Environmental Consulting & Remediation Services in Australia

Onterris in Australia

Providing specialist environmental and regulatory consultancy services for contaminated land and water assessment, with leading treatment technologies for industrial wastewater, groundwater and drinking water.

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Our Solutions

Global expertise,
delivered locally.

Onterris operates across Australia with multidisciplinary specialists based in Queensland, New South Wales, Victoria and South Australia.
Our teams collaborate across offices and project sites, bringing the right expertise to each project, wherever it’s needed.

View Our Locations

Our Solutions

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Contaminated Land & Remediation

Our team has successfully developed specialised strategies for typical development sites through to complex industrial and defence sites with various historical activities.

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Natural Resources

Ecological features, wetlands, waterways, groundwater systems and sensitive habitats must be understood and managed carefully as projects move forward.

Aerial view of restored shoreline habitat and aquatic ecosystem supporting nature-based environmental solutions.

Planning & Natural Resource Management

Projects move faster and perform better when environmental and cultural considerations are built in from the start.

Digger and dump truck at Brownfield site.

Community Resiliency

Through climate risk management, climate impact assessments and climate-related risk consulting, we help organizations identify where environmental threats intersect with operations and infrastructure.

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Water Consulting

Onterris helps organizations better plan, maintain compliance and build resilient operations through a deeper understanding of water systems.

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Treatment Technologies

Onterris helps organizations move from uncertainty to confident implementation through evidence-led testing, engineering, piloting and optimization that support practical, resilient treatment systems.

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PFAS Testing & Analysis

Our solutions include mobile treatment systems for short-term projects, modular turn-key systems with fast installation and quick start-up, and bespoke designs tailored to client needs.

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AFFF Cleanout and Transition

We evaluate existing systems, use proprietary rinse solutions to clean pipes and equipment, and treat PFAS-impacted rinse water to non-detect levels, enabling cost-effective onsite disposal.

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Industrial VOC Treatment

Chemical Process Industries (CPI), including chemical plants, refineries, and factories that use toxic chemicals in the course of their production processes.

Expertise

Brad May

Brad May is Managing Director and Principal Environmental Engineer at Onterris, and a Contaminated Site Auditor accredited across NSW, Queensland, Tasmania, the Northern Territory and the ACT. He brings 28 years of experience delivering contaminated land assessment, management and remediation programs across Australia and the Asia‑Pacific region.

Managing Director | SVP | Contaminated Site Auditor - Consulting - Australia

Carl Sueli

Carl Sueli is Vice President for Water Testing and Treatment Operations at Onterris in Australia, bringing more than 20 years of experience leading project delivery, operations and business performance across infrastructure and environmental services.

Vice President - Water Assessment and Treatment - Australia

Dr. Mark Breitfuss

Mark brings more than 30 years of experience in environmental consulting and research within the mining and natural resources sector. His expertise includes environmental impact assessment, social and community engagement, water policy, mine remediation and closure planning, infrastructure and energy planning and expert witness support.

Mining Sector Leader

Dr Louise Cartwright

Dr Louise Cartwright is a Principal Environmental Scientist and Contaminated Land Auditor at Onterris, with specialist expertise in contamination assessment and remediation. She supports clients to understand how contamination affects asset value, project timeframes and long-term outcomes.

Principal Environmental Scientist | National Technical Lead - Contaminated Land Auditor - Consulting - Australia

Duncan Boss-Walker

Duncan Boss‑Walker is a Principal Environmental Scientist and General Manager of the Land and Water Group at Onterris, with more than 25 years of experience delivering contaminated land and strategic water services across Australia.

Principal Environmental Engineer | General Manager - Contaminated Land & Water Assessment - Consulting - Australia

David Campbell

David Campbell is a Principal Environmental Engineer and General Manager of Assessments and Approvals, Ecology and GIS at Onterris, with more than 20 years of experience delivering complex environmental approvals and management programs across Australia.

Principal Environmental Engineer | General Manager - Assessment & Approvals, Ecology & GIS - Consulting - Australia

Romin Nejad

Romin Nejad is Managing Director of Consulting in Australia and Principal Environmental Engineer at Onterris, with more than 20 years of experience navigating Queensland’s environmental approvals framework. He specializes in primary and secondary approvals, regulatory compliance and closure planning across renewable energy, resources, utilities and waste management sectors.

Managing Director – Consulting Australia | Principal Environmental Engineer