All engineering disciplines are completed in-house, from concept through detailed design, construction, commissioning and long term licensed utility operation, providing our clients a single point of accountability across the complete lifecycle of the infrastructure.
Flow Infrastructure was established by four senior engineering professionals whose combined expertise spans more than eighty-five years in the planning, design, construction, commissioning and operation of water and wastewater infrastructure across regulated utilities and private industry.
We are an independent firm purpose built around a single discipline - water and wastewater infrastructure. We operate without the organisational layers common to larger consultancies and design firms, ensuring every client has direct access to senior expertise and the full depth of our team's experience from the outset. The team you meet is the team that delivers – senior, experienced and committed to your project from initial engagement through construction, commissioning and operations.
Flow Infrastructure holds a Building Work Contractors Licence conditioned to ‘Civil Construction Limited to Sewer and Water Infrastructure Installation’. This licence condition represents a new and unique area of specialisation within the South Australian building and construction licensing framework. The Commissioner for Consumer Affairs determined that this specialisation was appropriate having regard to Flow Infrastructure's extensive and demonstrable experience in the design, construction and operation of water and sewerage infrastructure assets, and in recognition of the critical role that specialist private operators now play in addressing the infrastructure deficit driving the housing crisis.
Since 2005, our team has collectively designed, constructed, commissioned, and operated a demonstrable range of water, wastewater, and environmental infrastructure across Australia and New Zealand.
Our team holds collective design and construction experience across 37 sewage treatment plants, 15 of which have been delivered in South Australia. Project experience spans metropolitan, regional and remote locations across South Australia, Victoria, Western Australia, North Queensland, Tasmania and New Zealand.
Our team's project history includes 14 industrial wastewater treatment facilities, encompassing process design and delivery for high-strength and complex liquid waste streams across the wine, pulp and paper, livestock, and meat processing industries.
Our senior engineering team have designed, constructed, commissioned and in some instances operated a substantial range of environmental and wastewater infrastructure.
Flow Infrastructure Pty Ltd, incorporating Flow Utilities Pty Ltd, holds certification to ISO 9001:2015 and ISO 45001:2018. The scope of certification covers the planning, designing, construction of regulated water and wastewater assets.
Certificate No. C018Q1 (ISO 9001:2015) and No. C018S1 (ISO 45001:2018), Registration No. MSC018, issued by MS Certification under JAS‑ANZ accreditation.
Flow Infrastructure's design capability considers the full technical scope of water and wastewater infrastructure, delivered entirely in-house across all engineering disciplines.
Our team holds collective design and construction experience across 37 sewage treatment plants, potable water treatment and recycling facilities, reticulation and collection networks, pump stations and storage infrastructure across metropolitan, regional and remote locations throughout Australia.
Design responsibility is continuous, the engineers who develop the detailed design remain directly involved through construction, commissioning and long-term operation ensuring technical intent is never lost in translation.
Flow Infrastructure manages construction delivery across the full scope of works with experienced on-site supervision provided by the same engineers who designed the assets.
Construction management capability encompasses programme and cost control, subcontractor management, quality assurance, hold point inspections and contract administration, maintaining full technical and commercial oversight from breaking ground through to practical completion. The design intent is maintained, construction issues are resolved with technical authority and the finished infrastructure performs as designed.
Flow Infrastructure can provide long-term operation and maintenance of water and wastewater assets including collection networks, pump stations, rising mains, treatment plants and reuse facilities.
Our operational capability encompasses day-to-day plant operation, performance monitoring, planned and reactive maintenance, regulatory compliance and reporting obligations across SA Health, EPA, Office of the Technical Regulator (OTR) and Essential Services Commission of South Australia (ESCOSA). From metering and billing to customer service management — all delivered as part of a complete utility operation.
Operating infrastructure we have designed and constructed gives Flow Infrastructure an understanding that an external operator cannot replicate. Every system, every asset and every design decision is known to the team managing it.
Flow Infrastructure provides end-to-end management across the complete lifecycle of water and wastewater infrastructure delivery - from initial feasibility and regulatory engagement through to design, construction, commissioning and long-term operations.
