuring that the Shire’s natural water sources are managed responsibly. Surface water licences from the NSW Office of Water for the abstraction of natural water are held by Council for the operation of all water supply systems. These usually stipulate the quantity of the water allowed and a maximum rate for its extraction. A licence from the Department of Environment, Climate Change and Water is held that stipulates the allowable quantity and quality of discharge of wastewater from the Bray Park water treatment plant.

10 The Supply of Water for Fire Fighting Purposes The reticulated systems provide for fire fighting with the use of fire hydrants. Council does not permit public water systems that cannot be supplied by gravity from the local service reservoir to meet fire fighting requirements as set out by Council’s design specification D11 as it references the Water Reticulation Code of Australia. Some high areas may also be serviced by an on-demand pressure booster system.

Systematic testing of fire hydrants is carried out and a program of hydrant repairs/replacements is in place for those hydrants not meeting minimum flow or pressure requirements.

11 Integrated Water Cycle Management Council is required to develop and implement an Integrated Water Cycle Management Strategy (IWCM). IWCM is the integrated management of the water supply, wastewater and stormwater services within a whole of catchment strategic framework and provides a long term focus on their integrated delivery. A goal of the strategy is to reduce where possible surface and ground water source extractions by appropriate substitution of effluent, stormwater and rainwater tanks along with the implementation of demand management initiatives.

Council has prepared a Context Study and Strategy Report in order to define the catchment, water resource and urban issues faced and to outline a broad strategy for the future.

From the report Council adopted a range of IWCM Strategy actions, in December 2006, which have been regularly reviewed and updated in February 2009 and in January 2011 which are listed below.


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Table 6 IWCM Strategy Action Plan (as updated Feb. 2011)

Item Action

Overarching Strategies and Plans

Develop Quality Management Plan

Develop Environmental Management Plan

Implement Asset Management Plans

Implement WSUD and ESD Principles

Liaise with proponents of developments to promote WSUD and ESD

Implement Water Education and Training

Urban Water

Adopt Demand Management Implementation Plan

Adopt Drought Management Implementation Plan

Develop Risk Based Water Quality Management Plan

Develop and Implement Leakage Reduction Program

Determine preferred option for the augmentation of the water supply

Procure upgraded WTP at Tyalgum

Investigate and determine requirement for upgrading the WTP at Uki

Urban Wastewater Optimise existing wastewater infrastructure

Determine options for augmentation of the wastewater Infrastructure

Maximise water recycling (effluent reuse) opportunities

Urban Stormwater Review Urban Stormwater Quality Management Plan

Update Development Design Specification D7 – Stormwater Quality

Identify targeted retrofit program for retention/treatment hotspots

Catchment Management Review On-site Sewage Management Strategy

Develop Drinking Water Catchment Management Plan

11.1 Demand Management Water Supply demand management aims to modify customer demands for services (quality, quantity, pressure and reliability) such that water is conserved in order to:

• promote water conservation

• optimise utilisation/performance of existing assets

• reduce or defer the need for new assets

• meet Council’s and Government strategic objectives (including social, environmental and political)

• deliver a more sustainable service

• respond to customer needs

The residential consumption rate for all Tweed systems was an average 201 L/p/day in 2007/08, 205 L/p/day in 2008/09 and 197 L/p/day in 2009/10.

Council’s 2013 residential target is 180 L/p/day with a whole of shire usage target of 300 L/p/day.


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Council has implemented restrictions on the Tweed District system to limit demand only once since the construction of the Clarrie Hall Dam in 1983, during the 2002/03 drought. Ideally, Council aims not to introduce harsh restrictions on the water supply in the future other than during prolonged drought or for emergency purposes.

Water loss management is a component of a Demand Management Programme. Unaccounted for water which comprises illegal consumption, system leakage and under-registration of meters was approximately 12 to 15% of the overall water produced for the 3 years 2007/08 to 2009/10. This is relatively high compared to the present target of 10% (and 7% long term).

A Demand Management Program is a key element in Council’s IWCM Strategy. In response, Council is now undertaking an Implementation Plan for recommendations developed as part of the Demand Management Strategy. This strategy is underway in stages, focusing firstly on residential and secondly on non-residential water use. A fulltime Demand Management Program leader is employed whose primary role is to implement the recommendations.

