WSP provides holistic solutions as well as advisory and engineering services that focus on the full spectrum of water and wastewater management issues in the natural and built environment.  Employing methods and tools capable of assessing infrastructure system vulnerabilities, we help clients build more resilient water infrastructure, while minimising capital spend and managing risks associated with the impacts of socioeconomic factors and climate change. 

Infrastructure is needed to supply citizens, communities, businesses and industries with potable water; collect, treat and discharge wastewater and manage storm water runoff and prevent flooding. The effects of climate change is shown as cities and countries across the world are experiencing increasingly more frequent and severe occurrences of extreme weather conditions that have caused ocean, lake and river levels to increase, occasioned severe storms, floods and acute droughts, all of which threaten water sources and overtax and make water infrastructure more vulnerable.

Effective and resilient water infrastructure is critical to public and environmental health, and to economic sectors worldwide, from pharmaceutical to agricultural to service industries. Disruptions in or loss of water or wastewater services, decline in water quantity and quality brought about by inadequate systems or major water disasters caused by floods and pollution, as a result of under investment in water infrastructure management, pose risks to public health, economies and the environment.

Neglecting to earmark sufficient funds, deferring maintenance and not prioritising investment to develop, maintain, repair and replace water and wastewater infrastructure has led to severe ramifications in both developed and developing countries. The importance of managing water has never been more critical; from water contamination crises in Flint, Michigan, Walkerton, Ontario and Mutare, Zimbabwe, to inadequate sewage treatment plants to treat discharges to the Yamuna River in India, to nearly 30% of global water abstraction lost through leakage in water supply systems according to the United Nations World Water Development Report 2016.

Public agencies, utility owners and operators are trying to bridge the gap between current and future water supply demands, as well as finance the operating and capital costs to sustain, create water infrastructure and make it more resilient. Under increased and unprecedented pressure to do more with less and to find new means of paying for infrastructure, water owners and operators recognise that it is essential to understand and optimise the capacity of their assets.

WSP can respond through robust, innovative and appropriate long-term planning and engineering solutions, from the routine to the truly revolutionary, to help them adapt and meet current and future challenges.

WSP Can Help Stem the Strains on Water and Wastewater Infrastructure

Developing holistic and adaptable plans for the management and delivery of optimal and efficient water and wastewater infrastructure projects requires an understanding and knowledge of the natural and built environment, topography, resources, and socioeconomic and even political factors. This includes retrofitting existing infrastructure to ensure systems can cope with the forthcoming demands of climate change. 

WSP provides integrated water resources planning, design and engineering, and management to optimise solutions for water supply, alternative sources, storm water and wastewater management, and reuse of reclaimed wastewater. We also have experience in advanced water treatment technologies including desalination of seawater and brackish water and zero-effluent discharge systems for power facilities. 

Our water and wastewater infrastructure project experience spans planning, design, and construction management of large diameter pipelines, sewers, outfalls, water and force mains, separate and combined collection systems, pump and overpressure stations, flow control facilities, and special structures related to the storage, transmission and conveyance of raw water, potable water, waste water, storm water and reclaimed water. We also provide modelling, analysis, design and construction management services.

When standard processes do not exist and bespoke approaches are required, we develop innovative, client-focused, cost-effective, long-term solutions to help plan, invest and manage water infrastructure for the future. Our multidisciplinary team of engineers, scientists, economists/social scientists and project managers has worked closely with clients, including public and private sector companies, local authorities, governments and international organisations, to design the best infrastructure to fit their needs. 

WSP’s ongoing work as engineering consultant for the Water Conserv II project in Orange County, Florida, US is a case in point. When faced with a need to expand wastewater treatment service and a regulatory requirement to eliminate wastewater discharges to surface waters, the City of Orlando and Orange County formed a long-term partnership to develop an innovative water reclamation and reuse program, Water Conserv II. Turning a potential liability into a beneficial resource, Water Conserv II, the largest project in the world of this type, provides 125,000 m3/d (33 MGD) of reclaimed water for agricultural and residential irrigation, and aquifer recharge, while providing an environmentally sound and economically feasible regional solution to previously discharged wastewater effluent. For more than 25 years, WSP has been providing water resources services for planning, permitting, design, construction management, and operations and maintenance of the system. 

