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Mace Consult launched as a new and independent business on 5 March 2026, through a carve-out from Mace Group. Mace Consult and Mace Construct operate as two independent businesses. Information, references and materials on this website may represent operations prior to this separation. Go to Mace Construct here.

Affinity Water

Flushing the competition

Revolutionising water supply with innovative solutions

Affinity Water operative inspective large water pipe

Key takeaways

£450M

investment across five years

600

km of water mains

900M

litres of water maintained daily

  • The UK’s largest water-only supplier provides water to a population of 3.5 million every single day. 
  • Achieved significant cost savings and efficiency improvements through streamlined systems and a dedicated Project Management Office (PMO). 
  • Enhanced stakeholder engagement and customer satisfaction with proactive communication and minimal project disruptions.

Affinity Water is the single largest water-only supplier in the UK. The firm provides over 900 million litres of water, to a population of 3.5 million every single day. Our relationship with the company stretches back to 2005, when we managed its asset delivery programme. Today, this has evolved to a stage where Affinity Water's staff and our own function form one collaborative and integrated team. 

The £450m five year investment programme covers a vast range of work, including close supervision of capital investment projects. As a delivery partner, the stringent regulations and targets set by water regulator, Ofwat, and the Drinking Water Inspectorate are in the forefront of our mind. There is also a growing emphasis on stakeholder engagement, reducing costs and minimising disruption to customers – a specialist area for our world class team.

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Mace Consult and Mace Group are now two independent businesses.

In 2025, a majority investment in Mace Consult by Private Equity at Goldman Sachs Alternatives was announced through a demerger from Mace Group.

This completed on 5 March 2026, with Mace Consult and Mace Group (which includes Mace Construct) now independent businesses. To continue, please choose whether you want to explore Mace Consult or Mace Construct.