Recycled Water Quality Management Plan - Margaret River Water Recycling

Recycled Water Quality
Management Plan
(RWQMP)
Margaret River
Water Recycling Scheme
Version No: 1
Date: 16/08/2010

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Recycled Water Quality Management Plan
This document has been prepared by Ascent Engineering on behalf of the Shire of Augusta
Margaret River. The information contained in this publication is intended for general use of
personnel involved in the Margaret River Water Recycling Scheme to assist in the implementation
and management of the recycling scheme.
Document History
Issue No
(version)
Original
prepared by
Issued to (description
/section revised)
Date Reviewed
by
Revision
Date
Approved
by
Approval
Date
V1 Ascent
Engineering
Department of Health &
AMRSC
Shire of Augusta
Margaret River
6 Sep 10
This table needs to reflect annual reviews and revisions

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Foreword
Include:
Purpose of the RWQMP
The Margaret River Water Recycling Scheme recycled water quality management plan
(RWQMP) is a stand-alone document to be used by all parties in the day to day operation and
management of the scheme. The purpose of this RWQMP is to document the assessment process
and to provide a record of the day to day operation and management of the scheme.
Scope of the RWQMP
This RWQMP provides an overview of how the 12 elements of the risk management framework of
the Australian Guidelines for Water Recycling Managing Health and Environmental Risk has been
addressed in the Margaret River Water Recycling Scheme.
This management plan is a live document in a process of continual development and review.
Structure of the document
Chapters 1 to 11 of this RWQMP provides the basic information of Margaret River Water
Recycling Scheme and the risk management requirements. Additional information is provided in
the Appendices.

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Contents
Foreword................................................................................................................................................ 2
Contents.................................................................................................................................................. 3
1. Introduction.............................................................................................................................. 8
1.1 Site description ........................................................................................................................... 8
1.2 Existing environment.................................................................................................................. 9
1.3 Scheme overview........................................................................................................................ 9
2. Recycled Water Quality Policy ...................................................................................................... 12
2.1 Policy document........................................................................................................................ 12
2.2 Regulatory and formal requirements ........................................................................................ 12
2.3 Stakeholder engagement ........................................................................................................... 12
3. Roles and Responsibilities .............................................................................................................. 13
3.1. Supplier.................................................................................................................................... 13
3.2 Scheme manager ....................................................................................................................... 13
3.3 Users ......................................................................................................................................... 13
3.4 Duty of care holder ................................................................................................................... 13
3.5 List of contact details................................................................................................................ 13
4. Assessment of the Recycled Water Scheme .................................................................................. 15
4.1 Source water (influent) ............................................................................................................. 15
4.2 Water quality objectives ........................................................................................................... 15
4.3 Health risk assessment.............................................................................................................. 16
4.4 Recycled water storage ............................................................................................................. 17
4.4. Reticulation network (distribution system) and application (receiving environment(s) ......... 17
4.5 Systems operation..................................................................................................................... 18
4.6 Prevention of cross connection with potable supplies.............................................................. 18
5. Treatment Train.............................................................................................................................. 19
5.1 Treatment description ............................................................................................................... 19
5.2 The HACCP.............................................................................................................................. 19
5.3 Operational monitoring and maintenance................................................................................. 19

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5.4 System operators competency................................................................................................... 21
5.5 Alarms, critical control points and critical limits ..................................................................... 21
5.6 Water supply arrangements ...................................................................................................... 22
6. Monitoring Plan............................................................................................................................... 23
6.1 Validation monitoring............................................................................................................... 23
6.2 Operational monitoring............................................................................................................. 23
6.1 Verification monitoring ............................................................................................................ 24
7. Employee Training & Public Education....................................................................................... 25
7.1 Employee awareness and involvement ..................................................................................... 25
7.2 Employee training..................................................................................................................... 25
7.3 Training records........................................................................................................................ 25
7.4 Occupational health and safety procedures .............................................................................. 25
7.5 Public safety.............................................................................................................................. 25
8 Incident and Emergency Response................................................................................................. 27
9 Community Involvement and Consultation................................................................................... 28
9.1 Community consultation........................................................................................................... 28
10 Documentation and Reporting...................................................................................................... 29
10.1 Management of documentation and records........................................................................... 29
10.2 Reporting ................................................................................................................................ 29
10.2.1 Internal .......................................................................................................................... 29
10.2.2 External ......................................................................................................................... 29
10.3 Annual report.......................................................................................................................... 29
11 Evaluation and Audit..................................................................................................................... 30
References ............................................................................................................................................ 31
Glossary................................................................................................................................................ 32
Appendices ........................................................................................................................................... 35
Appendix A: Scheme Location........................................................................................................... 36
Appendix B: Drawing of the Recycled Water Scheme from Source to End-use(s) ...................... 44

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Appendix C: Water Balance& Cost Benefit Analysis Report......................................................... 46
Appendix D: Treatment Plant Process Flow Diagram .................................................................... 47
Appendix E: Health Risk Assessment ............................................................................................... 48
Appendix F: Validation and Verification Report ............................................................................ 49
1. Introduction................................................................................................................................. 49
2. Sampling methodology ............................................................................................................... 49
3. Results......................................................................................................................................... 50
4. Operational/online data............................................................................................................... 50
5. Influent flow ............................................................................................................................... 51
6. Discussion................................................................................................................................... 51
8. Copy of original results............................................................................................................... 51
Appendix G: OHS Procedures and Material Safety Data Sheets................................................... 52
Appendix H: Sampling Plan............................................................................................................... 53
Appendix I: Warning Signs................................................................................................................ 54
Appendix J: Training/ Education ...................................................................................................... 55
Refer to Operations & Maintenance Manual training information. Appendix K: Annual Report... 55
Appendix K: Annual Report .............................................................................................................. 56
1. Introduction................................................................................................................................. 57
2. Quality of recycled water............................................................................................................ 57
2.1 Recycled water quality sampling ....................................................................................... 57
2.2 Analysis of results.............................................................................................................. 58
3. Emergency and Incident Management........................................................................................ 58
4. Complaints.................................................................................................................................. 59
5. Audit ........................................................................................................................................... 59
Appendix P: Recycled Water Supply Agreement ............................................................................ 61
Appendix Q: Hazard Analysis and Critical Control Points............................................................ 62
Appendix R: Operational and Maintenance Manual of the WWTP ............................................. 63

