To reflect the serviceability status of water supply systems, this research developed improved water quality indicators to be used by Regulators and to extend the value of data already collected by Water Utilities. The research sponsors were the UK Drinking Water Inspectorate (DWI) and the Office of Water Services (OFWAT) and the work was undertaken by British Hydraulics Research (BHr) and WRc.
Indicators were identified which could be developed from existing data and which might inform judgements on asset serviceability. Data were then collected from water utilities and analysed using a range of statistical approaches to assess which measures would produce robust and meaningful measures of capital maintenance requirements.
The project recommendations were placed on the Ofwat and DWI websites in November 2001 for industry comment.
- Data and improved methodologies for the capital maintenance planning framework as part of the asset management planning cycle.
- Information to enable the industry to discuss future capital maintenance funding.