To improve the quality of a water course in Widnes, UK, United Utilities commissioned WSP to develop an underground 16,500 m3 detention tank to reduce discharge of storm sewage from combined sewer overflows. WSP developed a precast, rectangular, concrete tank of modular design measuring 135 m x 42.1 m x 3 m-high—a UK first for a large, storm detention tank. The approach that was taken not only gave the lowest whole-life cost with an initial capital savings of around £1 million, but also gave a shorter construction programme with less noise, dust, vibration and site traffic impacting the local community. The scheme was shortlisted in the Large Project category of the 2017 ICE North West Awards.

In Australia, WSP has been supporting Logan City Council through network planning, engineering design, environmental approvals and programme management on its Logan Water Infrastructure Alliance, one of the country’s largest water infrastructure delivery programmes, which delivers new and improved water, wastewater and recycled water infrastructure to support the growing population throughout the Logan District. This includes extending high standard water services to communities that have not previously had access to them. The project also involves installing sustainable infrastructure wherever possible to minimise lifecycle costs, greenhouse gas emissions, overflows, odours, and other environmental impacts.

WSP provided consulting services to Ontario’s Regional Municipality of Peel in Canada, on the design and construction of the $200 million Lorne Park Water Treatment Plant capacity expansion. As a result of strong growth in the regions, a review of the Water and Wastewater Servicing Master Plan (2005) concluded that the plant capacity must be increased from 347 ML/d to 500 ML/d. The retrofit combines traditional approaches with new technologies to achieve high levels of treatment and the expansion capacity to service population growth to 2031. Lorne Park received an ACEC Award in Excellence for merging existing and new technology while providing uninterrupted high quality drinking water to the region, among other awards.


Whether designing a new facility, modernising and rehabilitating existing structures and facilities, or extending piping networks, we support our clients from planning through to commissioning. We have extensive experience in the management and operation of water supply, wastewater collection and treatment and stormwater management. We work with networks that use simple technology through to more complex systems.

Providing Resilient and Sustainable Water Infrastructure Solutions to Anticipate the Unforeseeable

As business partners to our clients, we focus on delivering the tangible, technical solutions that make a real difference. We have the expertise to progressively and cost effectively reduce the environmental impact and resource intensity of projects around the world.

We offer advisory and engineering services for the full spectrum of water supply, wastewater management and stormwater management issues and employ methods and tools capable of assessing infrastructure system vulnerabilities and developing plans for facilities and structures that offer greater protection from the potential negative impacts of climate change.

With civil, hydraulic, electrical, mechanical, and process engineers, WSP’s expertise is global and applies to all environments and conditions, both urban and rural. Our water and wastewater infrastructure planning and engineering services include:

  • Masterplanning development for cities
  • Diagnostic studies on existing facilities
  • Conceptual and detailed design (civil, structural, mechanical, electrical)
  • Feasibility studies
  • Detailed design
  • Flood risk assessment
  • Life cycle analysis
  • Stakeholder consultation
  • Water and wastewater treatment
  • Hydraulic and hydrologic modelling
  • Hydraulic structure design
  • Climate adaptation and resiliency
  • Asset management
  • Pressure and leakage management
  • Water quality management
  • Smart data / online monitoring systems

The successful completion of water and wastewater infrastructure projects, at home and abroad, has enabled us to develop a thorough understanding of the intertwined socio-economic, institutional, legal, regulatory, and environmental contexts, at a local level. Our local engineers and experts team up with specialists who are recognised for their expertise and experience with complex technical conditions. This combines state-of-the-art and proven methodologies and tools with field-based knowledge, to ensure a successful result. This combination of experts, unique to each project, allows early identification of risks, enabling proactive project management.

Whether designing simple or complex systems, we pride ourselves on our technical innovation and our appetite for excellence on each and every project, large or small.