South West Water Limited is the licenced company for South West Water, Isles of Scilly, Bournemouth Water and Bristol Water supply areas.
Notices
Regulation 28(4) notice to mitigate risks associated with discolouration at Restormel Water Treatment Works. Completion Date: 30 June 2026.
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Regulation 28(4) notice to mitigate risks associated with discolouration at St Cleer Water Treatment Works. Completion date: 31 October 2026.
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Regulation 28(4) notice to mitigate risks associated with discolouration. Completion date: 31 January 2026.
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Regulation 28(4) notice for various parameters at Littlehempston works. Completion date: 31 October 2026.
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Regulation 28(4) notice for various parameters at the company’s water treatment works. Completion date: 30 April 2028.
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Regulation 28(4) notice for various parameters at Alderney Water Treatment Works. Completion date: One month after the current treatment process arrangement is no longer in supply.
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Regulation 28(4) notice for various parameters at Knapp Mill Water Treatment Works. Completion date: One month after the current treatment process arrangement is no longer in supply.
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Regulation 28(4) notice for various parameters at the company’s service reservoirs and treated water tanks. Completion Date 31 January 2027.
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Regulation 28(4) notice for various parameters at Alderney Water Treatment Works. Completion date: 30 April 2027.
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Regulation 28(4) notice for various parameters at Prewley works. Completion date: 31 May 2026.
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Regulation 28(4) notice for various parameters at Knapp Mill works. Completion date: 30 April 2027.
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Regulation 28(4) notice for various parameters at Lanner Service Reservoir. Completion date: TBC.
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Regulation 28(4) notice for various parameters at Bratton Fleming WTW. Completion date: 30 April 2030.
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Regulation 28(4) notice for various parameters at Allers WTW. Completion date: 30 April 2028.
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Regulation 28(4) notice for risks associated with discolouration parameters at Pynes Water Treatment Works. Completion date: 30 April 2028.
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Regulation 28(4) notice for risks associated with taste and odour at Lowermoor Water Treatment Works. Completion date: 30 April 2031.
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Regulation 28(4) notice for risks associated with discolouration parameters at Woodgreen Water Treatment Works. Completion date: 30 April 2029.
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Regulation 28(4) notice for risks associated with disinfection at Greatwell Water Treatment Works. Completion date: 31 May 2029.
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Regulation 28(4) notice for risks associated with discolouration at Dotton Water Treatment Works. Completion date: 31 May 2029.
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Regulation 28(4) notice for risks associated with taste and odour at various sites. Completion date: 31 May 2028.
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A regulation 28(4) notice for risks associated with treated water storage tanks. Completion date: 30 April 2030.
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A regulation 28(4) notice for risks associated with water quality, monitoring and control. Completion date: 30 September 2028.
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A regulation 28(4) notice for risks associated with water quality, monitoring and control. Completion date: 30 September 2027.
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A regulation 28(4) notice for risks associated with water quality, monitoring and control. Completion date: 30 June 2029.
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A regulation 28(4) notice for risks associated with discolouration of drinking water supplies. Completion date: 30 April 2036.
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A regulation 28(4) notice for risks associated with discolouration of drinking water supplies. Completion date: 28 February 2027.
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A regulation 28(4) notice for risks associated with various parameters at Allers Water Treatment Works. Completion date: 30 April 2027.
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A regulation 28(4) notice for risks associated with various parameters at Pitt New Service Reservoir A. Completion date: 31 July 2029.
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A regulation 28(4) notice for risks associated with various parameters at Northcombe Water Treatment Works. Completion date: 30 April 2027.
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A regulation 28(4) notice for risks associated with discolouration within the Restormel Newquay Supply Zone. Completion date: 31 October 2026.
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Bristol Water (South West Water Ltd) Notices*
*On 01 February 2023, Ofwat varied the licence of South West Water Ltd to include the Bristol Water area. Consequently, Bristol Water Plc’s licence was revoked. These improvement programmes represent work being undertaken by South West Water Ltd in the former Bristol Water supply area.
Regulation 28(4) notice for discolouration in various supply zones. Completion date: 30 April 2026
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Regulation 28(4) notice for various parameters at Stowey Water Treatment Works. Completion date: 30 April 2030.
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Regulation 28(4) notice for various parameters at Cheddar Water Treatment Works. Completion date: 30 April 2030.
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Regulation 28(4) notice for secondary chlorination at various locations listed within Annex 1 of the notice. Completion date: 31 January 2031.
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Regulation 28(4) notice for various parameters at Littleton WTW. Completion date: 30 April 2034.
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Isles of Scilly (South West Water Ltd) Notices**
** Water supplies on the Isles of Scilly became public supplies on 01 April 2020. South West Water Ltd has the operating licence for these supplies. These improvement programmes represent work being undertaken by South West Water Ltd to secure wholesome public water supplies on the Islands.
Regulation 28(4) notice for various parameters for the St Agnes water supply system. Completion date: 30 April 2026.
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Regulation 28(4) notice for various parameters for the St Martins water supply system. Completion date: 30 April 2025.
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Regulation 28(4) notice for various parameters for the St Marys water supply system. Completion date: 30 April 2026
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Regulation 28(4) notice for various parameters for the Tresco water supply system. Completion date: 31 October 2025
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Regulation 28(4) notice for various parameters for the Bryher water supply system. Completion date: 31 October 2025.
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Undertakings
Section 19(1)(b) Undertaking for risks associated with lead. Completion date 30 April 2031.
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Section 19(1)(b) Undertaking for risks associated with PFAS. Completion date 30 April 2031.
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Radioactivity
Radioactivity monitoring exemption notice for indicative dose, radon, and tritium. Expiry date: 31 December 2026.
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Radioactivity monitoring exemption notice for indicative dose, radon, and tritium. Expiry date: 31 December 2026.
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