Improvement programmes

Water companies, if required by the Inspectorate or with the agreement of the Inspectorate, can put in place programmes of remedial action to improve drinking water quality whenever these are necessary.

Programmes of work arise in four ways:

  • as a result of the process for setting price limits for a five year period (known as the price review process);
  • as a result of enforcement for contraventions of the drinking water standards for parameters in the regulations; and
  • as a result of enforcement for issues arising out of an assessment by the Inspectorate of a drinking water quality incident or technical audit;
  • following the identification of a risk to health through a risk assessment of a water supply system.

More detail is provided in the Guide to Improvement Programmes.

Radioactivity

The Secretary of State or Welsh Ministers may notify a water undertaker that, for specific water supply zones, a radioactive parameter need not be monitored, providing those parameters (Indicative Dose, Tritium, and Radon) are below the respective parametric values.

Radioactivity notices are issued to companies where sufficient risk assessment and sample analysis demonstrates a low risk. This is allowed under regulation 6(12) of the Water Supply (Water Quality) Regulations 2016 (as amended) and 6(14) of the Water Supply (Water Quality) Regulations (Wales) 2018.

Improvement Programmes and Radioactivity Notices by Company:

Affinity Water Limited

Albion Eco Limited

Albion Water Limited

Anglian Water Services Limited

Bristol Water Plc

Dwr Cymru Welsh Water

Hafren Dyfrdwy

Icosa Water Services Limited

Independent Water Networks Limited

Leep Networks (Water) Limited

Northumbrian Water Limited

Portsmouth Water Limited

Severn Trent Water Limited

South East Water Limited

South Staffordshire Water Plc (including Cambridge Water)

South West Water Limited (including Isles of Scilly)

Southern Water Services Limited

Sutton and East Surrey Water Plc (SES)

Thames Water Utilities Limited

United Utilities Water Limited

Veolia Water Projects Limited

Wessex Water Services Limited

Yorkshire Water Services Limited

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