WRc’s Assess and Address have been awarded the framework for DŵrCymru Welsh Water’s Water Main Inspection & Survey Services.

A dedicated team at Welsh Water established more than 400 trunk discreet metered areas (TDMA’s) covering over 5000 km of network. Detailed analysis of both balance results and asset performance resulted in the need for a program of further field work to determine the origin of the unaccounted for loss; leakage, unallocated demand, illegal use etc.

WRc has supported Welsh Water since January 2016 by assessing Unaccounted For Water (UFW) on the upstream network by creating water balances for each TDMA and SR operated by Welsh Water. This includes detailed analysis of network meter uncertainties using WRc’s databank of meter testing research and expert knowledge. The WRc team of technical specialists also produced detailed recommendations for immediate interventions to help Welsh Water reduce leakage.

To aid the investigation Welsh Water had a requirement to undertake water main inspection and survey activities - following a rigorous procurement process, a Supply of Services Agreement has been awarded to WRc Assess and Address^®which will be supported by supply partner API.

Keith Walker, Head of Commercial Enterprise at WRc commented:

“Our first survey carried out under this framework located 2 Ml/d on a trunk main which was highlighted by our earlier desktop analysis of UFW as a good candidate for leak location - a great success for both analysis and field teams! We look forward to continuing to assist Welsh Water with prioritising and completing their Water Main Inspection and Survey activities.”