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Printer Friendly VersionSelected Information - Completed Research

CP022  Pipeline Rehabilitation & Replacement Water Distribution
Since 1995, distribution mains rehabilitation and whole life costing had been investigated in this project. This resulted in development of a powerful software product, Waterfowl© (WRc Analysis of Techniques for Effective Rehabilitation Financed Over Whole Life).

Using data imported from GIS systems, Waterfowl was used to calculate the ownership costs of groups of mains, allowing different selection and replacement policies to be compared. The whole life costs were assessed via key performance indicators such as leakage levels, burst frequencies, water quality and customer complaints. Complete areas, e.g. district meter areas, were considered with costs reported by pipe type (mains, supply pipe, communication pipe) and material. The project was funded by three UK water companies.

The impacts of a range of rehabilitation strategies were calculated for each group of pipes and the most appropriate strategies selected.

Benefits to Clients

Waterfowl provides benefits for:

  • Strategic planning and scheme level rehabilitation planning
  • Prioritisation of rehabilitation schemes
  • Technical selection and cost analysis of alternative options
  • Calculation of capital deferment periods to minimise whole life costs
  • Auditable and quantitative financial analysis.
WRc's Portfolio Programme
Summary of the £1.5 million per annum research programme

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