The main project elements being implemented for the Demand Management Strategy over a 3-year timeframe are listed below. It is envisaged that a number of activities will continue on an ongoing basis, remaining an integral part of Council’s Integrated Water Cycle Management Strategy.

• DMS Program Planning

• Performance Tracking Framework

• Water Billing Process

• Residential Retrofits and Rebates

• Rainwater Tank Program

• Top 20 Water Users – Non-Residential Program

• Council Audits – Training of TSC Staff

• Open Space Irrigation Guidelines – Water Efficient Garden Policy

• Unaccounted for Water

• Other Major Water Users – Top 100

• Permanent Water Restrictions

• Recycled Water Projects

• Leakage Reduction Program

• Water Sensitive Urban Design/ESD.

Water conservation is presently enforced by the following:

• All new dwellings must contain six litre/three litre dual flush toilet cisterns and shower heads that deliver less than 9 litres/minute. Any replacement toilets or shower heads must also comply with these requirements.

Council encourages:

• Installation of water efficient shower roses, low volume washing machines and dishwashers. A new residential home retrofit and rebate scheme for water efficient shower heads is being developed and implemented. Approximately 50% of all households have participated in past showerhead programs so this new program will target those households yet to take part.

• Collection of stormwater for garden irrigation and drip irrigation systems to deliver water to the plant roots and minimise runoff.

• Installation of a rainwater tank connected to external uses, toilet flushing and cold water to washing machines is proposed in all new and existing development areas. Council’s target is for 100% of new single dwellings to have a minimum 5,000 L rainwater tank connected to a minimum 160 m2 roof area. Appropriately sized tanks connecting 80% to 90% of the roof area are recommended for multi dwellings and other buildings. Rainwater tanks supplement the bulk water supply and reduce the intensity and frequency of stormwater runoff from urban areas.


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The take-up of rainwater tanks in response to Council’s new policy will be monitored with a view to offering a rebate if it is warranted. The NSW Government rebate on rainwater tanks is due to finish on 30 June 2011.

Council will liaise with the Department of Planning to resolve any differences between Council’s rainwater tank policy and the State Government’s BASIX requirements for development.

12 Organisation and Management Council’s structure provides for four (4) divisions with clearly defined responsibilities and functions shown below.

Table 7 Function / Responsibility of Council Divisions

Division Function / Responsibility

Technology and Corporate Services Finance, Revenue and Customer Service, Corporate Governance, Information Technology, Human Resources

Planning and Regulation Development Assessment, Planning Reforms, Development Engineering, Regulatory Services, Building and Environment Health

Community and Natural Resources Water, Community and Cultural Services, Natural Resource Management, Waste Management, Entomology and Administration

Engineering and Operations Design, Works, Contracts, Planning and Infrastructure, Recreation

The structure also includes Business and Economic Development and Communications and Marketing units.

The Water Unit is within the Community and Natural Resources Division and is responsible for the Water Supply and Wastewater functions of Council.


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Table 8 Function / Responsibility of Community and Natural Resources Division

Community and Natural Resources

Function / Responsibility

Water Water Supply Function, Wastewater Function, Mechanical & Electrical Services, Laboratory Services and Water Cycle Education

Community and Cultural Services Art gallery, Museum, Cultural, Community

Natural Resource Management Waterways, Coastal, Biodiversity, Sustainability and Sustainable Agriculture

Waste Management Waste, Environment Education and Landfill

Entomology Insects and Native Animals

Administration Administrative and Secretary Support

Figure 12 Organisational Chart - Community and Natural Resources Division


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The Manager, Water has the responsibility for the delivery of the Water Supply function. Key positions and responsibilities within the Unit are:

• Strategic and Assets Engineer o Strategic business planning, including determining customer service levels, risk

management, pricing and Policy o Asset management including development of asset renewals and replacement programs o Develop and maintain policies and standards o Coordinate development of forward Capital Works programs o Coordinate development of Unit’s systems and procedures

• Capital Works Engineer o Coordination and effective and timely implementation of the water and wastewater capital

works program. • Operations Engineer

o Operation and maintenance of Council’s water and wastewater systems to meet levels of service required by Government, Council and the community

• Laboratory Coordinator o Operate the Council’s Water Quality laboratory

• Mechanical and Electrical Coordinator o Provide Mechanical and Electrical Services to support operations, maintenance and capital

work activities o Develop and maintain policy and standards

• Business Accountant o Financial management of the water supply and wastewater activities.

