DWI slams Yorkshire Water over disease outbreak

Yorkshire Water has been severely criticised by the Drinking Water Inspectorate (DWI) over procedures at a water treatment works implicated in a cryptosporidiosis outbreak on North Humberside three years ago.1 The report also provides powerful arguments for the DWI to be given stronger enforcement powers.

The outbreak began in December 1989 and continued for several weeks, producing 477 verified cases. Epidemiological evidence linked it to water from Yorkshire Water's Barmby treatment works, where slow sand filters had been by-passed in order to boost supplies.

After a two-year investigation, the DWI concluded that evidence against the company was "not sufficient to form the basis of a successful prosecution" (ENDS Report 210, pp 26-27

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