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GHD is at the forefront of the water industry, delivering sustainable water solutions across the globe, covering every element of the water cycle for urban, rural and industrial water applications.

As the world’s population grows and our standards of living improve so does our need to manage the water in our environment. We need to maximise its application for human well-being and minimise impact on the environment. GHD engineers, scientists and planners can provide sustainable, cost-effective and innovative water solutions.  We assist water utilities and others who provide water services to optimise infrastructure and adapt to environmental changes in ways that balance the needs of our communities. And we enable clients to meet compliance, improve profitability and maintain their commitment to sustainability.

GHD continually expands the boundaries by engaging in research, enhancing existing systems and strategies, evaluating new procedures and transferring technology from other industries into the water industry. We work with our clients through all project stages planning, investigation, design, delivery, operation and renewal.

The end result is GHD is delivering significant projects all over the world. Examples include desalination plant work in Australia, USA, Mexico, Africa and the Middle East; major water recycling projects like the Western Corridor Recycled Water project in Australia; and work on a wastewater treatment plant so that it meets high nutrient removal standards to protect the quality of water in Chesapeake Bay in the USA. But significance is relative. Every project is important to our clients and we at GHD pride ourselves on the efficient and effective delivery of every commission large or small.

We're proud of our formidable knowledge-base, and we've won many industry awards for innovation and outstanding project delivery. Our people can provide sustainable, cost-effective and innovative water solutions for your next project. We are committed to sustainable development, safety and innovation. We care for the wellbeing of our people, assist communities in need and conduct business in an ethical and environmentally responsible manner.

For further information, contact:

Sioban Hartwell – Water Market Leader NZ
T: +64 29 355 1427
E: Sioban Hartwell

Hunua 4 Watermain

Hunua 4 Watermain

The Hunua project is the biggest water pipeline project undertaken in New Zealand for many years and involves 30 kilometres of 1.3 to 1.9 metre diameter steel pipeline traversing Manukau and Auckland cities. It involves the crossing of Manukau Harbour, three motorways, three railway lines, a creek and eight streams.

GHD was engaged in 2005 to carry out an options study for a new watermain from 'southern sources' to 'city centre'.  As a result of a competitive tender, GHD was jointly awarded the design contract in strategic partnership with engineering consultancy CH2M Beca in 2008.

Read More . . .

Clear Harbour Alliance

Christchurch wastewater overflows – consent application

With the growth of Auckland City, the combined stormwater/wastewater system was exceeding capacity during rainfall events, resulting in pollution of the Waitemata Harbour. A conventional project model could not guarantee the level of service that Metrowater wanted for their customers during the separation process so they decided on an Alliance model – one that was strongly customer focussed. The project goal of cleaning up Auckland’s harbour was a philosophy of shared ownership and responsibility reflected in the principle – "it's ours".

Metrowater is Auckland City's water and wastewater utility and was established by Auckland City Council to provide water and wastewater services to over 142,000 homes and businesses, reaching 420,000 people across Auckland City. The area of operation covers 153 square kilometres with a water and wastewater network of more than 3,600 km of pipes. Metrowater’s expectation is that their customers receive the highest quality, reliable water supply possible and that Auckland City’s wastewater networks are managed in a cost effective, environmentally sound and sustainable manner.

Read More . . .

Aquatic Sciences
Aquatic Sciences
Asset & Facilities Management
Electrical Engineering
Electrical Engineering
Industrial Water & Waste
Industrial Water & Waste
Instrumentation & Control
Instrumentation & Control
Integrated Water Management
Integrated Water Management
Materials Technology
Materials Technology
Wastewater Systems
Wastewater Systems
Wastewater Treatment
Wastewater Treament
Water Efficiency
Water Efficiency
Water Treatment and Desalination
Water Quality and Treatment
Water Transmission and Distribution
Water Systems
Waterways & Coastal
Waterways & Coastal


Chris Hertle

key person image

Chris leads our water practice in Australia. He is a chemical engineer with more than 30 years’ experience in industrial and municipal water, wastewater and solid waste management. This has covered investigations, pilot plants, design, specification, tendering, installation, commissioning and operations. Chris has been responsible for successfully implementing innovative resource recovery schemes including anaerobic treatment, oil from sludge, electrowinning of metals, Australia’s first membrane bioreactor, and the first aerobic granular system at a brewery. He has a passion for challenging designs and coming up with alternative approaches that are cost effective. At GHD, Chris has played a key role in the roll out of our innovation program and helped grow the Innovation Interchange. He has written more than 40 technical publications in the water and wastewater field, and is a highly-sought after speaker at industry conferences.