12.1 Service Delivery Options Council has a number of options available for the delivery of water supply services to the community. The options and status include:

• Full service contract • Full in-house service provision • Contracting out part of the services • Sharing of resources with Councils or Government Departments • Private public partnerships

Councils utilises a combination of maintaining an in-house capability for core activities and contacting out parts of the service provision for specialist consulting, construction services, which includes knowledge transfer for staff training and up skilling and for dealing with varying workloads.

In delivering the service the role of the asset manager (as the agent of Council) must be retained in house which comprises of:

• establishing and identifying the actual cost of owning and operating assets • aligning the cost of assets with the organisation’s business or service direction • reducing the recurrent costs of asset ownership without impacting on the business or service level

requirements • maximising the utilisation of current and future assets to avoid unnecessary capital expenditure • maintaining a lifecycle approach to the strategic planning and management of the assets and

facilities • establishing transparency and accountability for the costs associated with the ownership and

management of assets • providing effective processes, procedures, information management ‘tools’ and procurement

strategies to enable the effective delivery of services.


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12.2 Standards and Guidelines Council standards and specifications for the construction of assets will reflect the best current technologies, national standards and legislative requirements. All new water supply assets constructed by or for Council or acquired from subdivision developments will be constructed in accordance with the latest edition of the relevant standard, updated regularly to incorporate relevant experiences and changes in best practice.

Development standards will form the technical basis of all renewal contracts. In evaluating renewal options the life cycle costs will be considered in the interests of minimising the total long-term costs while still meeting the required levels of service.

The standardisation in designs and specifications will be considered in the interests of facilitating replacement and operational simplicity and effectiveness, and where beneficial to Council may be adopted.

13 Asset Management Processes, Systems and Data Management The majority of the components of the piped network including as-built data are listed in electronic format in an up to date GIS spatial software system. Each component has been given a unique identifier which indicates the scheme and type of component. The remaining components are shown on the drawings issued at the time each scheme was constructed, electronic spreadsheets or on hard copy scanned records.

The Delivery Programme addresses the areas of required improvement for the activities listed in Table 9 for asset management processes, information systems and data management.

Table 9 Asset Management Processes, Systems and Data - Activities

Process System Data

Demand Analysis Asset Registers Asset Classification

Level of Service Financial System Asset identification

Knowledge of Assets Maintenance Management Asset Attributes, Textual Data

Condition Assessment Contract Management Asset Attributes, Spatial Data

Accounting/ Economics Customer Enquiries Historical Condition and Performance Data

Risk Management Work Planning Maintenance Data

Operations Risk Management Future Prediction Data

Maintenance Optimised Renewal Strategy

Life Cycle Costs

Performance Monitoring Forward Works Programme

Water Quality

Optimised Life Cycle Strategy

Integration of Systems

Design, Project Management

Plans and Records

Asset Utilisation GIS

Quality Assurance/ Continuous Improvement

SCADA

Network modelling


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13.1 Quality Management Although an overarching Quality Management Plan has not been developed for the water supply service, a number of prepared and implemented plans and strategies exist that address many of the elements that would be included in such a plan. They are aimed at improving and providing consistent performance of the water supply service, resulting in improved customer and stakeholder satisfaction.

The status of Quality Management for particular water activities is summarised in Table 10.

Table 10 Status of Quality Management

Activity Quality Status Water Activity Management Plan • Prepared in 2007 and to be updated by July 2011.

Asset Management • Monitoring of service levels via customer work request system.

• Obtained from planned and reactive maintenance. • Proactive condition assessment of trunk mains.

Maintenance Management • Strategy and implementation via computerised maintenance management system (MEX).

Operations Management • Manuals document procedures and information.

Pipeline Renewals • Planning based on risk analysis (AssetPlan).

Non Pipeline Renewals • Planning based on risk analysis (Assetic is proposed).

Valuations • Methodology documented and recently updated in July 2010. Assetic is corporate asset register, new additions annually and full revaluation 4 yearly.

Levels of Service • Statements documented and currently under review. • Reflects community desires through public consultation

(service level review). Risk Management • Risk analysis and controls documented and annually

reviewed in accordance with Council’s Risk Management Processes.