Our management approach is senior led and hands-on, encompassing programme control, cost management, contract administration, stakeholder and regulatory engagement and risk management. Clients have a single point of contact and a single point of accountability across every phase of their project.
There are no handoffs, no account managers and no loss of continuity. The same senior team manages the project from the first brief to the day the infrastructure goes into service.
Considered infrastructure planning starts long before design work is undertaken. Our feasibility assessments set the foundation for a project before detailed design begins. We define the technical and regulatory framework, evaluate servicing options, identify approval pathways, and establish realistic cost parameters.
Water and wastewater infrastructure sits across multiple regulatory jurisdictions, each carrying distinct approval requirements that must be navigated in the right sequence. In SA, we bring recent practical experience across SA Health, the EPA, ESCOSA, and the Office of the Technical Regulator. For projects delivered interstate, we engage with the relevant state and territory regulatory bodies with the same diligence, ensuring approvals are structured correctly and submissions are well founded.
Getting approvals right is not just a compliance exercise, it is a critical project management discipline. Flow Infrastructure prepares and manages health and environmental regulatory approvals as well as project development and planning consents. Our experience across these frameworks means submissions are technically sound, correctly sequenced and positioned to achieve approval without unnecessary delays.
Our detailed engineering design capability spans the disciplines required to deliver water and wastewater infrastructure including process, hydraulic, civil, structural, electrical and automation, all completed in-house. This means one technically consistent set of construction documents. The same team that produces them will also supervise construction, commission the assets, and in many cases, operate them long-term.
Delivering water and wastewater infrastructure on time, on budget, and to specification requires more than scheduling and oversight. We provide hands-on construction supervision and project management across civil, mechanical, electrical, instrumentation and control works, bringing the same technical depth to site as to the design office. The result is tighter quality control, faster resolution of on-site issues, and a finished asset that performs exactly as designed.
The commissioning phase is where a project either validates its design or reveals its compromises. Flow Infrastructure manages commissioning across all systems. From initial start-up and performance verification through to process optimisation. With the design and construction team involved at every step, the path to a fully optimised, compliant operating asset is shorter, sharper, and more certain.
Long term operation is where the quality of an infrastructure solution is ultimately proven. We provide licensed operation and maintenance of water and wastewater collection, pumping, treatment and reuse assets - taking full operational responsibility for the infrastructure we design and build. With deep familiarity of every system we design and operate, our team manages regulatory compliance, performance monitoring and asset maintenance with technical understanding that an external operator cannot replicate.
Operating a private essential services utility goes beyond the physical infrastructure. The Flow Group can manage the full retail utility function including customer billing, metering, service management and regulatory reporting across ESCOSA, SA Health and EPA obligations. For developers establishing private water and wastewater schemes, this means a single, experienced operator carrying the full weight of utility responsibility, from the first customer connection to ongoing compliance reporting throughout the life of the scheme.
Engaging with regulators without the right expertise is a costly exercise. Flow Infrastructure provides targeted regulatory and licensing support across SA Health, EPA, the Office of the Technical Regulator and ESCOSA, from initial obligation mapping and approval strategy through to submission preparation and ongoing compliance support. We work closely with developers and planners from the earliest stages of a project, including at code amendment and structure planning, providing technically grounded advice that shapes infrastructure strategies before they are locked in.
Residential developers across South Australia face a consistent challenge: reliance on public water and wastewater infrastructure that is governed by changing priorities, evolving capital programmes and uncertain cost frameworks. Critical servicing decisions are often required long before infrastructure commitments are confirmed.
Across metropolitan growth corridors and regional areas, infrastructure investment has struggled to keep pace with development approvals, exposing projects to three key risks.
Even where servicing has been supported in principle, commitments may be deferred, revised or withdrawn, while formal guarantees around future capacity are often unavailable. This uncertainty can affect project timelines, financing and commercial outcomes throughout the life of a development.
