Cumming Group, in partnership with Black & Veatch and GL Industrial Services, was appointed by Thames Water and Ofwat to undertake an independent third-party expert review of the whole-life costs and benefits of mains replacement in London. 

The scope of the review included: 

• Assessment of the process, performance, and benefits delivered relative to whole-life costs 
• Identification of lessons learnt to inform planning for more effective and efficient delivery 
• Evaluation of the incremental costs and benefits of different mains rehabilitation options to improve the supply-demand balance beyond maintaining base service levels 

Our involvement provided an objective, expert perspective to support strategic decision-making and optimise the delivery of London’s mains replacement programme.