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Appendix S: Shire Operations and Maintenance Manual .............................................................. 64
Appendix T: System information for Forrest Rd Shire Filters and UV System........................... 65
Appendix U: Land Capability Assessment ....................................................................................... 66
Appendix V: Irrigation Volumes Margaret River Turf Site........................................................... 67

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Tables
Table 1. Margaret River Rainfall ....................................................................................................................9
Table 2. Summary of the Margaret River Water Recycling scheme (whole scheme) .................................11
Table 3 Water quality objectives of the recycled water as agreed by Water Corporation............................15
Table 4 Typical Average Water Quality as Measured by Water Corporation..............................................16
Table 5. Estimated Annual Recycled Use.....................................................................................................22
Figures
Figure 1. Riverslea Subdivision, Margaret River...........................................................................................8
Figure 2. Water Corporation's Storage Dam .................................................................................................10

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1. Introduction
The Shire of Augusta-Margaret River local government authority has to constructed a recycled
water system to enable treated waste water from the Water Corporation’s Margaret River Waste
Water Treatment Plant to be used for irrigating public open space including parks, high school and
primary school ovals, central sporting facilities and golf course. The project will reduce extraction
of water from the Margaret River by approximately 169 megalitres per annum, contributing to
increased environmental flows and improved water quality. It will provide a sustainable water
source for recreation areas in the Margaret River town site as it grows in line with population
increases.
It is intended to extend the system to the Riverslea subdivision to irrigate its public open spaces
and to provide a construction water supply source at the Forrest Road (nearTingle Ave) tank site.
1.1 Site description
The location is the Riverslea subdivision, Margaret River (see Appendix A).
Figure 1. Riverslea Subdivision, Margaret River
1
7
2
4
3
5
6

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1.2 Existing environment
Climate - Margaret River has a Mediterranean-style climate with hot dry summers and wet
moderately cold winters. Rainfall is as shown in the table below.
Table 1. Margaret River Rainfall
Source: http://www.mronline.com.au/weather/weatherview.htm (16/08/2010)
Land use vegetation – Margaret River is a townsite, surrounded by national park to the
north and rural agricultural land to the south, east and west.
Topography and flooding – Margaret River town has an elevation of about 100m AHD. It
is located in a moderately hilly area. Which plateaus on the south side of the town roughly
aligning the edge of the plateau along Wallcliffe Road and Forrest Road.
The receival tank of the recycled water at Forrest Road, which will service Riverslea is at
the top of the subdivision, which slopes generally down to the east.
Proximity to water sources and water table – The Margaret River borders the northern side
of town. Darch Brook is a tributary to the Margaret River, running south to north on the
eastern side of the town. Most of town drains into the Margaret River.
The water table is generally below 2m, though in some locations the water table is perched
on a high clay level, which can lead to high water tables.
Sensitive receiving environments – The Margaret River and the Darch Brook are
considered sensitive receiving environments.
Refer to Appendix C – “Water Balance & Cost Benefit Analysis Report”
1.3 Scheme overview
Source water – This is the Margaret River Wastewater Treatment Facility, owned and
operated by the Water Corporation.
Location of the treatment apparatus – about 2km north of Margaret River Town. Refer to
Appendix B.

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Location and capacity of storage apparatus/ponds – The Water Corporation’s storage dam
is about 350ML.
Figure 2. Water Corporation's Storage Dam
The storage capacity of the receiving tank at Riverslea is 200kL.
Treatment apparatus – The Water Corporation has tertiary treatment of the sewerage it
receives, including screening, oxygenation, settling, filtering and chlorination.
Existing infrastructure – All the infrastructure is in place, except for the final disinfection
system at the Forrest Road tank. Connection of the existing reticulation in the various
parks in Riverslea has not been carried out, pending system approval.
Refer to Appendix B for system schematic.

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Table 2. Summary of the Margaret River Water Recycling scheme (whole scheme)
Scheme Characteristic Description
Location Margaret River
Source of recycled water Margaret River Wastewater Treatment Facility
Volumes of recycled water to be produced 181ML for parks, 19ML for Standpipes
Proposed end uses of the recycled water Irrigation of MR public open space and Primary
School and High School MR Golf Club
(approved) and now Riverslea Subdivision and
Construction Standpipes
Percentage of recycled water used in each one of
the proposed end uses
It is intended that all of the irrigation water in
each location be 100% recycled water.
Type of treatment system SBR Sequence Bach Reactor, storage dam,
coarse sand filtration at MR wastewater
treatment facility. Further filtration and UV
disinfection for Riverslea and standpipes.
Location of the WWTP 2km north of Margaret River
Expected flow per day Minimum 0 kL
Average 548kL
Maximum 1,800kL
Estimated number of people that will benefit/use
the recycled water scheme
About 6,000
Irrigation area (m2
) 72.5ha
Risk exposure level Moderate

