Wastewater infrastructure and modelling
Our advanced modelling, design and analysis help water companies, local authorities, developers and lead consultants plan, optimise and future‑proof water and drainage infrastructure.
Our team of hydraulic modellers, civil engineers and environmental specialists work closely with clients to understand complex catchment behaviour, develop robust evidence bases and design interventions that are sustainable, cost‑effective and operationally resilient. We maintain the high regulatory, environmental and ethical standards expected across the UK water industry, with a business culture built on transparency, collaboration and strong long‑term relationships.
Our capabilities
We bring extensive expertise in wastewater and urban drainage modelling, including overland flow, river systems and water quality pathways. Using industry-leading tools and bespoke software solutions, our specialists develop detailed network models to assess system performance, identify risk hotspots, and support investment planning.
Catchments are interconnected and effective solutions must be too. We model fluvial, pluvial and urban interactions to build a complete picture of flow patterns and their impacts on multiple stakeholders. This integrated understanding supports more accurate problem definition and better targeted interventions that address root causes, not just symptoms.
From property-level flooding to strategic drainage planning, we assess flood risk, design stormwater and SuDS solutions, and evaluate drainage network capacity. Our engineers work to reduce surface water run-off, mitigate flood impacts and support climate resilient development.
We produce robust drainage designs for new developments, infrastructure upgrades and network optimisation. This includes hydrological assessments, hydraulic design, sewer capacity evaluation and sustainable drainage schemes that balance performance with cost and environmental value.
High-quality data underpins effective modelling. We offer GIS analysis, data management, bespoke software development and model build verification services. These capabilities help reduce project costs and implementation time by improving data confidence and streamlining workflows.
Our approach
Client-focused collaboration
We pride ourselves on building honest, transparent and long term partnerships with clients, an approach reflected in its high levels of repeat business. The team ensures that every project is led by an experienced specialist, guaranteeing consistency, quality and confidence at every stage.
Technical excellence throughout
From early-stage catchment diagnosis to long-term asset planning, we provide end-to-end expertise across modelling, analysis, design and implementation support. Our experienced engineers draw on decades of industry knowledge to deliver solutions that are sustainable, innovative and environmentally responsible.
Innovation for efficiency
We develop bespoke tools and processes that reduce modelling time, improve accuracy and deliver better outcomes. This focus on innovation supports clients in meeting regulatory expectations, accelerating project delivery and optimising investment.
Who we work with
- UK water companies
- Local authorities
- Developers
- Multidisciplinary consultancies
- Environmental and regulatory bodies
As part of Aqua Consultants, RES Environmental strengthens our ability to deliver sector-leading technical expertise across modelling, planning, environmental management and integrated engineering services.
Why Aqua Consultants + RES Environmental?
By integrating RES Environmental’s specialist modelling, drainage and catchment expertise with our strategic advisory and engineering capabilities, we offer clients:
- A complete catchment-to-asset capability
- Enhanced modelling, forecasting and design capacity
- A unified approach to environmental outcomes and regulatory compliance
- Greater resilience and accuracy in long-term planning
- Consistent delivery across engineering, digital and environmental services
This combined strength allows us to support the water industry’s biggest challenges, from pollution reduction and climate resilience to optimal drainage network performance.
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