Market Leader, Water – Australia
+61 7 3316 3710
E: Chris Hertle

Patty Chier – Canberra

Patty Chier

Patty has more than 15 years’ experience spanning drinking water and recycled water management to the development of environmental management and contingency plans, to assessing human health risk and environmental risk and impacts of contaminants on river health. She is an accredited auditor with Exemplar Global and has performed HACCP audits of a number of water authorities in Victoria as well as ActewAGL’s water treatment plants. Patty has particular experience in applying a risk-based approach, consistent with AS/NZS ISO 31000:2009 standards to evaluate impacts of activities (such as urban developments or wastewater discharges) on environmental values. She is also skilled in developing water quality risk management plans for drinking water, industrial use and water reuse.

Market Leader, Water – Canberra
T: +61 2 6113 3294
E: Patty Chier

Bernard Clancy – New South Wales

Bernard Clancy

Bernard is a civil engineer with more than 25 years’ experience in the water sector, spanning strategy planning, design and commissioning of new assets and facilities. He has led or held key roles in many multidisciplinary teams delivering major infrastructure within a range of relationship-based contracts including the master plan for the water and sewer schemes of Gosford City Council to 2051. His extensive knowledge of biosolids, has seen him lead Sydney Water’s Biosolids Strategy, and manage the design of the Malabar Process and Reliability Renewal Improvement Project.

Market Leader, Water – Sydney
T: +61 2 9239 7416
E: Bernard Clancy

Mark Gebhard – Newcastle

Mark Gebhard

Mark is a chemical engineer with more than 21 years' experience in heavy industry, with the last 12 years spent in the water and waste industries. He has extensive knowledge of the planning, design, construction and operation of water and wastewater conveyance and treatment systems, having led several medium and large strategy and design projects. These include managing projects to provide recycled water schemes to the townships of Gillieston Heights and Chisolm, developing options and concept design for the integration of a UV system into the Singleton sewage treatment plant, and assessing trade waste and inflow infiltration for the RAAF. Prior to GHD, Mark was Hunter Water Corporation's Manager, Treatment Operations and a pivotal member of the Hunter Treatment Alliance.

Market Leader, Water – Newcastle
T: +61 2 4950 4112
E: Mark Gebhard

Rob Saunders – North Queensland

Rob Saunders

Rob is a civil engineer with 30 years’ experience in the water sector, including senior management roles within both consulting and water utility businesses. His extensive skills include planning, design, development, operation and management of a broad range of water infrastructure/services for the municipal, industrial, mining and rural sectors. Rob has been responsible for delivering a range of major water infrastructure projects in North Queensland, including the AUD140 million Townsville Water Supply Upgrade Project, the AUD189 million Townsville Wastewater Upgrade Project and the AUD115 million Ross River Dam Upgrade Project. He has also held industry leadership roles with the Australian Water Association, Australian National Committee on Large Dams, and the Queensland Water Directorate and Engineers Australia.

Market Leader, Water – North Queensland
T: +61 7 4720 0479
E: Rob Saunders

Jill Woodworth – Northern Territory

Jill Woodworth

Jill has more than 30 years’ experience in managing wastewater and drinking water quality project. She is highly skilled in the water treatment discipline and focused on mitigating the environmental impacts of wastewater discharges from the water sector, mining, oil and gas and contaminated sites industries. Jill is knowledgeable in the application and interpretation of federal and state water, sediment and soil quality guidelines, and well-respected for her work as an ecotoxicologist. She is a member of the Society of Environmental Toxicology and Chemistry, Australian Water Association and Australian Marine Science Association.

Market Leader, Water – Northern Territory
T: +61 8 8982 0127
E: Jill Woodworth

Danny Grzan – South Australia

Danny Grzan

Danny has more than 20 years’ experience in the environmental, civil and water sectors. His skillset includes planning, design, development and management of a broad range of water infrastructure/services for the municipal, industrial, mining and environmental sectors. Danny has led or held key roles in many multidisciplinary teams delivering major infrastructure within a range of contract types, including the Murray Darling Basin. These projects have included investigations and designs for civil works on the Murray River and the associated floodplain.

Market Leader, Water – South Australia
T: +61 8 8111 6555
E: Danny Grzan

Warren Traves – South Queensland

Warren Traves

Warren joined GHD in 1988 and has worked with the company in Brisbane, Cairns and Manila across a variety of disciplines, with a particular focus on water. He has played key roles in the Northern Manila Water Supply Project for Maynilad Water and the South East Queensland Water Strategy. Warren was Concept Design Manager and Engineering Manager for the Western Corridor Recycled Water Project in Queensland. On the industry front, Warren was a member of the Australian Water Recycling Centre of Excellence Research Advisory Committee from 2010-2012, and a member of the Advisory Board for the Advanced Water Management Centre at the University of Queensland. He currently chairs the Queensland Regional Advisory Panel of the CRC for Water Sensitive Cities. Warren is also a former Director of GHD.