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2. Recycled Water Quality Policy
2.1 Policy document
The Shire formally endorsed the Water Recycling scheme at its ordinary meeting of Council on 12
March 2008.
2.2 Regulatory and formal requirements
1. Department of Water - Supplier’s Licence Exemption
2. Department of Health – O&MP, Water Sampling Plan, Emergency Response Plan
3. Water Corporation
a. Agreement
b. Design
4. Department of Environment and Conservation
a. Approval to Use Land
b. Bed & Bank Disturbance
c. Native Vegetation Clearing Permit
d. Works Approval
e. Disposal Licence
5. Aboriginal Heritage – S18 approval
All of the above approvals have been processed except for the Department of Health approval
relating to Riverslea and Rapids Landing subdivisions. Department of Health approval has been
granted for the scheme (Approval No. EHB-00956) except for Riverslea and Rapids Landing.
This management plan will be submitted to WA Health for review, as part of the conditions of
approval for the Margaret River Water recycling scheme.
2.3 Stakeholder engagement
Stakeholders include –
Riverslea Residents – adjacent to the recycled water. Require information and education about
safe water application.
Water Corporation – recycled water supplier, must supply agreed amount and to agreed water
quality.
Shire of Augusta Margaret River – scheme owner, manager and operator.

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3. Roles and Responsibilities
3.1. Supplier
The supplier is the Water Corporation with tertiary treatment of the wastewater.
Refer to Appendix P: Recycled Water Supply Agreement Water Corporation and the Shire of
Augusta Margaret River.
3.2 Scheme manager
The scheme manager is the Shire of Augusta Margaret River. The shire has undertaken the design,
approvals, construction ownership operation and maintenance of the system.
3.3 Users
The users are the residents of Riverslea and the Lester Group construction contractor and the Shire
of Augusta Margaret River construction operators.
Refer to the communications plan for education of the residents. Further notification to the
residents will be undertaken once all approvals are in place
3.4 Duty of care holder
Provide the contact details for the personnel whom have the duty of care to provide safe recycled
water for the intended purposes.
The Duty of Care Holder for the Recycled Water Scheme is:
Shire of Augusta Margaret River
Townview Terrace Margaret River WA 6285
The contact person for the Margaret River Recycled Water Scheme is
Name of person: _Wayne Gailey__________________________
Position: _Manager Works________________________
Phone number on (08): _9780 5641__________________________
3.5 List of contact details
Name Position Phone
Shane Bacskai Parks and Gardens
Supervisor
9780 5640
Allan Miller (Water
Corporation)
Supervising Wastewater
Operator
0429 910 648

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Refer to Appendix S: Shire Operations and Maintenance Plan

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4. Assessment of the Recycled Water Scheme
4.1 Source water (influent)
Water source – Water Corporation wastewater treatment facility. The typical sewerage values of
8000 rotavirus, 2000 Cryptosporidium, and 7000 Campylobacter per litre were used (National
Guidelines Nov 06, Section 3.5.2) for this project and are based on the 95th percentiles used for
determining health-targets.
4.2 Water quality objectives
Chemicals are not generally considered to be a human health risk where wastewater is derived
predominantly from domestic catchments, and recycled water is used for non-drinking purposes.
Industrial recycling schemes or other schemes in which chemical inputs from the catchments are
considered to be significant, require the identification of specific chemical water quality objectives
through risk assessment.
Recycled water quality after the treatment by the Water Corporation is as follows.
Table 3 Water quality objectives of the recycled water as agreed by Water Corporation

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Table 4 Typical Average Water Quality as Measured by Water Corporation
Parameter Units Value
E Coli cfu/100 mL 870
Thermotolerant
Coliforms
cfu/100 mL 226
BOD mg/L 5.1
SS mg/L 14.7
TN mg/L 4.0
TP mg/L 0.4
Conductivity mS/cm 98
Further treatment will be carried out at the Forrest Road water tank to improve the water quality to -
< 10 E.coli org/100 mL
Turbidity < 2 NTU
< 20 mg/L BOD
<30 mg/L SS
pH 6 – 9
4.3 Health risk assessment
Health risk assessment is used to identify the most serious threats of recycled water based on
likelihood of occurrence and severity of consequences. Health risk assessment evaluates the
hazards and events that can compromise recycled water quality and safety.
Microbial quality
The typical sewerage values of 8000 rotavirus, 2000 Cryptosporidium, and 7000 Campylobacter
per litre were used (National Guidelines Nov 06, Section 3.5.2) for this project and are based on
the 95th percentiles used for determining health-targets.
Microbial hazards for human health include enteric viruses, protozoa and bacteria. The total log
reduction required for the Riverslea scheme is 5 log reduction of viruses, 3.5 log reduction of
protozoa and 4 log reduction of bacteria (see National Guidelines Nov 06, Tables 3.7 and 3.8).
This allows an unrestricted recycled watering regime for the recycled water.
An inbuilt safety margin will be applied with watering carried out at night and the use of
withholding periods.
For the Construction Stand-pipe the following applies –

