Drinking Water 2011

A report by the Chief Inspector of drinking water

This report is in PDF format. The Adobe® Acrobat Reader® can be freely downloaded here.

The Drinking Water Inspectorate annual report 'Drinking water 2011' provides an overview of the quality of public and private water supplies in England and Wales. It comprises of the following:

Chief Inspector's Letter to Ministers (for England and Wales)

The letters from the Chief Inspector to the Ministers in England and in Wales contain a high level overview of findings for the year.

Letter to Minister - England (PDF 214KB)
Letter to Minister - Wales (PDF 273KB)

Public water supplies - regional reports

The regional reports cover four regions of England and additionally Wales and summarise the testing and results of water quality tests, events and technical audit activity in the region.

Central and Eastern region (PDF 3.52MB)
London and South East region (PDF 2.93MB)
Northern region (PDF 2.98MB)
Western Region (PDF 2.15MB)
Wales (in English)  (PDF 2.85MB)
Wales (in Welsh)  (PDF 2.85MB)

Private water supplies

Presented as separate reports for England and Wales and publishing numbers and types of supplies, a summary of monitoring results and case studies.

England (PDF 4.44MB)
Wales (PDF 3.08MB)

Company data look up tables

Albion Water Company (PDF 400KB)
Anglian Water Services Limited (PDF 497KB)
Bristol Water Plc (PDF 505KB)
Cambridge Water Company (PDF 426KB)
Cholderton and District Water Company Limited (PDF 365KB)
Dee Valley Water Plc (PDF 486KB)
Dŵr Cymru Welsh Water (PDF 701KB)
Essex and Suffolk Water Plc (PDF 496KB)
Hartlepool Water Plc (PDF 365KB)
Independent Water Networks Ltd (PDF 327KB)
Northumbrian Water Limited (PDF 423KB)
Peel Water Networks (PDF 290KB)
Portsmouth Water Plc  (PDF 368KB)
Scottish and Southern Energy (PDF 404KB)
Semcorp Bournemouth Water (PDF 448KB)
Severn Trent Water Limited (PDF 845KB)
South East Water Plc  (PDF 384KB)
South Staffordshire Water Plc (PDF 387KB)
South West Water Limited  (PDF 468KB)
Southern Water Limited  (PDF 479KB)
Sutton and East Surrey Water Plc  (PDF 408KB)
Thames Water Utilities Limited  (PDF 507KB)
United Utilities Water Plc  (PDF 512KB)
Veolia Water Central  (PDF 387KB)
Veolia Water East (PDF 326KB)
Veolia Water Projects (PDF 361KB)
Veolia Water Southeast (PDF 343KB)
Wessex Water Services Limited (PDF 375KB)
Yorkshire Water Services Limited  (PDF 679KB)

Significant drinking water quality events in 2011 (PDF 732KB)

Prosecution and Cautions (PDF 157KB)


Page reviewed: 12 July 2012
Page modified: 12 July 2012

Drinking Water Inspectorate