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Portsmouth Water has slipped from first to third for water supply, and Northumbrian from first to sixth for sewerage in the latest developer services league table.
Portsmouth Water scored 99.76 per cent for water supply, down from 100 per cent last quarter, and was beaten to the top spot by Southern Water (99.89 per cent) and Sutton and East Surrey Water (99.87 per cent).
Northumbrian Water scored 99.70 per cent for sewerage, compared with 100 per cent last quarter. Meanwhile, United Utilities topped the list with a score of 99.89 per cent, followed by Yorkshire Water (99.80 per cent) and Welsh Water (99.79 per cent).
Affinity Water come bottom for water supply services, with a score of 87.99 per cent – a deterioration on last quarter. For sewerage services Wessex Water performed worst, with a score of 98.11 per cent – a marginal decrease on last quarter.
Overall levels of service performance remained at 98 per cent for water supply and 99 per cent for sewerage for July to September 2016.
Water UK said that, amid growing stakeholder interest, the online system has now been adapted to provide actual volumes of activity, to provide users with a greater ability to analyse the data and compare individual companies’ performance.
“Although it is positive to see this improvement across individual metrics of performance, the water industry is committed to improving further from today’s results,” the representative group added. “As such, further changes to the reporting system are being reviewed in response to comments from a range of stakeholders.”
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