WaterWastewater Collection, Treatment and DisposalWater Resource ManagementWater Supply and TreatmentSouth Australia
14 April 2026
Water engineering is where Tonkin made our name. For decades, Tonkin has been a leader in water engineering, particularly in South Australia where our business was founded more than 70 years ago.
Water engineering is where Tonkin made our name. For decades, Tonkin has been a leader in water engineering, particularly in South Australia where our business was founded more than 70 years ago.
More recently, we have expanded to Queensland and New South Wales, where we now have dedicated water teams. Our water engineers in Brisbane and Sydney work collaboratively for clients across Australia’s east coast providing a full range of water engineering services.
In addition to our east coast offices, Tonkin has five other offices around Australia, with more than 200 team members across the country.
Our water engineering capabilities include:
- Planning and concept development
- Detailed design
- Water and wastewater networks
- Water treatment facilities
- Integrated water management
- Mechanical engineering
- Hydraulic engineering
- Modelling
- Trunk infrastructure
- Planning assessment
- Development assessment
- Stormwater management
- Water reuse and recycling
Tonkin's East Coast Water Team Leads
Meet Pat
East Coast Water Lead
Patrick is Tonkin’s East Coast Water Lead with 15+ years of industry experience. He brings a strong track record of performance in engineering, leadership and project management in the water and wastewater industry. His skills and experience have been developed across a wide variety and large number of water projects.
Meet Rohan
NSW Water Lead
Rohan is a Principal Civil Engineer who leads Tonkin’s NSW Water Team and has 15+ years’ experience working in the water and wastewater industry. Rohan is well versed in the engagement and coordination of stakeholders on multidisciplined water projects. His broad skillset ranges from pipeline design and transients modelling and analysis, to managing design teams and subconsultants.
Tonkin's water skills and experience
Tonkin's water engineers in Brisbane and Sydney work with a variety of clients, from state and local governments, to water authorities and developers.
Water engineering sits at the heart of the modern infrastructure that support communities across Australia's fast-growing east coast regions. Wastewater treatment and potable water supply are more critical than ever, particularly with increasing populations and the housing shortage that many communities are facing.
Tonkin's east coast water team is well-positioned to assist throughout the full lifecycle of water infrastructure - from planning and concept development, to detailed design, construction and asset management.
We understand the importance of maintaining secure water supplies and sensitively managing water to maximise the benefits for future generations.
Water engineering sits at the heart of the modern infrastructure that support communities across Australia's fast-growing east coast regions. Wastewater treatment and potable water supply are more critical than ever, particularly with increasing populations and the housing shortage that many communities are facing.
Tonkin's east coast water team is well-positioned to assist throughout the full lifecycle of water infrastructure - from planning and concept development, to detailed design, construction and asset management.
We understand the importance of maintaining secure water supplies and sensitively managing water to maximise the benefits for future generations.
Are you looking for a civil or water engineer in Queensland or New South Wales to assist with your project?
If you need a consultant civil, water structural engineer in Brisbane, Sydney or surrounding areas, please drop us a line or call on 07 3886 1394 (Brisbane) or 02 9409 3300 (Sydney).
Looking for engineering jobs or internships in Queensland or New South Wales?
Are you a civil engineer and want to join Tonkin's water team?
Please contact Pat Tunnah – East Coast Water Lead for a confidential conversation or view our current opportunities.