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Arup

Arup is a global firm of designers, engineers, planners and business consultants. We deliver high-quality projects and services by bringing together skilled professionals from diverse and specialist disciplines.

A clear proposition, a unique identity, a leading approach

From the outset, we’ve taken an integrated approach to each new challenge. Our business has innovation and expertise at its heart, applying creative responses to meet individual project demands. This is more than the development of new ideas – it is also about a fresh, informed approach, an open-minded attitude to problem solving and an ability to brainstorm problems without being bound by preconceptions.

For six decades, we have led change and development with these fundamental values. We are creative and commercial. We offer premium service with greater efficiency. We provide global solutions that are locally and sustainably delivered. We are technically advanced and, most importantly, we listen to our client’s individual needs.

Trusted advisors, a full-spectrum water consultancy service

The company’s worldwide experience in this arena covers all aspects of engineering, management and consultancy, spanning the whole water cycle in temperate, arid and tropical environments. From engineering to design implementation, and from site supervision to total project management, ours is a globally-trusted reputation.

UK Water Projects

The company has supported UK Water Companies and their Contract Partners to deliver AMP capital programmes on time and on budget. Goals and visions set out at the outset are being achieved whilst maintaining good working relationships.

Ammanford Flood Risk Management (2024)

An integrated scheme to better protect 349 homes against the impacts of climate change while unlocking more than 20km of river to migratory fish

Dunore Point Energy Storage Project (2024)

Storing surplus energy from on-site solar panels at one of NI’s largest water treatment plants is a vital step in NI Water’s journey to net zero

Llyn y Fan Fach Reservoir (2024)

Grade II listed structure that underwent refurbishment to address safety concerns in the draw-off tower and spillway

Porthcawl Sandy Bay Coastal Scheme (2024)

Innovative restoration of a historic breakwater, better protecting a community, enhancing amenity and biodiversity while unlocking regional regeneration

Rotherwas WwTW (2024)

Wastewater treatment upgrades for eutrophication mitigation and environmental compliance to remove phosphorus from the River Wye

Witches Oak WTW: Green Recovery - Decarbonising Water Resources (2024)

The challenges of designing and constructing the Witches Oak programme of works on multiple sites to a condensed timescale

Norton, Presteigne & Weobley WwTWs (2023)

The Rivers Lugg and Wye have been identified as having high levels of phosphorus, which is causing eutrophication of these watercourses. Norton Wastewater Treatment Works (WwTW) discharges treated final effluent to the Norton Brook, a tributary of the River Lugg. Presteigne WwTW discharges treated final effluent directly into the River Lugg downstream of the Norton […]

Witches Oak WTW: Green Recovery - Decarbonising Water Resources (2023)

In the summer of 2020, the water industry was set a challenge by its regulators to identify ways to support the country’s green economic recovery from Covid-19. Severn Trent responded with a number of proposed programmes, including Decarbonising Water Resources (DWR), the subject of this paper. The objective of the DWR programme was to provide […]

Ely Bridge Tree Catcher (2022)

As the River Ely flows towards Cardiff Bay, it passes under the A48 Cowbridge Road bridge in Cardiff. During periods of heavy rainfall, debris collects around the bridge’s central pier, reducing the capacity of the bridge and partially blocking the flow of the river. Blockages significantly increase flood risk locally, and once debris has accumulated, […]

Plas Uchaf Reservoir (2022)

The construction of Plas Uchaf Reservoir was completed in 1870. It has an embankment dam that is approximately 15m high, with a puddle clay core. It has a retained capacity of 225,500m3 and a surface area of 3.5ha. The reservoir is formed across a tributary of the River Elwy, with Dolwen Reservoir located approximately 0.7km upstream of Plas […]

Ynys-y-Fro Lower Reservoir (2022)

The Ynys-y-Fro Reservoir system is situated 1km north-east of High Cross, Newport. The system comprises two reservoirs in cascade: an upper ‘subsiding’ reservoir and a lower ‘old pond’ reservoir. The upper reservoir is immediately upstream of the lower reservoir. The lower reservoir was constructed as an earth embankment dam and was built for the supply […]

Dolwen Reservoir (2021)

Dolwen Reservoir is a Category A Large Raised Reservoir as defined under the Reservoirs Act 1975. It is located on a tributary of the River Elwy, 0.7km upstream and north of Plas Uchaf Reservoir, near Abergele, Conwy, Wales. It was constructed in 1905 and has a capacity of approximately 288,185m3. Dŵr Cymru Welsh Water commissioned […]

Lower Neuadd Reservoir (2021)

