Our Library of Research outcome reports

Our published Reports can be accessed below.
All Reports can be accessed free of charge by our members. Reports can be purchased by non-members however a selection are also free to access for non-members.

If you are a Water Company member, please login to the site using the "My UKWIR" button at the top of the screen to access downloadable reports. Water Company members may also access other online tools, such as the Toxicity Datasheets, National Mains Failure database, SAGIS, Wagrico, etc. all provided through our website.  You may need to request access from your company's representative, who can also be found under the relevant website tool.

Reports are listed by date published, in descending order.  You can run your own search and then filter the list by using the tools on the left hand side. Your search term will be highlighted in the results. If you cannot see your search term highlighted in a result then the term has been found in the body of the report.

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Climate Change
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Available Reports: 810

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Published 30/03/2021

Assessing the effectiveness of the regulatory framework (21/RG/05/56)

Frontier Economics was commissioned by UKWIR to identify the priorities of its members for future improvements to economic regulation, and to define scopes of work for future projects to explore these further. To achieve these objectives, Frontier Economics held  interviews with individual water companies to identify their strategic priorities for the future, hosted workshops with all water companies to discuss options and ran a discussion forum with water companies and stakeholders.

Drawing on these discussions, Frontier Economics developed the following scopes of work for future deep dive projects. 

  • How could the regulatory framework better reflect and incentivise long-term investment?
  • How should customers’ and stakeholders’ views be used in regulatory decisions?
  • How can the assessment of risk and reward be enhanced to better articulate the actual risks borne by companies and the calculations be made more consistent across the industry?

This report details these discussions and presents the deep dive scopes.

ISBN: 978-1-84057-914-7

Published 08/03/2021

Environmental Assessments for Water Resources Planning (21/WR/02/15)

There have been some significant developments in relation to environmental assessment of WRMPs and drought plans since UKWIR published guidance for practitioners in 2012. Ricardo have undertaken a review and update of the 2012 Guidance, including updated guidance on SEA and HRA as well as new guidance covering WFD compliance assessments and ecosystem services and natural capital accounting. The guidance relates to regional water resource plans as well as individual water company plans.

The updated guidance facilitates a smooth and efficient process of proportionate environmental assessment that supports decision making and consistency with relevant legislation.

ISBN: 978-1-84057-913-0

Published 23/02/2021

UKWIR’s Source Apportionment GIS Model (SAGIS): Version 4.0 (21/WW/02/13)

This project has delivered an upgraded and enhanced version of SAGIS that will enable its continued use for investment planning, river basin management and novel research applications into the foreseeable future. The legacy VBA code has been migrated to the Python and C# programming languages and the host GIS platform upgraded from ArcMap 10.2 to ArcGIS Pro 2.3. The potential risks arising from the deprecation of VBA from the ArcMap platform have been removed. The code has also been transitioned into a formal professional software development environment following a standardised development approach, with key functional elements developed as modular components. Geoprocessing logging available in ArcGIS Pro provides modellers with direct information on the status of data processing tasks and support with process failure diagnosis. The new version represents a substantial and unprecedented technological leap and opens up the possibility of new and previously unconsidered development applications.

This report is sold together with previous SAGIS reports;

  • 20/WW/02/12 Modelling a Dynamic and Uncertain Future – Preparing SAGIS for Changes in Climate, PR24, RBMP Cycle 3 and Brexit.
  • 20/WW/02/11, UKWIR’s Source Apportionment GIS Model (SAGIS): Research, Planning and Management. ISBN 978 1 84057 887 4
  • 19/WW/02/10, UKWIR’s Source Apportionment GIS Model (SAGIS): Version 3.0. ISBN 978 1 84057 866 9
  • 10/WW/02/2, Chemical Source Apportionment under the Water Framework Directive – Model Scoping Document. ISBN 1 84057 575 1
  • 12/WW/02/3, Chemical Source Apportionment under the Water Framework Directive. ISBN 1 84057 637 5
  • 14/WW/02/8, Extending and Updating UKWIR's Pollution Source Apportionment Tool. ISBN 1 84057 732 0
  • 18/WW/02/9, Extending and Updating UKWIR's Pollution Source Apportionment Tool (2). ISBN 1 84057 855 6
  • 13-WW-02-4, WFD Requirements for Lakes, Transitional and Coastal Waters: Source Apportionment for Nutrients and Priority Chemicals. ISBN 1 84057 743 6

If you have already purchased the previous SAGIS reports, please contact cham@ukwir.org.uk to buy this upgrade at a reduced price of £100.

ISBN: 978-1-84057-912-3

Published 30/01/2021

When is ‘surface water removal’ the most cost beneficial solution? (20/SW/01/20)

Managing and removing surface water from sewers offers a number of operational benefits. Using different types of sustainable interventions can create substantial wider community benefits.

There is an increasing appetite across the industry to consider and deliver such interventions to help manage a range of drivers. However, this appetite is not matched by an in depth understanding of the factors that make surface water removal options more cost beneficial than traditional engineering solutions.

This UKWIR project led by Stantec, CIRIA and Anthony McCloy Associates helps to develop that understanding through:

  • providing examples of surface water removal projects from the UK and Ireland and globally
  • identifying the factors which make surface water management solutions successful
  • understanding some of the UK and Ireland legislation that effects the delivery of surface water interventions
  • developing a decision support tool to help those undertaking surface water removal projects in making better decisions

ISBN: 978-1-84057-911-6

Published 20/12/2020

Best Practice For Trunk Main Flow Monitoring Areas: Interactive Guide (20/WM/08/74 -(1))

Please note - this publication is an interactive PDF, provided on a CD - no printed report is provided.

A significant number of water companies have started using Trunk Main Flow Monitoring Zones (also known as Water Balance Zones) to locate areas with leakage or unaccounted for water on trunk mains. Data from these zones help direct leakage detection and consumption recovery efforts.


While some companies are at the maturity stage in their use of Trunk Main Flow Monitoring Zones (FMZs) others are just starting on the journey. There has been no best practice or standard for the development or use of FMZs to date. Creating and maintaining a successful FMZ requires a high amount of effort, investment, time and energy. With future industry’s challenge to reduce leakage and UKWIR’s big question on zero leakage by 2050, a best practice guide for FMZs is needed and gaps in the knowledge and technology for managing trunk mains should be identified.


This interactive pdf provides a quick and easy guide to establishing the approach and the factors which should be considered. It is an overview and anyone who requires more detail should consult the full report (20/WM/08/74).