In a market where time directly influences cost and competitiveness, reducing infrastructure uncertainty is not simply an operational advantage - it is a commercial imperative.
Flow Infrastructure delivers purpose built, privately owned water and wastewater infrastructure on a programme that is controlled by the developer, not a public utility's capital budget. If your development is facing infrastructure uncertainty, we'd welcome the conversation.
Key technical staff are supported by a broader team spanning project coordination, procurement, site supervision, operations, and client services. Together, they enable Flow Infrastructure to deliver water and wastewater infrastructure that is robust, reliable, efficient, and compliant from the first day of operation.
This integrated structure means every element of a project is managed with the same standard of care and technical rigour that defines the firm's engineering output. No handovers to external teams, no gaps in accountability.
It is a depth of in-house capability built and refined over more than two decades — and what allows Flow Infrastructure to take a project from initial concept through to long term operational stewardship as a single point of responsibility.
As Director of Flow Infrastructure, Trent Cadman leads a senior engineering team with a combined 80 years of industry experience. Trent holds a Masters of Applied Science in Civil Engineering and an Advanced Diploma in Water and Wastewater Engineering Technology, and brings 24 years of specialist experience across the full lifecycle of water and wastewater infrastructure delivery throughout Australia and New Zealand - from initial concept and process design through to construction, commissioning and long-term operation, with a consistent focus on technically rigorous, practically constructible outcomes.
Trent has led or been directly involved in the design and construction of 37 sewage treatment plants and 14 industrial wastewater treatment facilities across Australia and New Zealand, with all engineering disciplines completed in-house. He has developed and managed certified ISO 9001 and ISO 45001 management systems, facilitated HAZOP, CHAZOP and SiD studies, and built project KPI and performance frameworks across projects ranging from $1M to over $25M in value.
In 2024, Trent led the design, regulatory approval and delivery of the first privately delivered sewage infrastructure scheme in the greater Adelaide metropolitan region. The scheme was delivered within 13 months and is now operational.
Trent combines genuine technical depth with the leadership and commercial capability required to direct complex infrastructure projects. His technical skills span the full project lifecycle from design, project planning, budgeting and financial management, construction management, quality assurance and risk identification. These are matched by the interpersonal and organisational qualities that define his effectiveness as a director - a practiced communicator who coordinates cross-functional teams and contractors with clarity, manages complex stakeholder relationships, regulators and government agencies and guides projects through each phase of the lifecycle with a focus on accountability and delivery.
His adaptability and critical thinking have been tested across diverse project environments including regional, remote and metropolitan areas, municipal and industrial, greenfield and upgrade, while his mentorship of junior staff and engineers reflects a commitment to team development that extends beyond individual project outcomes. These qualities position Trent as a director who leads from a foundation of genuine technical authority, commercial awareness and proven organisational capability.
In 2013, Trent's project work was recognised by Engineers Australia (SA) with the Malcolm Kinnaird Award for engineering excellence - awarded to the top project delivered by a South Australian firm that year.
Trent serves on the Infrastructure Committee of the Urban Development Institute of Australia South Australia (UDIA SA), which monitors the state's infrastructure planning and acts as the industry's link to power, water, road, gas and communications utilities, advocating on technical standards and regulatory change to reduce delay, cost and impacts on land affordability.
Andrew is a co-founder of Flow Infrastructure and its General Manager, bringing more than three decades of senior leadership across engineering, manufacturing and the water and wastewater sectors in operational, commercial and business roles.
He holds a Bachelor of Electrical Engineering and a Master of Business Administration, underpinned by an electrical trade background. That combination of hands-on technical grounding and commercial discipline is well suited to leading a design and construct business through its growth phase.
Andrew's water-sector career includes senior operational roles with Grundfos, where he led local production, national supply chain, after sales service, engineering and quality systems across Australia and New Zealand before moving into a broader regional role leading operations for the company's Water Utility business across Asia Pacific, including manufacturing sites in China, South Korea, Indonesia and Australia.
Beyond corporate leadership, he has built and grown businesses of his own: an engineering business in the water industry and a solar pump distribution business he established with a national presence across the irrigation and agriculture market.