• Documented Business Continuity planning for priority risks Knowledge Management System (KMS)

• Documented Water Unit knowledge system, including library, plan register and operations and maintenance manuals.

Policies Development • Draft documented policies currently being reviewed and finalised.

Performance Reporting • Corporate, NWI & Government compliance reporting undertaken and comprehensive data management systems to be developed.

14 Improvement Plan Ongoing monitoring, review and updating of this plan is undertaken to improve the quality of asset management planning and accuracy of the financial projections. This process uses improved knowledge of customer expectations and enhanced asset management processes, systems and data to optimise decision-making, review outputs, develop strategies and extend the planning horizon.

The priority asset related improvement actions over the next 4 years considered to be the most important for delivery of the water supply service and thus included in Council’s Delivery Programme are listed in Table 11.


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Table 11 Future Key Improvement Actions Programme – Water Supply

Ref. No. Delivery Programme Key Actions (Strategies) and Operational Key Actions Responsibility Financial Year

2011/12 2012/13 2013/14 2014/15 1.3.3.5 Improve Water Supply And Wastewater Quality Management Systems Manager, Water

1.3.3.5.1 Review And Enhance Existing Quality Processes And Develop Quality Management Plans Manager, Water

1.3.3.6 Improve Water Supply And Wastewater Environmental Management Systems Manager, Water

1.3.3.6.1 Review and enhance existing Environmental Processes and Develop an Environmental Management Plan Manager, Water

1.3.3.6.2 Development And Implement Energy Management Improvements Manager, Water

1.3.3.7 Update Water Supply And Wastewater Strategic Business Plan Manager, Water

1.3.3.7.1 Update Strategic Business Plans Manager, Water

1.3.3.8 Develop Water Supply And Wastewater Risk Management Action Plans Manager, Water

1.3.3.8.1 Develop And Implement Action Plans For High Risks Asset Engineer

1.3.3.8.2 Refine Business Continuity (Emergency Response) Plans Operations Engineer

1.3.3.8.3 Deliver Improvement Actions Identified In The Business Continuity Plans Operations Engineer

1.3.3.9 Develop And Enhance Water Supply And Wastewater Knowledge And Data Management Systems Manager, Water

1.3.3.9.1 Implementation Of Maintenance Management Asset Engineer

1.3.3.9.2 Develop Critical Spares Register Asset Engineer

1.3.3.9.3 Asset Enhancement, Asset Valuation, Depreciation And Predictive Modelling Asset Engineer

1.3.3.9.4 Plant, Network Control And Telemetry Systems Strategic & Assets Engineer

1.3.3.9.5 Development Of Electronic Plant Log Sheets Treatment Plant Engineer

1.3.3.9.6 Develop Water Quality Data To Meet Reporting Requirements Including Geographical & Sectoral Descriptors Treatment Plant Engineer

1.3.3.10 Develop And Enhance Water Supply And Wastewater Policy And Procedure Manager, Water

1.3.3.10.1 Develop Policy encompassing connections, metering, easements, water carriers, backflow prevention, watermain extensions, rain water tanks, protection of and access to sewer mains, caravan dumping points, private pumping stations, limits of responsibility for sewer connection, wastewater treatment buffer zones, sewer main extensions, drainage diagrams, inspections and rectification and planting near sewers

Operations Engineer


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2011/12 2012/13 2013/14 2014/15 1.3.3.11 Develop And Enhance Water Supply And Wastewater Reporting Systems And Processes Manager, Water

1.3.3.11.1 Implementation Of Customer Request System Asset Engineer

1.3.3.11.2 Implement Bureau Of Meteorology Reporting & WWTP Rain Gauge Upgrade Program Asset Engineer

1.3.3.11.3 Improve Systems And Complete National Water Initiative And NSW Office Of Water Reporting Asset Engineer

1.3.3.12 Review Water Supply And Wastewater Revenue Policy Manager, Water

1.3.3.12.1 Implement Quarterly Billing Cycle And Enhanced Processes Operations Engineer

1.3.3.13 Review Water Supply And Wastewater Strategic Supporting Plans Manager, Water

1.3.3.13.1 5 yearly Review of Development Servicing Plan Strategic & Assets Engineer

