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We are a regional water and sewerage company serving 2.8 million customers across the south west of England.
View moreWe are recognised by our regulators as one of the leading water and sewerage companies in England and Wales.
View moreOur customers, the environment and our employees are at the heart of our business.
View moreWe set out our key priorities for the future, based on wide and continuous conversations with our customers and stakeholders.
View moreWe are putting our customers, communities and environment at the heart of what we do.
View more01.01.C - Young People's Panel
01.01.D - Willingness to pay research 1 - Accent
01.01.E - Willingness to pay research 2 - Accent
01.01.F - Willingness to pay research 3 - Populus
0101G Willingness to pay research 4 Populus PDF
01.01.H - Literature review on perception of local
01.01.I - Cognitive testing - Accent
01.01.J - Cognitive testing - Populus
01.01.O - Acceptability testing
01.01.P - Evaluation of priority services
01.01.Q - Stakeholder survey with advice agencies
01.01.R - Evidence from day to day engagement
01.01.S - Online panel surveys
01.01.T - Image tracking research
01.01.U - Customer magazine and Facebook chatbot surveys
01.01.V - Review of customer participation
01.01.W - Image tracker analysis
01.01.X - Developer services research
01.01.Y - Outcome delivery incentives
01.01.Z - PR14 engagement review
01.01.AA - People in vulnerable circumstances
03.01.A - Performance commitment detail
03.01.B - Bespoke performance commitment methodology (Ofwat pro forma)
03.01.C - Third party report on our PR19 performance commitments
03.02.A - Triangulation analysis spreadsheet
03.02.B - Third party report on triangulation methodology
03.03.A - Third party report on cost benefit analysis
03.04.A - Incentive rate analysis spreadsheet
03.04.B - Third party report on calculation of incentive rates
03.04.C - Sharing success - our proposals for sharing information with other companies
03.05.B - Third party report on analysis of RORE for outcome delivery incentives
05.01.A - Catchment Panel report on ambition and innovation
05.01.B - Meeting WISER and innovation
05.01.C - Atkins - Phosphorus removal - technology review
05.01.D - Chandler KBS - Phosphorus removal - financial review
05.01.E - APEM - Investigations - cost assurance
05.01.F - Alternative approaches to delivery of the WINEP
05.03.A - PR19 Drinking water quality submission to the DWI
05.03.A.01 - PR19 Drinking Water Quality Submission to DWI
05.03.A.02 - Annex 1 and 2 - Nitrate Schemes
05.03.A.03 - PR19 Catchment intervention to control nitrates
05.03.A.04 - WSX-Risk-T33081000 - Fonthill Bishop
05.03.A.05 - WSX-Risk-T33126200 - Sturminster Marshall
05.03.A.06 - WSX-Risk-Z44000101 - WQZ 101 - Shaftesbury
05.03.A.07 - WSX-Risk-Z44000092 - WQZ 92 - Shapwick
05.03.A.08 - Annex 3 - Lead Strategy
05.03.A.09 - Regulation 28 Submission - High risk lead zones
05.03.B - DWI letters of support
05.03.B.01 - Confirmation of DWI support PR19_WSX_Fonthill
05.03.B.02 - Confirmation of DWI support PR19_WSX_Shapwick_Sturminster_Marshall
05.03.B.03 - Confirmation of DWI support PR19 WSX_Lead strategy
05.03.C - Long Term Planning for drinking water quality
05.03.D - DWI statement for the Wessex Water Partnership
05.09.A - Third party report - Chandler KBS (2.25mb) 05.09.B - Third party report - MWH
05.09.C - Third party report - Mott MacDonald (169kb) 05.09.D - Water network plus MEAV methodology
08.01.A - Economic Insight report on input cost and frontier shift assumptions
08.02.A - Wholesale cost models
08.02.B - Further commentary on efficient costs
08.03.A - Economic Insight report on household retail cost assessment for PR19
08.03.B - Peer review of residential retail cost assessment
08.03.C - Response to Ofwat cost assessment consultation May 2018
08.03.D - Economic Insight report on retail household IPP analysis and evidence
08.03.E - Economic Insight report on household retail margins at PR19
08.05.A - Claim WSX01 - North Bristol sewerage strategy
08.06.A - Claim WSX02 - Sewage treatment works capacity programme
08.07.A - Claim WSX03 - Number of non-infrastructure water supply assets
08.08.A - Claim WSX04 - Reducing leakage by a further 15%
08.09.A - Claim WSX05 - Flooding programme
08.10.A - Claim WSX06 - Pollution reduction strategy
08.11.A - Chandler KBS report on P removal programme cost
08.11.B - Chandler KBS report on non-construction cost benchmarks
Appendix 1 - Completed action template
Appendix 2 - Commentary on data tables that have changed
Appendix 3 - Updated Performance Commitment detail document (update from business plan)
Appendix 4 - Protecting and enhancing the environment - Response to IAP
Appendix 5 - Using water efficiently - Response to IAP
Appendix 6 - Providing excellent drinking water quality - Response to IAP
Appendix 7 - Minimising sewer flooding - Response to IAP
Appendix 8 - Bioresources - Response to IAP
Appendix 9 - Maintaining our services - Response to IAP
Appendix 10 - Accommodating growth and new development - Response to IAP
Appendix 11 - Water resources bid assessment framework - Response to IAP
Appendix 12 - Securing long-term resilience - Response to IAP
Appendix 13 - Enhancement opex - Report from Reckon LLP
Appendix 14 - The link between leakage and bursts
Appendix 15 - Mott MacDonald assurance report
Appendix 16 - A review of Ofwat's PR19 approach to estimating frontier shift - Report from First Economics
Appendix 17 - Board assurance statement (tracked changes)
Appendix 18 - Additional support for kilometres of river improved (non-WINEP)
Appendix 19 - The link between customer research and performance commitment targets
Appendix 20 - Ensuring consistency in key PR19 parameters - Report from Economic Insight
Appendix 21 - Customer research on ERI - Report from Blue Marble
Appendix 22 - Customer research on ODI range - Report from Turquoise