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The total log reduction required for the proposed Construction Stand pipe 5.5 log reduction of
viruses, 4 log reduction of protozoa and 5 log reduction of bacteria. Calculations for the exposure
and required log reductions have been made as per the National Guidelines Nov 06, Appendix 2.
Theses calculations are attached as Appendix V: Risk Assessment
Chemical quality
Exposure of chemicals in recycled water is too low to represent a health risk.
Summary of Preventive measures
In the first instance the Water Corporation's treatment, storage and disinfection of the water
provides 3 log removal of viruses and protozoa and 4 log removal of bacteria.
For the Riverslea Parks and for the construction water tank stand further filtration and disinfection
of the water will occur to further prevent the potential for public exposure to enteric protozoa,
viruses and bacteria. Night time irrigation and withholding periods will also be used for the
parks. Management protocols will be put in place for the use of the recycled water for the
construction stand pipe.
In total the combined Treatment and On-site based Preventative Measures will provide adequate
log removals.
Detailed HRA is presented in Appendix E: Health Risk Assessment.
4.4 Recycled water storage
Details and capacity of storage tank – 200kL steel tank with full cover and locking manhole
lid.
Security (accessibility to public) – the tank is fully fenced with recycled water signage around
the perimeter
Turnover time – within 1 day, with up to 2 days on non-irrigation days.
Properly sealed? (accessibility to animals/insects) – the tank is fully enclosed
Maintenance – an inspection and maintenance regime has been put in place for the tank and
surrounds as per the Operations and Maintenance Plan, Appendix S.
Structure soundness (Australian Standards compliance) – yes.
Refer to Appendix B: Drawings of the Recycled Water Scheme from Source to End-uses;
Appendix D: Treatment Plant Process Flow Diagram, and Appendix S: Operations and
Maintenance Plan
4.4. Reticulation network (distribution system) and application (receiving
environment(s)
Refer to Appendix A: Scheme Location; Appendix B: Drawing of the Recycled Water Scheme
from Source to End-uses(s); Appendix D: Treatment Plant Process Flow Diagram

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4.5 Systems operation
A trunk main pipe delivers water from the MR wastewater treatment facility under pump pressure
(about 700 kPa) from Water Corporation pumpset. The water is delivered to the tank at Forrest
Road, where it undergoes further filtering and disinfection. From the tank the water is pumped
into the existing reticulation system in the Riverslea parks. It is also pumped to the adjacent stand
pipe for delivery on demand. The system is pressure driven with variable speed pumps to cater for
differing water demands.
4.6 Prevention of cross connection with potable supplies
Minimizing the risk of cross contamination is done by:
1. avoiding the potable water service corridor allocation in road reserves;
2. use of purple trunk pipe mains;
3. purple coloured valve boxes;
4. recycled water signage on the system and through the parks;
5. no connections designed, and therefore no need for backflow protection, to scheme water.
Refer to Appendix E: Health Risk Assessment, Appendix Q: Hazard Analysis and Critical Control
Points and Appendix S: Operations and Maintenance Manual

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5. Treatment Train
5.1 Treatment description
Water will be received from the Water Corporation to agreed standard as already approved
by the Department of Health.
Water in the Forrest Road tank will be filtered using disposable filters down to 10 micron
on the supply side of the tank.
Water will then be filtered and then disinfected by UV light using an automated system
with continual monitoring.
A testing regime will be put in place on commencement for three months to monitor the
efficacy of the system to remove contaminants from source water.
Manual testing and direct manual chlorination dosing will occur in the event of treatment
system failure. This system is approved for the other sites and has proven effective.
Refer to Appendix D: Treatment Plant Process Flow Diagrams; Appendix S: Operations and
Maintenance Manual
5.2 The HACCP
A preventive risk management system such as Hazard Analysis and Critical Control Point (HACCP) has
been used for assessing risks and managing risk. The purpose of the HACCP is to identify all hazards in
the treatment process that could cause the final product to be out of specification, such that it could cause
illness or injury.
The construction stand pipe hazard assessment is based on the information provided by Workplace Health
and Safety Queensland, July 2007 at the site
http://www.deir.qld.gov.au/workplace/resources/pdfs/model_watermgt.pdf
Refer to Appendix E: Health Risk Assessment; Appendix Q: Hazard Analysis and Critical Control
Points
5.3 Operational monitoring and maintenance
Details on the operational monitoring and maintenance of all the major apparatus within the
recycled water system are as follows:
Water Corporation has full operational, monitoring and maintenance plans for their system;
Operations, monitoring and maintenance manual and checklists in place for Shire system;

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UV disinfection and monitoring apparatus for Forrest Rd tank system to be supplied with
operating instructions and procedures to be developed based on operating and maintenance
requirements;
Management and operational structure has been detailed in the Manual, Shane Bakskai is in
charge of the system; and
Operational monitoring and maintenance frequencies.
1. Storage Tank
a. Carry out fortnightly inspection to –
i. Check that the tank and connections are not leaking
ii. Check that valves are operating correctly and are not leaking
iii. Ensure that all signage is displayed correctly
iv. Ensure that fencing, tank covers, manhole hatches are in good working
order
v. Ensure all locks are working
vi. Check that the float switch is working and free of debris
b. Carry out monthly inspection on –
i. The SCADA overflow alarm
ii. The SCADA components
c. Carry out an annual inspection on –
i. The tank interior during scheduled maintenance.
d. Non-scheduled Maintenance to be fixed immediately –
i. Fix tank and/or connections
ii. Fix valves
iii. Display, clean, repair, signage
iv. Fix fencing, tanks covers, manhole hatches
v. Replace broken locks
vi. Fix or replace float switch and clear of debris
vii. Fix SCADA as required
e. Scheduled Maintenance –
i. At the end of the irrigation season partially fill with non-recycled water
(enough to cycle through each station for sprinkler maintenance) and then
clean the inside as required. Do not empty the tank below a depth of
600mm, as this amount of water is needed to keep the tank structure
stable.
ii. Lubricate locks annually prior to autumn rains
2. Reticulation System
a. Carry out fortnightly inspections using non-recycled water to check that –
i. the sprinklers are working, are acting uniformly, to the correct length and
appropriate direction
ii. there are no leaks at the pump station
iii. the Pump Station Shed is secure and the lock is in good order
iv. the pump is in good working order
v. the automation system is working when in the manual mode
vi. that no sodden areas of lawn or garden develop
b. Carry out annual inspections on the electrical system by a qualified electrician