Lower Neuadd Reservoir is located in the Brecon Beacons, 5km north of Merthyr Tydfil in south Wales. The reservoir, which is an embankment dam, was constructed in 1884. It is the middle of a cascade of three reservoirs, with Upper Neuadd situated 3km upstream of the much larger Pontsticill Reservoir. Lower Neuadd Reservoir had a […]

Tideway Central - Blackfriars Bridge Foreshore (2021)

The Tideway project is a new £3.8 billion, 25km long combined sewage storage and transfer system currently under construction in London. The project is divided into three design and build contracts: West, Central and East. The scope of works of the Central Section, the largest contract, includes 12.7km of 7.2m internal diameter tunnel and eight […]

Tideway Central - Falconbrook PS CSO Shaft (2021)

The Tideway project is a new £3.8 billion, 25km long combined sewage storage and transfer system currently under construction in London. The project is divided into three design and build contracts: West, Central and East. The scope of works of the Central Section, the largest portion of the project at over half its length, includes […]

Tideway Central - Main Tunnel Primary Lining (2021)

The Tideway Project is a 25km long combined sewage storage and transfer system along the River Thames in central London, UK. The project is split into three design and build contracts with the limits of each contract determined primarily by geology along the alignment. The contract for the Central Section, the longest and most challenging […]

Tideway Central - Main Tunnel Secondary Lining (2021)

In the heart of London, the largest project in the UK water industry is underway. Tideway is a new combined storage transfer system, commissioned to provide London’s sewage network with additional capacity and prevent pollution of the River Thames. The colossal scheme consists of a 25km TBM bored tunnel with numerous shafts, associated outfalls and […]

Tideway Central - Watertightness Testing (2021)

The Thames Tideway Project is a major infrastructure project that will intercept the existing London sewerage system through a series of tunnels running 25km from Acton in West London to Abbey Mills in East London. There are 22 vortex drop pipe structures and other near surface structures that will intercept existing spills into the Thames; […]

Huddersfield Energy & Recycling Facility (2020)

Huddersfield Energy and Recycling Facility (Huddersfield E&RF) is in Mirfield on Yorkshire Water’s Upper Brighouse site. The project involved the demolition of the existing incinerator and construction of a new mesophilic anaerobic digestion facility that will produce electricity; equivalent to powering 5280 homes once it is fully operational. The primary drivers for the scheme were: […]

Llyn Brenig Reservoir (2020)

Llyn Brenig impounding reservoir is located in the Denbigh Moors in North Wales. It was constructed in 1975 and was officially opened by the Prince of Wales. It forms part of the River Dee regulation to manage flow into the Dee via the Afon Alwen. The reservoir has a capacity of around 60 million cubic […]

Northumberland & Halfway SPS (2020)

Llanelli Wastewater Treatment Works (WwTW) in Llanelli, South Wales, serves the catchment’s 60,000 inhabitants and discharges treated effluent into the Loughor Estuary. The estuary is not only ecologically sensitive, but also a critical natural asset to the local community and to the wider South Wales region. It is a natural capital asset, home to commercial […]

Knostrop Sludge Treatment Facility (2019)

Over the last two decades the concept of municipal sewage being an expensive to treat waste stream has slowly become surpassed by renewable and sustainable opportunities that re-label wastewater treatment works as water resource recovery facilities (WRRF), sludge recycling centres (SRC) or sludge treatment facilities (STF) to name but a few. Incentivised by UK Government, […]

Tideway West - Hammersmith PS (2019)

The Hammersmith Pumping Station is one of Thames Water’s key sewerage assets in West London. Its catchment covers an area of around 19 square miles, receiving flows from 47 combined sewer overflows (CSOs). The pumping station discharges 51 times in a typical year releasing 2,210,000m3 of untreated sewage and an estimated 557 tonnes of sewage […]

Bristol Water Southern Strategic Support Main (2018)

The Southern Strategic Support Main (SSSM) comprises a 700mm diameter pipe line between Barrow WTW in south Bristol to Sandford, a distance of 19km, and a 600mm diameter pipe line between Cheddar WTW and Banwell a distance of 11km. The two pipelines connect at Sandford. The project commenced with a review of the outline proposal […]

Glascoed WTW (2018)

Welsh Water’s Glascoed Water Treatment Works (WTW) is situated south of the village of Bodelwyddan in the county of Denbighshire. It was commissioned in 1994, with additions made in 1995 and 2009. The works supplies up to 20 Ml/d to customers along the North Wales coast. The works receives its supply of raw water from […]

Knostrop Sludge Treatment Facility (2018)