As General Manager of Flow Infrastructure, Andrew is responsible for operational, commercial and business management across the firm, translating engineering strategy into structured execution and building the systems and processes that allow the senior engineering team to deliver complex infrastructure projects with certainty.
Jeremy is an electrical and automation specialist with 26 years of experience in the water and wastewater sector. He has been the lead electrical and control systems engineer across 31 sewage treatment plants and a range of industrial wastewater treatment facilities delivered throughout Australia and New Zealand, with involvement spanning the full automation lifecycle from early concept and system architecture through to detailed design, construction, programming, commissioning and operational handover.
Jeremy's technical scope encompasses the complete electrical and control engineering requirement for every facility Flow Infrastructure designs and constructs. This includes the design and construction of motor control centres and switchboards, PLC and SCADA programming, telemetry and the delivery of integrated, remotely accessible control systems governing all aspects of treatment plant operation - process sequencing, load management, alarm handling and data logging.
A core component of Jeremy's role is the preparation of functional descriptions for each treatment process, detailed technical documents that define control system behaviour, underpin operational sequencing logic and provide the verification framework against which commissioning performance is assessed.
Jeremy supervises all electrical installation works on site, ensuring field installation aligns with design documentation and relevant Australian Standards and plays an active role in commissioning verifying control system performance, testing critical control points, and confirming automated process sequences operate as designed.
Luke is a design specialist with 21 years of experience in the water and wastewater sector, and has been a core contributor to the design and documentation of 33 sewage treatment plants and a range of industrial wastewater treatment facilities across Australia and New Zealand.
Luke's technical scope covers the complete range of engineering disciplines required for water and wastewater infrastructure. As an expert CAD operator, he produces detailed construction drawings across civil and structural, hydraulic, mechanical, process, and electrical disciplines working from design briefs, project documentation and site visits to generate construction-ready outputs that meet project specifications and regulatory requirements.
In addition to his design output, Luke holds supervisory responsibility for Flow Infrastructure's in-house design team, coordinating documentation across multiple concurrent projects to ensure accuracy, programme compliance and consistency with the firm's design and construction standards.
Having spent his entire career within the same close-knit engineering team, Luke brings an institutional depth of process and design knowledge that underpins the speed, accuracy and technical consistency of the firm's documentation output.
Providing reticulated water and sewerage services in South Australia requires a Water Industry Retail Licence issued by ESCOSA under the Water Industry Act 2012. Flow Infrastructure's Director, Trent Cadman, holds direct, recent experience securing this licence having led a successful application in 2024 for a project now fully constructed, commissioned, and operational.
The application process encompassed technical, governance, financial and regulatory assessment, including engagement with SA Health, the EPA, Department of Enviroment and Water and other relevant authorities.
Flow Utilities is currently progressing its own licence application and with an established understanding of ESCOSA's requirements and assessment process, is well positioned to secure approval within standard timeframes. The licence is required prior to the commencement of commercial operations and customer billing not during design and construction stage of a project.
For larger scale infrastructure projects, Flow Infrastructure works collaboratively with developers and land owners under a range of commercial structures including joint venture, co-investment and fully integrated design, construct and operate models. These arrangements are tailored to suit the specific staging strategies, funding requirements and risk allocation objectives of each project.
Capital structuring can be configured across a spectrum of models from upfront capital participation and progressive funding mechanisms through to long-term revenue sharing arrangements tied to operational performance. By aligning the commercial structure with technical delivery from the outset, projects benefit from unified accountability, disciplined risk management and stronger programme and cost certainty.
This integrated approach ensures infrastructure is not only appropriately funded and properly constructed, but operationally robust and financially sustainable across its intended service life. For developers, it removes the fragmentation that typically exists between capital, design, and delivery replacing it with a single, technically and commercially capable partner across the full project lifecycle.
Every project starts with a conversation. Whether you're at concept stage or ready to proceed, we're available to discuss your water or wastewater infrastructure requirements. Please complete the form or call (08) 8151 4039.