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c. Non-scheduled Maintenance to be fixed immediately –
i. Raise, clean and re-direct sprinklers
ii. Repair pipes
iii. Fix leaks at the Pump station
iv. Fix the pump
v. Fix the automatic system faults
vi. Fix electrical faults
vii. Map sodden area and schedule for repair immediately.
d. Scheduled Maintenance –
i. Service the pump at the manufacturer’s recommended service interval.
Refer to maintenance manuals in the Appendix B.
ii. Service the automation system at the manufacturer’s recommended
service interval.
iii. Service the reticulation sprinklers. At the same time as the annual end of
season service of the storage tank, using clean water service the
sprinklers.
iv. Repair sodden areas – hollow tyne cored and sand to remove thatch and
allow water penetration into soil profile, or dud out and replaced with clean
sand and fresh turf.
Refer to Appendix Q: Hazard Analysis and Critical Control Points
5.4 System operators competency
Staff operating the system are the Parks and Gardens staff at the Shire of Augusta, who are
competent reticulation systems operators.
Staff have undergone specific formal sampling and occupational health & safety training for the
use of the recycled water system and have operated the system for one season.
Further training will be provided on the specific filtration and disinfection equipment used at the
Forrest Road tank site when the instructions are provided.
Construction staff are to be fully trained for use of the stand pipe, the water tanker and the spraying
operations.
5.5 Alarms, critical control points and critical limits
Identified critical control points (CCPs) are at:
Treatment - Filtration
Disinfection - Water Corporation chlorination and Shire filter and UV system
Irrigation
Standpipe
Tankering
Construction spraying
Critical limits and corrective actions are identified in the Operations and Maintenance Manual

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The operation of shutdown systems will be fully tested at commissioning and the outcome of these
tests recorded.
Real-time monitoring will be linked to Treatment (Water Corporation), Disinfection (Water
Corporation) and the filter and UV system (Shire).
Refer to Appendix Q: Hazard Analysis and Critical Control Points and Appendix S: Operations
and Maintenance Manual
5.6 Water supply arrangements
The Water Corporation supplies water to the Shire of Augusta Margaret River for this scheme.
Refer to the table below for details of water to be supplied.
Table 5. Estimated Annual Recycled Use
Refer to agreement in Appendix P: Recycled Water Supply Agreement

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6. Monitoring Plan
Monitoring will be undertaken as a two phase approach based following:
6.1 Validation monitoring
Validation is a critical component of treatment process management because it ensures that the
required water quality objectives will be achieved.
From the Draft Guidelines for the Use of Recycled Water in WA Table 6.1 the following
Validation and Verification monitoring is to be undertaken.
Validation monitoring will be undertaken during commissioning of the treatment plant in
accordance with the Guidelines for the Use of Recycled Water in WA (2010). Before the scheme
is approved, a validation and verification report of the treatment system needs to be reviewed by
WA Health.
Refer to Appendix F: Validation and Verification Report.
6.2 Operational monitoring
Operational monitoring refers to the parameters monitored at each CCP to demonstrate the
treatment plant is operating correctly. Each operational parameter has critical limits and alert limits
that are established during the validation monitoring. Corrective actions that need to be taken if a
critical limit is breached need to be included.
The procedures for operational monitoring should include:
What is being monitored
How the monitoring is done
When the monitoring is done
Where the monitoring is done

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Who is responsible for ensuring it is completed
The critical limits, alert levels an corrective actions
Operational Monitoring is to be undertaken.
Detail information is included in Appendix Q: Hazard Analysis and Critical Control Points
6.1 Verification monitoring
Verification monitoring assesses the overall performance of the system and compliance with the
overall water quality objectives. It is independent of the routine operational monitoring of the
system and it is used to confirm product water quality objectives.
Testing need to be conducted by a laboratory that is National Association of Testing Authorities
(NATA) accredited laboratory.
Refer to section 6.1 above for the verification monitoring.
For details refer to Appendix F: Validation and Verification Report and Appendix H: Sampling
Plan.

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7. Employee Training & Public Education
7.1 Employee awareness and involvement
Employees including plant operators and contractors have a sound knowledge base from which to
make effective operational decisions. They are trained in the methods and skills required to
perform their tasks efficiently and competently. Employees need to be aware of the potential
consequences of system failures, and of how their decisions can affect the safety of the scheme.
7.2 Employee training
Shire Parks and Gardens Maintenance staff are all trained for basic operation of reticulation
irrigation. Specific induction training for the handover of the recycled water system occurred with
training on the Operations and Maintenance Manual.
Sampling training was provided by the Shire’s Health Manager on the correct procedure for
sampling for key Maintenance staff.
A select staff member has been sent to a Water Corporation accredited sampling course.
When the Riverslea system and standpipe system approvals are in place specific systems training
will be undertaken for these items for all staff, with a requirements for signoff as per the
Operations and Maintenance Manual.
7.3 Training records
Training records are kept in the Operations and Maintenance Manual and all involved staff are
trained and required to sign off on the training before using recycled water.
Refer to Appendix J: Training and Education
7.4 Occupational health and safety procedures
Occupational health and safety procedures are documented in the Operations and Maintenance Manual.
Refer to Appendix G: OHS Procedures
7.5 Public safety
Provide copies of the information to be given to recycled water users to promote awareness of
recycled water quality issues, allowable uses, responsibilities and the impacts of unauthorised uses.
Meetings have been held with sporting groups and the Department of Health information provided
for the users of the sporting fields.

