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  • South East Water Limited – Tilford Meads Treatment Works Arsenic

    Notice under regulation 28(4) of the Water Supply (Water Quality) Regulations 2016 (as amended) Reference: SEW-2023-00003 Version Number: 4 Water undertaker as appointed under section 6 of the Water Industry Act 1991 (as amended): South East Water Limited, with registered number 02679874 (hereinafter called ‘the Company’). Assets Affected: Asset Name Reference Tilford Meads Treatment Works […]

    • Published 15:59:33 GMT 6 January 2025
  • Arsenic in the supply to a holiday cottage – technical support and advice

    This small supply serves 3 holiday cottages and one domestic dwelling was sampled under the previous 1991 regulations because of its use for commercial purposes. The source is a borehole and the well maintained supply is disinfected by means of a common ultraviolet (UV) system. Under the previous regulations samples were not analysed for arsenic […]

    • Ref: 2010/04
  • Annex A – Case studies

    The Inspectorate publishes a variety of case studies on private water supplies on its website. These cover a range of scenarios and subjects, which are largely derived from enquiries to the Inspectorate, either from local authorities or private water supply users. Some come from third parties, including lawyers, agencies, local councillors, and MPs. These case […]

    • Published 11:24:38 BST 9 May 2025
  • Deficiencies in proactive risk assessment on a regulation 9 supply

    Background In April 2024 the Inspectorate was invited to discuss water quality issues at a regulation 9 private water supply with members of the local authority, the UK Health Security Agency (UKHSA), and the local water company. In a residential area of the West Midlands, a complex of interwar apartments was being served by an […]

  • South West Water Limited – St Agnes Water Quality Improvements

    Notice under regulation 28(4) of the Water Supply (Water Quality) Regulations 2016 (as amended) Reference: ISC-2021-00006 Version Number: 6 Water undertaker as appointed under section 6 of the Water Industry Act 1991 (as amended): South West Water Limited, with registered number 02366665 (hereinafter called ‘the Company’). Assets Affected: Details of this Notice: Description of Risk […]

    • Published 11:29:57 BST 13 August 2024
  • Drinking Water Standards and Regulations

    What are the drinking water standards? Drinking water must be ‘wholesome’ and this is defined in law mainly by setting standards for a wide range of substances, organisms and properties of water in regulations. There is an additional requirement to make sure that it does not contain anything else that might be a potential danger […]

    • Published 12:42:43 GMT 13 January 2023
  • Likely sources of individual parameters
    • PWS Regulations
    • England
  • Information note on Regulation 7 (Wales)
    • PWS Regulations
    • Wales
  • Information note on Regulation 7
    • PWS Regulations
    • England
  • YKS (Yorkshire Water Services Ltd)

    Report Data Range: For the whole year 2021 Table 1: Quality of water leaving service treatment works – European Standards Table 2: Quality of water leaving service treatment works – National Standards Table 3: Quality of water leaving service treatment works – Additional Monitoring Requirements Table 4: Quality of water leaving service reservoirs – National […]

    • Published 12:24:42 BST 21 October 2022
  • WSX (Wessex Water Services Ltd)

    Report Data Range: For the whole year 2021 Table 1: Quality of water leaving service treatment works – European Standards Table 2: Quality of water leaving service treatment works – National Standards Table 3: Quality of water leaving service treatment works – Additional Monitoring Requirements Table 4: Quality of water leaving service reservoirs – National […]

    • Published 12:21:09 BST 21 October 2022
  • SRN (Southern Water Services Ltd)

    Report Data Range: For the whole year 2021 Table 1: Quality of water leaving service treatment works – European Standards Table 2: Quality of water leaving service treatment works – National Standards Table 3: Quality of water leaving service treatment works – Additional Monitoring Requirements Table 4: Quality of water leaving service reservoirs – National […]

    • Published 12:11:34 BST 21 October 2022
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