Previous plans
Learn about our past proposals to ensure a reliable water supply for our customers in the future. You can also view our new Water resources management plan (WRMP24).
Revised Draft WRMP 24
We published our revised draft plan in August 2023 which updated our draft plan, published December 2022, to reflect feedback from our consultation and incorporate new requirements from our regulators.
Technical report
- Section 1 Introduction And Backgroundpdf | 1.7 MB
- Section 2 Environmentpdf | 1.5 MB
- Section 3 Demand Forecastpdf | 4.5 MB
- Section 4 Current And Future Water Supplypdf | 2.1 MB
- Section 5 Environmental Forecastpdf | 784.7 KB
- Section 6 Uncertainty And Baseline Supply Demand Balancepdf | 3.5 MB
- Section 7 Resource Optionspdf | 1.3 MB
- Section 8 Demand Reduction Optionspdf | 1.4 MB
- Section 9 Environmental And Social Assessmentpdf | 860.2 KB
- Section 10 Programme Appraisalpdf | 2.5 MB
- Section 11 The Overall Best Value Planpdf | 2 MB
Technical appendices
- A - Water resource zone integritypdf | 1.1 MB
- B - Strategic environmental assessmentpdf | 5.4 MB
- C - Habitats regulation assessmentpdf | 2.4 MB
- D - Water framework directive assessmentpdf | 1.5 MB
- E - Population and property projectionspdf | 6.2 MB
- F - Household water demand forecastpdf | 2.7 MB
- G - Non-household demand forecastpdf | 14.4 MB
- H - Dry year and critical period forecastingpdf | 443.4 KB
- I - Deployable outputpdf | 1.2 MB
- J - Outagepdf | 354.2 KB
- K - Treatment capability and process lossespdf | 440.4 KB
- M - Leakagepdf | 469.7 KB
- N - Meteringpdf | 360.6 KB
- O Water Efficiencypdf | 1 MB
- P - Options listpdf | 862.7 KB
- Q - Scheme rejection registerpdf | 1.1 MB
- R Scheme Dossierspdf | 7.2 MB
- S - Stakeholder engagementpdf | 1.5 MB
- T - Customer priorities and preferencespdf | 2.9 MB
- U - Climate changepdf | 1.4 MB
- W - Programme appraisal methodspdf | 794.7 KB
- X - Programme appraisal outputspdf | 28 MB
- Y - WRMP and DWMP alignmentpdf | 586 KB
- Z - Defra directions checklistpdf | 236.2 KB
- AA - Natural capital and biodiversity net gain assessmentpdf | 2.6 MB
- BB - Invasive and non-native species risk assessmentpdf | 1.4 MB
- CC - Lessons from 2022 droughtpdf | 1.4 MB
Please note there are no appendix L or V.
Glossary
Supporting documents
- Demand management options - Screening reportpdf | 1.3 MB
- Demand management options - Feasible options reportpdf | 711 KB
- Feasibility report addendum - Desalinationpdf | 461.6 KB
- Feasibility report addendum - Reservoirpdf | 1.3 MB
- Feasibility report addendum - Direct river abstractionpdf | 531.9 KB
- Feasibility report addendum - Water recyclingpdf | 3.8 MB
- Feasibility report addendum - Raw water transferpdf | 734 KB
- Feasibility report addendum - Inter-zonal water transferspdf | 467.4 KB
- Feasibility report addendum - Groundwaterpdf | 659.4 KB
- Options metrics overviewpdf | 441.7 KB
- Security and commercial letterpdf | 94.1 KB
Draft WRMP24
We published our draft WRMP24 for consultation between 13 December 2022 and 21 March 2023.
Technical report
- Section 1 - Introduction and Backgroundpdf | 1.3 MB
- Section 2 - Environmentpdf | 1012.4 KB
- Section 3 - Demand Forecastpdf | 4.6 MB
- Section 4 - Supply Forecastpdf | 1.7 MB
- Section 5 - Environmental Forecastpdf | 726.8 KB
- Section 6 - Uncertainty and Baseline Supply Demand Balancepdf | 4.3 MB
- Section 7 - Resource Optionspdf | 1.1 MB
- Section 8 - Demand Optionspdf | 1.5 MB
- Section 9 - Environmental Assessmentpdf | 997.7 KB
- Section 10 - Programme Appraisal and Scenario Testingpdf | 1.5 MB
- Section 11 - The Overall Best Value Planpdf | 1.3 MB
Technical appendices
- A - Water Resource Zone Integritypdf | 1.2 MB
- AA - Natural Capital and Biodiversity Net Gain Assessmentpdf | 1.2 MB
- B - Strategic Environmental Assessmentpdf | 5.8 MB
- BB - Invasive and Non-native Species Risk Assessmentpdf | 610.4 KB
- C - Habitat Regulation Assessmentpdf | 1.4 MB
- D - Water Framework Directivepdf | 893.9 KB
- E - Population and Property Projectionspdf | 3.6 MB
- F - Household Water Demand Forecastpdf | 2.9 MB
- G - Non-Household Water Demand Forecastpdf | 9.1 MB
- H - Dry Year and Critical Period Forecastingpdf | 489.2 KB
- I - Deployable Outputpdf | 1.3 MB
- J - Outagepdf | 342.4 KB
- K - Treatment Capability and Process Lossespdf | 421.6 KB
- M - Leakagepdf | 525.4 KB
- N - Meteringpdf | 451.8 KB
- O - Water Efficiencypdf | 980.4 KB
- P - Options Listpdf | 1.2 MB
- Q - Scheme Rejection Registerpdf | 1 MB
- R - Scheme Dossierspdf | 5.4 MB
- S - Stakeholder Engagementpdf | 837.3 KB
- T - Customer Priorities and Preferencespdf | 2 MB
- U - Climate Changepdf | 1.5 MB