Market Leader, Water – South Queensland
T: +61 7 3316 3665
E: Warren Traves

Sarah Wheeler – Tasmania

Sarah Wheeler

Sarah has more than 20 years’ experience in design and project management. Specialising in water and wastewater treatment, she has managed multidisciplinary design teams for various water and wastewater projects including the Launceston Sewerage Improvement Program, Queensland Urban Utilities’ Enterprise Excellence Program, and the Inner Doha Resewerage Implementation in Qatar, to name a few. She is an energetic team leader, and has a strong record of successfully delivering designs whilst closely managing commercial arrangements for clients. Sarah is part of the Tasmanian senior management team and is the Client Relationship Manager for TasWater.

Market Leader, Water – Tasmania
T: +61 3 6332 5544
E: Sarah Wheeler

Mark Monaghan – Victoria

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With more than 17 years’ experience in the water industry, both in Australia and internationally, Mark is charged with overseeing the strategic direction of the water sector and the development of GHD’s water business in Victoria. These services include water resources planning, dams, water and wastewater treatment, transfer and collection systems, and recycled water. His skillset includes master planning and high-level strategic development for major water and wastewater infrastructure. With strong leadership and management skills, Mark has worked on a variety of water and wastewater infrastructure projects ranging from high level strategic assessments through to concept/functional and detailed design and construction. Mark is a member of the Australian Water Association and Engineers Australia.

Market Leader, Water – Victoria
+61 3 8687 8000
E: Mark Monaghan

Blair Shackleton – Western Australia

Blair Shackleton

Blair is a chartered chemist with more than 33 years’ experience in the water and power industries, encompassing plant design, process monitoring, troubleshooting, operations support, and project management roles. He aims to provide appropriate sustainable solutions to our clients’ water supply and wastewater disposal requirements, whilst achieving high standards in safety in design and environmental management. Blair has held lead design roles in many water treatment and water supply system developments, ranging from ‘tiny towns’ potable water supplies up to very large desalination plants, including municipal, industrial and power station water management systems.

Market Leader, Water – Western Australia
T: +61 8 6222 8030
E: Blair Shackleton


George Godin

George Godin

George leads our water and wastewater practice in Canada, overseeing the business development and project delivery of municipal infrastructure engineering activities. His career spans more than 35 years in municipal wastewater engineering, and his significant experience encompasses environmental assessment, planning, detailed design and construction services for medium to large municipal wastewater treatment facilities. He has fostered trusted relationships with many large municipal clients and managed wastewater infrastructure capital projects and programs up to CAN550 million. George’s wide-ranging skillset includes water quality trading, conventional secondary treatment, tertiary and advanced wastewater treatment systems using low and high pressure membrane technology to achieve ultra-low Total Phosphorus effluent limits.

Principal, Water and Wastewater – Canada
T: +1 519 884 0510
E: George Godin


Mauricio Ruz

Mauricio Ruz

Mauricio is experienced in water resources management, hydraulic design, piping, hydrology, and business management and administration. He has a particular focus on the design, development and operation of simulation models for hydrological and hydraulic systems.

His career spans a diverse range of infrastructure, including dams, hydropower plants, piping systems, pump stations, open channels, potable water projects, drainage systems, and oil and sands projects. Mauricio graduated in civil engineering from Universidad de Chile and also holds an MBA from Universidad Adolfo Ibáñez.

Service Group Manager, Water – Chile
T: +56 2 24295794
E: Mauricio Ruz

New Zealand

Sioban Hartwell

Sioban Hartwell

Sioban is a civil engineer with more than 25 years’ experience working in New Zealand (NZ), Australia and the USA across a broad range of water infrastructure projects. Her skillset covers minewater management, urban stormwater and irrigation and in recent years she has primarily acted as a project manager delivering large multi-disciplinary projects. This included secondment to Solid Energy NZ as a project manager for all technical studies associated with delivering the business cases for new mines, and managing design and construction of the Central Plains Water Headrace in Canterbury. Sioban was on the Board of Water New Zealand for five years with one year spent as President. She also sat on the NZ Minerals Association Council for three years.

Market Leader, Water – New Zealand
T: +64 3 378 0992
E: Sioban Hartwell


Paul Hansford

Paul Hansford

Paul has more than 30 years’ experience in civil infrastructure and, in particular, the water sector. Based in the Philippines for the past 15 years, he has worked on a variety of projects around the world, including dams, water and wastewater treatment systems, transfer and collection systems. He has been involved in all phases of these projects, ranging from high level strategic assessments through to concept/functional and detailed design as well as construction phase services. Paul is currently responsible for the development and strategic direction of GHD’s water business in the Philippines.

