Drinking Water Reservoir Failures

Francis Bernstein made this Freedom of Information request to Drinking Water Inspectorate

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Francis Bernstein

Dear Drinking Water Inspectorate,

In the report “Drinking water 2011", July 2012 A report by the Chief Inspector of Drinking Water, it was noted that during investigations of single failures then the Crystal Palace reservoir was identified.

Please can details of failures of the Crystal Palace reservoir (South London) be provided that your organisation is aware of.

Yours faithfully,

Francis Bernstein

DWI Enquiries (DWI), Drinking Water Inspectorate

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DWI Enquiries (DWI), Drinking Water Inspectorate

Dear Francis Bernstein


Thank you for your enquiry dated 8th March requesting details of failures at the Crystal Palace reservoir. Your request is being dealt with as a routine enquiry.

According to our records from 2004 to the end of 2014, (which totals 5,666 tests) there has only been one failure at the Crystal Palace reservoir, which, as you have noted, was mentioned in our Annual Report of 2011 (published July 2012).

Service reservoirs have sample taps attached to them allowing companies to take a sample which is required to be representative of water in supply. On this occasion the company was using an alternative sample point which was thought to have been the cause of the failure. The sample was not representative of water being received by consumers; this was confirmed by samples taken from the reservoir itself and properties supplied by the reservoir.

Full information on drinking water quality is available each year in our Annual report which can be downloaded from our website at: http://dwi.defra.gov.uk/about/annual-rep... . Our next report for 2014 is due to be published July 2015

Yours sincerely

Judith Bibaud
Drinking Water Inspectorate
Area 7E, 9 Millbank
c/o Nobel House
17 Smith Square

Tel: 0300 068 6400

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