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Signage is in place and will be extended to Riverslea parks, to the standpipe and to the water
tanker and the construction site where recycled water is used.
A letter will be sent to residents near the Riverslea parks with educational material, safety
information, what to do in case of a mishap information and contact information.

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8 Incident and Emergency Response
The recycling scheme should include all possible incidences that will affect the water quality or
any aspect of the recycled scheme.
The incident and Emergency Responses are documented in the Operations and Maintenance Plan,
including communications and response protocols.

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9 Community Involvement and Consultation
9.1 Community consultation
Community consultation plan is provided in the Hazard Analysis of Critical Control Points and
Communications Plan.

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10 Documentation and Reporting
10.1 Management of documentation and records
The Shire has records keeping processes for all documentation it receives. This includes
information from the public, incident management, and the keeping of sampling and monitoring
information, reporting of information, training and compliance records.
The Operations and Maintenance Manual is the live document which is updated as required. This
document updates contacts, provides operating protocols, maintenance protocols, emergency
response protocols. It is the vehicle where continual improvement activities are documented.
Records for training, safe operating procedures and job safety analysis is recorded in this
document.
10.2 Reporting
10.2.1 Internal
10.2.1.1 Incident report
All employees and contractors should record the initial incident information including:
Date, time, location and nature of the incident.
Persons injured, equipment damaged or environment impacted.
Nature of injury or damage and estimate of severity.
Immediate corrective action being taken.
Assistance required.
Activity in progress at the time.
10.2.2 External
10.3 Annual report
The scheme needs to submit the annual report by 30 September each year to WA Health. The
report corresponds to the immediately preceding financial year and contains the detailed
information in Appendix K: Annual Report.

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11 Evaluation and Audit
Continual Improvement is a responsibility of the system manager and the activities required to be
undertaken and frequency are provided in the Operations and Maintenance Manual. Audit
activities are also included and results shall be made available to WA Health on request.

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References
WA Health (2010) Guidelines for the use of Recycled Water in Western Australia.
NRMMC, EPHC and AHMC (Natural Resource Management Ministerial Council, Environment
Protection and Heritage Council and Australian Health Ministers’ Conference) (2006) Australian
Guidelines for Water Recycling: Managing Health and Environmental Risks (Phase 1) Canberra.
enHealth Council (2004) Environmental Health Risk Assessment: Guidelines forassessing human
health risk from environmental hazards, Department of Health and Ageing and enHealth Council,
Canberra
Australian and New Zealand Standard AS/NZS 3500:2003, Plumbing and Drainage
Australian and New Zealand Standard AS/NZS ISO 31000:2009 Risk Management – Principles
and Guidelines
WA Health (2006) Mosquitoes and Cyclones; Managing the Risk of Mosquito‐ Borne Disease
Guidelines 2006
Queensland Government, Natural Resources and Water (2008) Recycled water management plan
and validation guidelines.

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Glossary

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Term/Abbreviation Definition/Description
Activated Sludge An activated mass of micro-organisms capable of stabilising waste aerobically – a
“biomass”.
AGWR (2006) Australian Guidelines for Water Recycling: Managing Health and Environmental Risk
(Phase 1)
Alert limit Is the early warning that process is becoming unstable. May indicate the possibility of
exceeding a regulatory requirement or a critical limit for a CCP
AS/NZS Australian Standards/New Zealand Standards
BOD Biological oxygen demand
CCP Critical control point. CCPs are activities, procedures or processes where a control can
be applied and that is essential for preventing, eliminating or managing a hazard to an
acceptable level.
cfu Coliform forming units
COD Chemical oxygen demand
Commissioning
verification
A validation monitoring conducted to prove that the expected water quality is being
constantly produced by the commissioned treatment plant
Critical limit A prescribed tolerance that must be met to ensure that a critical control point effectively
controls a potential health hazard; a criterion that separated acceptability from
unacceptability.
Ct The production of disinfectant concentration (C in mg/L) and contact time (t in minutes),
used in disinfection
DO Dissolved oxygen
E Coli Escherichia coli. The most common thermotolerant coliform present in faeces and used
as indicator of faecal contamination
Exceedance Water quality that goes outside identified limits. This limits may include alert levels,
critical limits or water quality objectives
g gram
GL gigalitre
HACCP Hazard analysis and critical control points
Hazard A biological, chemical, physical or radiological agent that has the potential to cause
harm
Hazardous event An incident or situation that can lead to the presence of a hazard, or often directly
contains a hazard
kL Kilolitre
L Litre
Log reduction Used in reference to the physical-chemical treatment of water to remove, kill or
inactivate microorganisms such as bacteria, protozoa and viruses (1-log removal = 90%
reduction in density of the target organism, 2-log removal = 99% reduction, 3-log
removal = 99.9% reduction, etc).
MBR Membrane bioreactor
mg/L Milligrams per litre
ML Megalitre
MoU Memorandum of understanding
NATA National Association of Testing Authorities
NTU Nephelometric turbidity unit
Operational The routine monitoring of control parameters that confirm the treatment process are

