Water company claims information is not in the public interest despite widespread pollution of UK waters

• ‘It’s a national disgrace’: fury at sewage-filled Windermere over toxic algae and dead fish

One of the UK’s biggest water companies is fighting a legal battle to block public access to data on treated sewage it is discharging into Windermere in the Lake District.

United Utilities initially claimed that data from phosphorus monitors at sewage treatment works at the lake “was not environmental information”. It later claimed the information on phosphorus – which can pollute watercourses when at high levels – was “internal communication” and exempt from disclosure.