1.3.3.13.2 5 yearly Review of Long-Term Financial Plan Manager, Water

1.3.3.13.3 4 yearly Review of Workforce Plan Manager, Water

1.3.3.13.4 4 yearly Review of Levels Of Service Statements, Performance Measures And Targets Manager, Water

1.3.3.14 Review Water Supply And Wastewater Development Policy And Standards Manager, Water

1.3.3.14.1 Review And Update Development Control Plan Including Design Criteria And Standards Strategic & Assets Engineer

2.3.2.1 Deliver Demand Management Strategy Manager, Water

2.3.2.1.1 Implement Demand Management Actions And Priorities Manager, Water

2.3.2.1.2 Implement Performance Tracking Framework For Demand Management Strategy Demand Mgt Plan Leader

2.3.2.1.3 Develop And Promote A Permanent Water Saving Measures Demand Mgt Plan Leader

2.3.2.1.4 Update and Promote Rainwater Tank Policy Demand Mgt Plan Leader

2.3.2.1.5 Collaboratively Work With Top 20 Water Users To Reduce Water Consumption (Non-Residential Program) Demand Mgt Plan Leader

2.3.2.1.6 Audit Council Properties And Undertake Internal Water Conservation Education Program Demand Mgt Plan Leader

2.3.2.1.7 Develop And Adopt Open Space Irrigation Policy And Guidelines And Promote And Implement Education Program Demand Mgt Plan Leader

2.3.2.1.8 Collaboratively Work With Other Major Water Users (Top 100) Demand Mgt Plan Leader

2.3.2.1.9 Advocate To Government To Amend BASIX To Allow Council Minimum 5kl Rainwater Tanks Demand Mgt Plan Leader


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2011/12 2012/13 2013/14 2014/15 2.3.2.1.10 Develop And Implement Residential Retrofits And Rebates Program Demand Mgt Plan Leader

2.3.2.1.11 Review And Update Water Billing Information Demand Mgt Plan Leader

2.3.2.1.12 Identify And Promote Recycled Water Projects Demand Mgt Plan Leader

2.3.2.2 Review And Implement Water Loss Management Plan Manager, Water

2.3.2.2.1 Install Bulk Meters At Major Water Pump Stations Operations Engineer

2.3.2.2.2 Implement Reservoir Drop Testing Program Operations Engineer

2.3.2.2.3 Implement Leakage Reduction Program Demand Mgt Plan Leader

2.3.2.2.4 Identify And Reduce Unaccounted For Water Demand Mgt Plan Leader

2.3.2.3 Implement Augmentation Strategy Manager, Water

2.3.2.3.1 Implement Water Supply Augmentation Strategy Manager, Water

2.3.2.4 Implement Drought Management Strategy Manager, Water

2.3.2.4.1 Conduct Water Quality Study For Clarrie Hall Dam Treatment Plant Engineer

2.3.2.4.2 Amend Water Supply Drought Management Strategy In Accordance With Adoption Of Preferred Water Supply Argumentation Option Manager, Water

2.3.2.4.3 Develop implementation plan for Drought Management Strategy Demand Mgt Plan Leader

2.3.2.4.4 Revise Drought Management Policy Demand Mgt Plan Leader

2.3.2.4.5 Install Additional Destratification Capacity At Clarrie Hall Dam Treatment Plant Engineer

2.3.2.4.6 Consult NSW Office Of Water On Operational Implementation Of Water Sharing Plan Operations Engineer

2.3.2.4.7 Consider potential for pipeline link from SEQ Water Grid for drought contingency supply Manager, Water

2.3.2.4.8 Review Additional Drought Emergency Supply Measures. Manager, Water

2.3.2.5 Finalise And Implement Drinking Water Quality Management Plan Manager, Water

2.3.2.5.1 Determine measures to address elements identified in the Australian Drinking Water Guidelines (ADWG) Gap Analysis Treatment Plant Engineer

2.3.2.5.2 Implement measures to ensure compliance with ADWG Manager, Water


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2011/12 2012/13 2013/14 2014/15 2.3.2.6 Deliver Annual Operations And Maintenance Programs Manager, Water