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monitoring under control and operating within the operating criteria
PCT Process control table
PLC Programmable logic controller
Point of supply The physical point of transfer to the user
PPE Personal protective equipment
Public open space Any open space, such as parks, sporting fields, racecourses, school ovals, municipal
parks and gardens, golf courses, footpaths, car parks, road verges, where either members
of the public, staff or employees may be exposed to recycled water. It does not include
gardens in domestic residences nor agricultural farmland
QA/QC Quality assurance/quality control
Recycled water
provider
An entity that owns infrastructure for the production and supply of recycled water
Residual risk The risk remaining after consideration of existing preventive measures
Risk The likelihood of a hazard causing harm in exposed populations in a specified time
frame, including the magnitude of that harm.
RWQMP Recycled water quality management plan
SBR Sequential batch reactor
SCADA Supervisory control and data acquisition
Scheme Refers to a recycled water scheme
Sewage Household and commercial wastewater that contains or may contain faecal, urinary or
any other human waste
Sewerage A sewer, access chamber, vent, engine, pump, structure, machinery, outfall or other
work used to receive, store, transport or treat sewage
Sludge The constituents removed from wastewater treatment plants include screenings, grit,
scum and sludge. Sludge is usually in the form of a liquid or semisolid liquid that
typically contains from 0.25 to 12% solids by weight.
SS Suspended solids
Target limit Refers to the normal operational value(or value range) for a process which indicates that
the process is stable
TN Total nitrogen
TP Total phosphorous
Treatment Validation A documented program about how the plant or equipment used for the treatment of
recycled water are to be tested to demonstrate the quality f the recycled water
consistency meets the water quality objectives for the intended end use. Treatment
validation includes the operational criteria to ensure capability to effectively control
hazards
TSS Total suspended solids
UV Ultraviolet
Violation limit Critical limit is the operational value or performance criteria (that has been violated)
which separates acceptable from unacceptable in terms of hazard control and recycled
water safety. Corrective actions need to be implemented immediately to regain process
control
WWTP wastewater treatment plant

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Appendices
Appendix A: Scheme Location
Appendix B: Drawing of the Recycled Water Scheme from Source to End-use(s)
Appendix C: Water Balance
Appendix D: Treatment Plant Process Flow Diagram
Appendix E: Health Risk Assessment
Appendix F: Validation and Verification Report
Appendix G: OHS Procedures and Material Safety Data Sheets
Appendix H: Sampling Program
Appendix I: Warning Signs
Appendix J: Training and Education
Appendix K: Annual Report
Appendices L to O not listed
Appendix P: Recycled Water Supply Agreement
Appendix Q: Hazard Analysis and Critical Control Points
Appendix R: Operational and Maintenance Manual of the WWTP
Appendix S: Operations and Maintenance Manual of the Shire
Appendix T: System Information for Forrest Rd Shire Filters and UV System
Appendix U: Land Capability Assessment
Appendix V: Risk Assessment
Appendix W: Nutrient Irrigation Management Plan

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Appendix A: Scheme Location
RIVERSLEA
RAPIDS LANDING
GLOUCESTER
HIGH SCHOOL
PRIM. SCHOOL
PARK
REUTHER PARK
GOLF CLUB
TREATMENT PLANT
WASTE WATER
0 1000m 2000m
MARGARET RIVER WATER RECYCLING PROJECT
Location map – Riverslea on left middle

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Site Map - Riverslea
1
7
2
4
3
5
6

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Park 1 Aerial – Cnr. Shilton Place & Forrest Road
Forrest Rd Tank, Pump, Controller Panel, Fencing
Fence
Water Tank
Standpipe
Sign
Boundary
LEGEND

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Park 2 Aerial – The Greenway

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Parks 3 & 4 Aerial – The Avenue & Butterfly Park

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Park 5 – (Horseshoe Park)

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Park 6 – Yellow Gum Wk

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Park 7 – Farmhouse Place

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Appendix B: Drawing of the Recycled Water
Scheme from Source to End-use(s)

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Standpipe
Future
Parks &
Tank
Approved
Approved
Riverslea
Approved

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Appendix C: Water Balance& Cost Benefit
Analysis Report

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Appendix D: Treatment Plant Process Flow
Diagram

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Appendix E: Health Risk Assessment

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Appendix F: Validation and Verification Report
1. Introduction
This report documents the testing of the microbiological removal and the effluent water quality of
the Margaret River Water Recycling scheme.
The treatment plant comprises the following processes:
List
Water Corporation
i. Primary,
ii. Secondary
iii. Storage
iv. Filtration &
v. Chlorination
Shire – Forrest Road
i. Bag Filtration
ii. UV Disinfection
2. Sampling methodology
Validation and Verification monitoring is to be undertaken.
The sampling location(s)
Water Corporation –
1. Final Effluent
2. Storage Dam Outflow
3. Post Chlorination
Shire

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1. Post UV Filtration 2 samples / week for ecoli
Quality assurance/Quality control (QA/QC)
1. As per Operations and Maintenance Manual for monitoring, reporting
and audit.
3. Results
To be included when system is commissioned.
A summary of test results for the commissioning verification
A summary of any water quality exceedences (if they occur), the circumstances that led to
them occurring and any corrective/preventive actions taken or put in place
A statistical analysis of the data collected to determine the confidence level for meeting the
water quality objectives on a continuous basis.
Table 1 Summary of test results
Date Report
No
Lab Parameter Units Effluent
Compliance value
Sampling
Point
Result Comments
4. Operational/online data
Table 2 Summary of operational data results
Date Parameter Units Sampling
Point
Result (Daily average)
Water Corporation has continuous monitoring of chlorine dosing and flow.
Shire will has contiunual monitoring of flow and UV intensity and hours.

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5. Influent flow
Influent is guaranteed water quality as per Water Corporation Agreement to <1000 Ecoli /100ml.
6. Discussion
The Deparment of Envioronment has waived the requirement for a wastewater disposal works
approval and licence. They have assessed the application for the Riverslea subdivision and the
disposal regime and deemed that a licence is not required.
Turbidity - UV intensity monitoring will supersede turbidity monitoring for UV system.
Provided adequate intensity is achieved and the maximum flow rate is not exceeded, the
required log reductions will be achieved. UV intensity supercedes turbidity monitoring for UV
system.
7. Conclusions
The quality of water achievable through the Water Corporation’s treatment process as well as the
Shire’s upgrade of water quality will
8. Copy of original results
To be included once monitoring commences.