The Yorkshire Water sewage sludge incinerator at Knostrop WwTW is approaching the end of its asset life in AMP7. This, along with high operating costs has driven a business need to review the long-term treatment of sludges in the Yorkshire/Leeds catchment. Following a strategy review, Yorkshire Water Services (YWS) decided to progress with conventional mesophilic […]

Newport East (Nash) Wind Turbine (2018)

Welsh Water is committed to reducing its carbon footprint and protecting the environment from the effects of climate change and is pursuing measures to generate more of its own power from renewable sources. Welsh Water recently signed a five-year contract with Dong Energy to supply green energy to power its sites, as well as introducing […]

Rivelin WTW - Sirofloc Replacement: Part 2 (2018)

Yorkshire Water Services (YWS) committed to the Drinking Water Inspectorate’s (DWI) compliance date of 31 December 2017 for beneficial completion of a new clarification process at Rivelin WTW. The £25m scheme required the design and construction of a large 82.5MLD buried treatment plant (80m long, 40m wide and 14m high) on the border of the […]

Bransholme Surface Water Pumping Station (2017)

Hull’s response to the 2007 flooding that affected thousands of homes in the Bransholme catchment is now complete and operational. This saw Yorkshire Water appoint Black & Veatch (now Binnies) to carry out a feasibility study followed by a design and build contract for a new pumping station. The new Bransholme Surface Water Pumping Station (SWPS), […]

Bynea Sewage Pumping Station (2017)

Dŵr Cymru Welsh Water (DCWW) is carrying out a strategic package of works in the Llanelli and Gowerton catchments with the aim of reducing spills into the Loughor Estuary. Bynea Sewage Pumping Station (SPS) is a key asset, receiving sewage flows from the local catchment and transferring them to Llanelli WwTW. The site originally operated […]

Cambrian RainScape (2017)

The Cambrian catchment has a population of 4,500 and is located in Llanelli, South Wales. The catchment is predominantly served by combined sewers with a combined sewer overflow (CSO) at Cambrian Sewage Pumping Station (SPS). The CSO discharges approximately 52 times per year (54,000m3 per year) into the Loughor Estuary, a designated Shellfish Water. The […]

DCWW Coastal Investigations Programme (2017)

In March 2015 Dŵr Cymru Welsh Water (DCWW) launched the biggest Welsh coastal investigation and modelling project ever undertaken to enhance its understanding of the factors affecting water quality at 49 sites (29 bathing waters and 20 shellfish waters) along the entire Welsh coastline. The evidence gathered from this study will allow DCWW to assess […]

Saltend WwTW (2017)

Yorkshire Water’s Saltend WwTW had a history of environmental under-performance which resulted in a significant number of customer complaints due to odour. Between September 2015 and May 2016, £18m of refurbishment and upgrade work was carried out on a fast track basis to improve this performance. Commercial arrangements were adjusted from normal framework conditions to […]

Swansea Bay WwTW Wind Turbine (2017)

Dŵr Cymru Welsh Water (DCWW) is investing in technologies to generate electricity on its sites in order to reduce their carbon footprint and the amount of imported energy. DCWW has already implemented technologies including solar photovoltaic panels, hydro turbines and gas-to-grid; however the new wind turbine at Swansea is their first wind generation site. Swansea […]

Tideway Central - Vessel Relocation (2017)

London’s sewerage system was designed by Sir Joseph Bazalgette in the 1850s, for a population of four million people. Whilst the Victorian sewers are still in excellent working condition, they are struggling to cope with the demands of the city’s growth. Every year, tens of millions of tonnes of raw sewage pour into the River […]

Leeds Flood Alleviation Scheme (2016)

Historically, Leeds has not benefited from formal flood defences and is sited in a catchment where the river can rise rapidly in response to rainfall. There are records of flooding dating from the 19th century and in the recent past; prior to the scheme commencing the river had come close to flooding Leeds city centre […]

Rivelin WTW - Sirofloc Replacement: Part 1 (2016)

Rivelin WTW provides drinking water for a population of approximately 200,000 in Sheffield. The raw water feeding the works is a blend of water from the Derwent Valley via Ladybower Reservoir and the local catchment via Rivelin Reservoir. The quality of the raw water has deteriorated in the period since the current plant was built […]

Upper Neuadd Dam Stability (2016)

Upper Neuadd Dam is a Grade II* listed structure, situated in the heart of the Brecon Beacons below Pen y Fan in the Taf Fechan valley, about 13km north of Merthyr Tydfil. It is owned and operated by Dŵr Cymru Welsh Water and is the upper dam in a cascade including Lower Neuadd and Pontsticill […]

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