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Water Quality 85% open

Great Britain

What data is expected?

Data, measured at the water source, on the quality of water is essential for both the delivery of services and the prevention of diseases. The Index either looks at the quality of designated drinking water sources, or of environmental water sources (if drinking water data is not available). See our methodology for more information. In order to satisfy the minimum requirements for this category, data should be available on level of the following chemicals by water source.

  • Fecal coliform
  • Arsenic
  • Fluoride levels
  • Nitrates
  • Total Dissolved Solids
  • Data per water source
  • Available for entire country

How open is the data?

This submission needs careful consideration on review, as the scores exclusively refer to England's Water Quality Archive (only applying to English water quality). There are significant gaps in coverage. Although the release of EA's Water Quality Archive represents progress since last year, availability of open data on water quality in Great Britain remains generally poor and coverage far from complete. Background: The monitoring of water quality is divided in Great Britain. Rivers and other water bodies are monitored by the Environment Agency (England), Natural Resources Wales and the Scottish Environment Protection Agency. Public water supplies (this includes water from taps) are monitored by the Drinking Water Inspectorate (England and Wales) and the Drinking Water Quality Regulator for Scotland.

Only EA's water data is published in CSV format. Water quality reports for the entire British territory are only available as PDF. Data from Environment Agency's Water Quality Archive is re-usable under the Open Government Licence, as are the annual reports from the drinking water regulators. The most recent public data available from Environment Agency's Water Quality Archive is for 2015. Data can be downloaded at once, but only for English territory. Water quality reports are available at:

Data location - Water Quality Archive (Environment Agency) - Annual Reports (Drinking Water Inspectorate) - Annual Reports (Drinking Water Quality Regulator for Scotland)
Data licence
Data format   CSV
Reviewer   Danny Lämmerhirt
Submitters   Owen Boswarva
Last modified   Fri Dec 09 2016 04:49:13 GMT+0000 (UTC)



  • Danny Lämmerhirt


  • Owen Boswarva
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