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Appendix G: OHS Procedures and Material
Safety Data Sheets
As per Operations and Maintenance Manual.

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Appendix H: Sampling Plan
As per Operations and Maintenance Manual.

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Appendix I: Warning Signs
Refer to Appendix A for signs locations.
Refer to Operations & Maintenance Manual for Department of Health information.

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Appendix J: Training/ Education
Refer to Operations & Maintenance Manual training information.

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Appendix K: Annual Report
Define the financial year of the report (e.g. 2010 – 2011). Include more than one of each one of the tables
below if more than one WWTP or different end-uses apply for the recycling scheme.

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1. Introduction
Include an overview of the project and complete the table below
Table 1 Summary of the Margaret River Water Recycling scheme
Name of Scheme Margaret River Water Recycling
Approval Number EHB-00956 + ????? (Riverslea & Standpipes)
Date of Approval 12 June 2009
Local Government Shire of Augusta Margaret River
Address of Scheme Owner PO Box 61, Margaret River
Scheme Information Description
Location Margaret River
Source of recycled water Water Corporation Wastewater Treatment Facility
Volumes of recycled water produced per year 181ML for parks, 19 for Standpipes
End uses of the recycled water Irrigation of MR public open space and Primary School
and High School MR Golf Club (approved) and now
Riverslea Subdivision and Construction Standpipes
Percentage of recycled water used in each
one of the proposed end uses
Parks and ovals = 90.5%
Construction Standpipe = 9.5%
Type of treatment system SBR Sequence Bach Reactor, storage dam, coarse sand
filtration at MR wastewater treatment facility. Further
filtration and UV disinfection for Riverslea and
standpipes
Location of the WWTP 2km north of Margaret River
Minimum, average and maximum flows per
day
Minimum Flow = 0kL
Average = 548 kL / day over year
Maximum = 1,800 kL / day
Peak inflow of the plant -
Number of people using the recycled water About 6,000
Irrigation area in m2
725,000 + construction areas
Risk exposure level Moderate
2. Quality of recycled water
2.1 Recycled water quality sampling
Include:

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Locations and dates of recycled water quality sampling
A tabulated presentation of laboratory recycled water quality test results.
An assessment of recycled water quality compliance with the Guidelines for the use of
Recycled Water in WA values
Table 2 Summary of laboratory recycled water quality results
Location
(site
code)
Parameter Units Frequency of
sampling (e.g
weekly, monthly)
Total No of
samples
Min Max Mean Median Complying
(Yes/No)
2.2 Analysis of results
Include:
Performance comparison against guidelines
Comparison against previous years data
3. Emergency and Incident Management
A summary of events and issues that affected recycled water quality and/or caused a non-
compliance with the guideline values. Include details of corrective actions/response procedures.
Include:
Power failure
Mechanical failure
Excess wastewater produced (sewerage overflow)
Effluent quality failure
Chemical spills
Major infrastructure failure or disruption
Failure in the recycling pipework or end uses of the recycled water

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Major Infrastructure Works Carried Out
Include days of the year the WWTP was no operational and the reasons for that
4. Complaints
Include a summary of public/staff complaints regarding recycled water quality.
All complaints records shall be registered immediately with the following details:
Name, contact, location and general nature of complaint;
Proposed steps to investigate complainants requests made;
Method of notification by complainant;
Regulatory authority notified (if applicable);
Table 3 Summary of complaints relating to recycled water Quality
Type/nature of the complaint Location Actions to
investigate/correct
Notification to DoH
(if applicable)
(e.g. odour/suspected illness/
ponding)
5. Audit
Include details of proposed improvements to the recycling scheme based on internal/external audit
that will strengthen the scheme’s ability to supply safe recycled water for the intended end-use(s)
Table F.4 Response to audit report
Auditor/ reviewer
comment (System
deficiency and non-
compliances)
Scheme
response
Corrective
actions to
prevent
reoccurrence
Timetable for
corrective/preventive
action
Person(s)
responsible
Completion
Date
(e.g. odour/suspected
illness/ ponding)

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The report must be signed by the chief executive officer or general manager of the water
authority.

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Appendix P: Recycled Water Supply Agreement

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Appendix Q: Hazard Analysis and Critical
Control Points
Operational monitoring is the routine, often continuous (on-line), monitoring of Critical Control
Points and Process Control Points in the WWTP to ensure compliance within the defined
operational criteria. It is used to determine if each preventative measure is effectively controlling
hazards, and provides an advance warning if treatment barriers are moving away from a stable
operational state.
CCP require operational parameters that can be measured and for which critical limits can be set to
define the operational effectiveness of the activity. The operational parameters need to be
monitored sufficiently frequently to reveal any failures in a timely manner. CCP also have process
for corrective actions that can be implemented in response to deviations from critical limits and
alert levels. Alert levels are more conservative than critical limits and represent an early warning
so that corrective actions can be implemented before a critical limit is exceeded.

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Appendix R: Operational and Maintenance
Manual of the WWTP
Not Applicable - Water Corporation WWTP

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Appendix S: Shire Operations and Maintenance
Manual

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Appendix T: System information for Forrest Rd
Shire Filters and UV System

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Appendix U: Land Capability Assessment

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Appendix V: Irrigation Volumes Margaret River
Turf Sites

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