Purpose of the role

To lead technically rigorous water circularity assignments that help industrial and infrastructure clients reduce freshwater dependence, manage wastewater and effluent risk, evaluate reuse and recycling options, and make defensible operational and investment decisions. The role sits between strategy and engineering: it must convert site and portfolio evidence into practical options, transparent calculations and proportionate next steps without claiming a level of feasibility or certainty the evidence cannot support.

Technical scope

Industrial water and wastewater management, including process and utility water use, wastewater generation, discharge routes and treatment interfaces.
Site water audits, maturity assessments, data-quality review, water balances, metering strategies and diagnostic analysis.
Identification, quantification and prioritisation of no-cost, low-cost and capital water-efficiency opportunities.
Water reuse and recycling optioneering, including water-quality versus use-requirement matching, source-to-use matrices, volume matching and constraints assessment.
Wastewater and trade-effluent characterisation, sampling strategies, discharge review, source control and treatment-performance evaluation.
Treatment-technology screening and technical due diligence, including comparison with conventional options, readiness, operating requirements, residuals and implementation risk.
True-cost-of-water and water-energy-chemical trade-off analysis, including avoided costs and unintended-consequence checks.
Scenario analysis and business-case inputs, with transparent assumptions, ranges, confidence levels and clear gates for site-specific feasibility or engineering.
Water-quality and emerging-contaminant interfaces, particularly pharmaceuticals, ecotoxicity, micropollutants, mixing zones and industrial discharge risk.
Industrial and mine-impacted water assessments where treatment, risk, reuse or operational optimisation are central.

Key responsibilities·

Lead technical workstreams and projects from scoping through fieldwork, analysis, client workshops, reporting and close-out.
Interrogate client data, identify gaps and design proportionate evidence-gathering plans, including site visits, interviews, sampling or specialist studies where justified.
Prepare and review calculations, models, option matrices, technical memoranda, reports and client-ready decision products.
Provide senior technical direction to consultants and analysts working on data compilation, water balances, research and opportunity calculations.
Coordinate specialist inputs from process engineering, civil engineering, hydrogeology, hydrology, ecotoxicology, permitting, economics and digital teams.
Act as a trusted technical adviser to client operations, engineering, EHS, sustainability and procurement stakeholders.
Support proposals and extensions by defining a credible evidence protocol, method, deliverables, assumptions, exclusions, level of accuracy and resourcing plan.
Maintain project commercial control, quality, health and safety, risk management and governance consistent with the CL3 Consulting profile.
Contribute to development of the Water Circularity offer by codifying sound methods, templates, case studies and technical proof points. This is secondary to delivery and should arise from live work rather than become a separate team-building mandate.

Essential experience and capability·

Demonstrable professional experience in industrial water, wastewater, environmental engineering, water efficiency, treatment, reuse or circular water systems.
Ability to lead a site or portfolio water assessment independently and convert incomplete operational data into a transparent, technically defensible analysis.
Practical understanding of industrial water systems such as cooling, cleaning, process use, boilers, wastewater treatment, effluent discharge and reuse interfaces.
Experience with water balances, opportunity calculations, technology screening, treatment-performance review and implementation constraints.
Sound judgement about the boundary between screening, conceptual optioneering, feasibility, design and implementation, and the ability to explain that boundary clearly to clients.
Experience working with industrial sectors such as pharmaceuticals, food and beverage, manufacturing, chemicals, energy, technology/data centres or mining.
Strong technical writing, structured problem-solving, data analysis and client communication.
Experience leading projects or technical teams, with responsibility for scope, budget, programme, risk and quality.
Relevant degree or equivalent professional background in environmental, chemical, civil or water engineering, environmental science or a closely related field.

Desirable capability

QUEST or comparable industrial resource-efficiency and audit methodology experience.
Experience in trade-effluent permitting, industrial discharge compliance, ecotoxicology or micropollutants
Experience constructing true-cost-of-water, marginal-abatement or scenario models for water investment decisions.
Experience conducting field audits, specifying sampling or measurement plans, or working alongside engineering teams on feasibility and implementation.
French or another European language, particularly where it supports EMEA industrial and pharmaceutical delivery.

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ERM is committed to creating an inclusive workplace where everyone feels valued, respected, and empowered to thrive, it’s an essential part of what makes ERM a great place to build a career and helps us create better solutions for our clients.

We welcome talent from all backgrounds and provide equal opportunities for every candidate. If you have a disability, are neurodivergent, or need accommodations during the selection process, we’re here to support you. Our commitment doesn’t stop at hiring. Once you join us, we’ll ensure you have the tools, support, and adjustments needed to succeed and feel a true sense of belonging. Learn more about our Diversity, Inclusion & Belonging (DIB) efforts by visiting our website or exploring our 2026 Sustainability Report.

About Us

At ERM, sustainability is our business.

We are the world’s largest advisory firm focused solely on sustainability, offering unparalleled expertise across business and finance.

ERM partners with clients to operationalize sustainability at pace and scale, through our unique combination of strategic transformation and technical delivery capabilities.

Our diverse global team of experts works with the world’s leading organizations to help them set clear sustainability targets, measure progress and operationalize strategy through deep implementation and business transformation.

With more than 50 years of experience, our ability to integrate sustainability solutions and our depth and breadth of technical knowledge are why organizations choose to partner with us as their trusted advisor.

Every one of us firmly believes in the potential to create value for our clients through an integrated approach to sustainability (because we have personally seen it and professionally achieved it).

Our team members are passionate about client service. We work closely with our clients to help them operationalize their sustainability goals and meet their environmental, health and safety objectives while advancing ERM’s purpose through delivering tangible progress in what the United Nations coined The Decade of Action.

Organizing our people across globally integrated communities of technical and strategic talent positions ERM to be a “boots to boardroom” leader in bringing that value creation to our clients, partners, and the world.

We recruit exceptional professionals with a personal and professional passion for sustainability and nurture them to even greater success as specialists. We prepare our consultants to bring integrated, innovative and sustainable solutions to our clients and provide opportunities for ongoing development across a variety of subject areas related to technical, business, and personal growth.

At ERM, effort pays off and becomes career defining work that leaves a positive imprint on our planet.

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