2.3.2.6.1 Water Fund Management And Administration Manager, Water

2.3.2.6.2 Water Consumer Services Operations Engineer

2.3.2.6.3 Water Mains Operations Engineer

2.3.2.6.4 Reservoirs Operations Engineer

2.3.2.6.5 Water Pumping Stations Mech & Elect Coordinator

2.3.2.6.6 Water Treatment Plants Treatment Plant Engineer

2.3.2.6.7 Dams and Weirs Treatment Plant Engineer

2.3.2.6.8 Tweed Laboratory Centre Laboratory Coordinator

2.3.2.7 Deliver Capital Works Program (Only Large Items Listed) Manager, Water

2.3.2.7.1 Annual Mains Renewal Program Capital Works Engineer

2.3.2.7.2 Annual Consumer Service Renewal Program Capital Works Engineer

2.3.2.7.3 Clarrie Hall Dam Spillway Upgrade Capital Works Engineer

2.3.2.7.4 Tyalgum Water Treatment Plant Upgrade Capital Works Engineer

2.3.2.7.5 Uki Water Treatment Plant Upgrade Capital Works Engineer

2.3.2.7.6 Kennedy Drive East Bypass To Boyd’s Bay Bridge – Trunk Main Upgrade Capital Works Engineer

2.3.2.7.7 Kyogle Road Tree Street North To Cane Drain (St2) Trunk Main Upgrade Capital Works Engineer

2.3.2.7.8 North Arm Road Duplication Trunk Main New Stage 1 Capital Works Engineer

2.3.2.7.9 North Arm Road Duplication Trunk Main New Stage 2 Capital Works Engineer

2.3.2.7.10 Thomson Street Mains Upgrade Capital Works Engineer

2.3.2.7.11 Tumbulgum Road Civic Centre To Old Ferry Road 750mm Trunk Main Upgrade Capital Works Engineer

2.3.2.7.12 Kennedy Drive Bypass Trunk Main Actuated Valve Installation Capital Works Engineer

2.3.2.7.13 Walmsleys Res To Piggabeen Road 375mm Trunk Main New Capital Works Engineer


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2.3.2.7.14 Various Reticulation Main Replacements Capital Works Engineer


2011/12 2012/13 2013/14 2014/15 2.3.2.7.15 Minjungbal Drive Tweed Heads South To Laura Street Main New Capital Works Engineer

2.3.2.7.16 Kennedy Drive Tweed Heads West Main Upgrade Capital Works Engineer

2.3.2.7.17 Wharf Street Tweed Heads Main Upgrade Capital Works Engineer

2.3.2.7.18 Overall Drive Trunk Main Upgrade Capital Works Engineer

2.3.2.7.19 Park Ave Murwillumbah Main Upgrade Capital Works Engineer

2.3.2.7.20 Kings Forest Duplication Trunk Main Upgrade Capital Works Engineer

2.3.2.7.21 Hospital Hill 2 Reservoir Rehabilitation Capital Works Engineer

2.3.2.7.22 Banora Point Reservoir Rehabilitation Capital Works Engineer

2.3.2.7.23 Land Acquisition For McAllister’s Road No4 Reservoir (Development Dependant) Capital Works Engineer

2.3.2.7.24 Land Acquisition For Maher’s Lane Reservoir (Development Dependant) Capital Works Engineer

2.3.2.7.25 Walmsleys Road No 2 Reservoir New Capital Works Engineer

2.3.2.7.26 Water Pump Station 28 Fingal Booster New Capital Works Engineer

2.3.2.7.27 Water Pump Station 1 & 1A Kyogle Road Upgrade Capital Works Engineer

2.3.2.7.28 Water Pump Station 11 Bilambil Village Upgrade (Development Dependant) Capital Works Engineer

2.3.2.7.29 Water Pump Station 33 Lamanda Court New (Development Dependant) Capital Works Engineer

2.3.2.7.30 Water Pump Station 24 Tumbulgum Booster New (Development Dependant) Capital Works Engineer

2.3.2.7.31 Water Pump Station 31 Point Danger New Capital Works Engineer

4.3.1.1 Ongoing Integrated Water Cycle Management Actions - Manager, Water

4.3.1.1.1 Annual update of Integrated Water Cycle Management Strategy Manager, Water

Customer Service 1300 292 872 (02)66702400

[email protected]

Fax(02)6670 2429POBox816MurwillumbahNSW2484

Water Supply Asset Management Plan - Tweed Shire · 2013-10-11 · Water Supply Asset Management...

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