Market Leader, Water – Philippines
T: +63 2 479 5751
E: Paul Hansford


Bassam Halabi

Mike Graver

Bassam’s wide-ranging skills will enable him to add value in a variety of areas to deliver quickly and efficiently. His experience encompasses infrastructure strategy and policy, water supply modelling, water quality, risk, health and safety management, irrigation systems, and leakage, pressure and demand management.

Bassam has also undertaken work on complex projects in challenging conditions across a number of geographic regions.His leadership skills and practical approach are invaluable when quick decisions are required in complex circumstances.

Market Leader, Water – Qatar
T: +974 4 428 9579
E: Bassam Halabi

United Kingdom

Stewart Tennant

Stewart Tennant

With 25 years’ experience in the water industry, Stewart is focused on safe, economic and sustainable solutions for clients, working closely with both contractors and water companies.

A civil and structural engineer by training, he possesses a broad knowledge of the process, mechanical and electrical disciplines to develop holistic client outcomes.

Stewart’s diverse career spans multidisciplinary design and construct project across the entire water cycle, from impounding reservoirs and raw water aqueducts to water and wastewater treatment, and advanced sludge treatment. He is a Fellow of the Institution of Civil Engineers.

Operations Director – Manchester & Glasgow Offices
+44 161 491 4600
E: Stewart Tennant


Thor Young

Thor Young

Thor has more than 20 years' experience in the planning, design, and construction management of water and wastewater systems. He specialises in treatment facility design and plant operations, having managed projects from study through design and construction, with a capital cost of up to USD140 million .

His capabilities also include enhanced biological nitrogen and phosphorus removal, advanced wastewater treatment processes, headworks facilities, membrane bioreactors, and solids stabilisation and dewatering systems. Thor is a member of the International Water Federation and the Water Environment Federation, and has presented papers on a wide variety of topics at local and international conferences.

Service Line Leader, Wastewater Treatment & Recycling
T: +1 240 206 6846
E: Thor Young


  • Hoxton Park Recycled Water Scheme Stage 1, High Commendation Infrastructure Innovation Award (NSW) – Australia Water Association
  • Chatham Water Pollution Control Facility (WPCF) Phase I Improvements, Bronze Award - American Council of Engineering Companies, Massachusetts Division
  • Opua Sanitary Works Subsidy Scheme, Hirepool Construction Award (NZD 1-5 million category) – New Zealand Contractors’ Federation


  • Bulk Water Alliance (Includes GHD): Enlarged Cotter Dam
    • Australasian Project of the Year - International Water Power & Dam Construction
    • National Program Innovation Award (Rock Reef habitat for endangered Macquarie Perch) - Australian Water Association
    • 2013 Award for Excellence - Engineers Australia (Canberra)
    • 2013 Award for Excellence - Highly Commended - Concrete Institute of Australia



  • Tetra-Trap Stormwater Device, Arthur Mead Award, Environment and Sustainability, Institute of Professional Engineers New Zealand
  • Sandgate Avenue Drainage Stage 1, Pipelines Alliance
    • Earth Award (Victoria), Civil Contractors Federation
    • Excellence Award (Victoria), Infrastructure projects >AUD20 million category, Engineers Australia
  • Southern Seawater Desalination Integration
    • Excellence Award (Western Australia), Overall Winner, Engineers Australia
    • Excellence Award (Western Australia), Infrastructure and Building Category, Engineers Australia
    • Excellence Award (Western Australia), Management of Engineering Category
  • Christina West, Young Engineer of the Year, Engineers Australia
  • Onondaga County Water Authority, Technical and Management Innovation Award, Projects > USD15 million, American Public Works Association
  • Canal Landing Park, Village of Layetteville, Environmental Project of the Year Award, American Public Works Association
  • Town of Chatham Comprehensive Wastewater Management Planning, Grand Prize for Planning, International American Academy of Environmental Engineering
  • MSABI Safe Water for Better Health Project, Development Award, Hardware Water Category, International Water Association
  • Sandy Tripp, Stanley E. Kappe Award, International American Academy of Environmental Engineering


  • Coffs Harbour Water Reclamation Plant, Recovering, Recycling & Reusing Award, Institute of Public Works Engineering Australia
  • Nyrstar Groundwater Interception System, Silver Award, Environmental Category, Consult Australia
  • Victorian Desalination Project, Silver Award, Environmental Category, Consult Australia