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In addition to individual Members, we welcome applications from organisations working in and around the water sector. Click here to find out more information and how to become a Company Affiliate.


Saint-Gobain PAM UK

With a long and proud UK heritage, Saint-Gobain PAM UK, part of the worldwide Saint-Gobain Group, is the market leader in the supply of innovative ductile and cast iron products to the water, construction and utilities industries.  Products include:

  • Ductile iron water and sewer pipes, fittings, valves, couplings and adaptors
  • Ductile iron access covers and gratings
  • Cast iron soil and drainage and rainwater systems

Saint-Gobain PAM UK is committed to sustainable and ethical development in all aspects of their business. Made from greater than 80% recycled material and 100% recyclable at the end of their long life, both ductile and cast iron provide a cost effective solution whilst protecting the environment.


Selwood is the UK’s leading pump hire company and prides itself on setting the benchmark for exceptional customer service and product quality.

Selwood has strong and long-standing links with the water industry and six decades of experience in the hire, sales, design and manufacture of pumps which are in operation around the world.

The company’s dedicated specialist teams offer site surveys, bespoke solutions and genuine 24/7 support from a nationwide network of branches and are proud to deliver unrivalled expertise and exceptional service.

Shepherd and Wedderburn

Shepherd and Wedderburn is a leading UK law firm, with an uncompromising commitment to client service.  We are regarded by many as the go-to firm for specialist advice in the water, energy and utilities sectors. We act for regulators, water and sewerage companies and supply chain contractors throughout the UK and abroad. A full-service firm with over 500 staff, we have the capability to respond to almost any legal or regulatory issue in the water sector but are particularly renowned for our market leading regulatory expertise (including work with Open Water on retail market reform), and construction project credentials.

Stantec Treatment

MWH Treatment is now Stantec Treatment, the Stantec Community unities approximately 22,000 employees working in over 400 locations across 6 continents.

We collaborate across disciplines and industries to bring buildings, energy and resource, environmental, water and infrastructure projects to life. Our work; engineering, programme management, architecture, interior design, landscape architecture, surveying, environmental sciences, construction services, project management and project economics – from initial project concept and planning through to design construction, commissioning, maintenance, decommissioning and remediation – begins at the intersection of community, creativity and relationships.

Our local strength, knowledge and relationships, coupled with our world-class expertise, have allowed us to go anywhere to meet our clients’ needs in more creative and personalised ways. With long-term commitment to the people and places we serve, Stantec has the unique ability to connect to projects on a personal level and advance the quality of life in communities across the globe. 


Stonbury are specialist contractors to the water industry, holding framework agreements with 14 of the UK’s leading water companies. Their frameworks and specialist services include the repair, refurbishment and maintenance of clean and waste water retaining assets and associated structures.

Through extensive practical knowledge in civil engineering and high-performance repair of waterproofing and coating systems, Stonbury have established a reputation of high quality and standards for both new build and refurbishment schemes within the water industry.

Considered market leaders in their specialised area of contracting, Stonbury are fully committed to the principles of Health & Safety and Environmental Sustainability, fully registered as a supplier on UVDB Verify and have OHSAS 18001/2007 Health & Safety Management, ISO 9001/2008 Quality Management and ISO 14001/2004 Environmental Management.