A report by the Chief Inspector of drinking water

The Drinking Water Inspectorate annual report Drinking water 2018 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 – Wales

Public water supplies

Annual Summary reports

Quarterly reports published

Quarter 1: January – March 2018

Quarter 2: April – June 2018

Quarter 4: See full summary reports above.

CRI and ERI

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

Wales

Drinking water quality events in 2018

Top 50 ERI scoring events

All other events

Company data

Company name

Sample Results

Company statistics and company performance data

Affinity Water

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Download (PDF 65KB)

Albion Water

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Download (PDF 20KB)

Albion Eco

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Download (PDF 20KB)

Anglian Water

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Download (PDF 20KB)

Bournemouth Water

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Download (PDF 20KB)

Bristol Water

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Download (PDF 20KB)

Cambridge Water

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Cholderton and District Water

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Download (PDF 57KB)

Dee Valley Water

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Download (PDF 200KB)

Dŵr Cymru Welsh Water

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Download (PDF 54KB)

Essex and Suffolk Water

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Hafren Dyfrdwy

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Icosa Water

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Independent Water Networks

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Leep Water Utilities

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Northumbrian Water

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Portsmouth Water

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Severn Trent Water

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South East Water

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South Staffordshire Water

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South West Water

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Southern Water

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SSE Water

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SES Water

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Thames Water

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United Utilities

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Veolia Water Projects

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Wessex Water

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Download (PDF 20KB)

Yorkshire Water

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