- W - Programme Appraisal Methodspdf | 650.3 KB
- X - Programme Appraisal Outputspdf | 8.8 MB
- Y - Alignment (DWMP and WRMP)pdf | 573.1 KB
- Z - Defra Directions Checklistpdf | 301.1 KB
- Glossarypdf | 447.4 KB
Supporting documents
- Addendum Report - Desalinationpdf | 482.4 KB
- Addendum Report - Direct River Abstractionpdf | 648.1 KB
- Addendum Report - Groundwaterpdf | 974.3 KB
- Addendum Report - Inter-Zonal Water Transferpdf | 514.3 KB
- Addendum Report - Raw Water Transferpdf | 875.3 KB
- Addendum Report - Reservoirspdf | 1.1 MB
- Addendum Report - Water Reusepdf | 720.8 KB
- Demand Management Options - Feasible Options Reportpdf | 894.6 KB
- Demand Management Options Screening Reportpdf | 4.3 MB
- Metrics Tablepdf | 56.8 KB
Our current Water Resources Management Plan (WRMP19)
In April 2020, following approval from the government, we published our Water Resources Management Plan 2019 (WRMP19) which sets out how we planned to provide a secure and sustainable water supply for the 80-year period from 2020 to 2100.
WRMP19 - An overview
Technical report
This is made up of 12 sections and provides detailed information on each topic.
- Section 0 - Executive Summarypdf | 2.3 MB
- Section 1 - Introduction and Backgroundpdf | 911.2 KB
- Water Resources Programme 2015-2020pdf | 454 KB
- Section 3 - Current and Future Demand for Waterpdf | 4.4 MB
- Section 4 - Current and Future Water Supplypdf | 1.4 MB
- Section 5 - Allowing for Risk and Uncertaintypdf | 1.1 MB
- Section 6 - Baseline Supply Demand Positionpdf | 1 MB
- Section 7 - Appraisal of Resource Optionspdf | 1.4 MB
- Section 8 - Appraisal of Demand Optionspdf | 1.5 MB
- Section 9 - Assessment of Environmental and Social Effectspdf | 1.3 MB
- Section 10 - Programme Appraisal and Scenario Testingpdf | 4.4 MB
- Section 11 - Preferred Programmepdf | 2.2 MB
Technical appendices
The appendices provide detailed technical information.
A. Data tables – These are detailed data spreadsheets produced for each of our six water resource zones,if you'd like copies of these please email us.
Technical appendices
- B. Strategic environmental assessmentpdf | 3.4 MB
- C. Habitats regulation assessmentpdf | 2.6 MB
- D. Water resource zone integritypdf | 892.4 KB
- E. Population and property projectionspdf | 3.6 MB
- F. Household water demand modellingpdf | 2.7 MB
- G. Non-household water demandpdf | 953.7 KB
- H. Dry year and critical period forecastingpdf | 402.7 KB
- I. Deployable outputpdf | 2.5 MB
- J. Outagepdf | 503.1 KB
- K. Process lossespdf | 320.1 KB
- L. Water reusepdf | 1.6 MB
- M. Leakagepdf | 372 KB
- N. Meteringpdf | 1.6 MB
- O. Water efficiencypdf | 2 MB
- P. Options listpdf | 791.5 KB
- Q. Scheme rejection registerpdf | 905.5 KB
- R. Scheme dossierspdf | 4.7 MB
- S. Stakeholder engagementpdf | 1.1 MB
- T. Customer priorities and preferencespdf | 3.1 MB
- U. Climate changepdf | 1.4 MB
- V. Risk and uncertaintypdf | 1.5 MB
- W. Programme appraisal methodspdf | 4.4 MB
- X. Programme appraisal outputspdf | 3.2 MB
- XX. Programme of further studies 2019-2022pdf | 1.1 MB
- Y. Final report of the Thames Water expert panelpdf | 205.6 KB
- Z. Defra directions and Environmental Agency water company checklistpdf | 879.9 KB
- AA. Glossarypdf | 278.9 KB
- BB. Water framework directive assessmentpdf | 3.5 MB
Environmental report
The statement describes how environmental and social aspects have been taken into consideration in developing our plan.
Feedback to the consultations on the draft and revised draft WRMP19
In February 2018 we held a public consultation on our draft WRMP19 and received over 540 responses, as well as feedback from customers. The statement of response No 1 sets out our consideration of the feedback and changes we had made to our draft plan.
- Statement of response No 1 main report. The appendices are available on request.
In Autumn 2018 we ran a further public consultation providing an opportunity to comment on the changes we had made to our draft Plan. We received over 750 responses. The statement of response No 2 explains our consideration of the feedback and changes we had made to our revised draft Plan in response to feedback, and new information.
- Statement of response No 2 main report. The Appendices are available on request.
Further information requested by the Secretary of State for the Environment, Food and Rural Affairs
In October 2019 the Secretary of State for the Environment Food and Rural Affairs requested further information in relation our plan, we responded in December 2019 and have incorporated this information into our plan. The letter received from the Secretary of State, and our response are available to download.