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Available Reports: 774

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Published 14/08/2019

Treated Water Storage Assets: Good Practice for Operation & Management Version 2 (19/RG/05/50)

The purpose of this project is to provide water companies with good practice guidance for the whole life management of the construction, refurbishment, repair, operation and maintenance of treated water storage assets. Such guidance is mapped to the UKWIR Framework for Expenditure Decision Making in order to help asset managers, operators and capital investment planners better inform investment decisions to manage water quality risks.

The project was developed in conjunction with significant industry engagement, through two industry workshops involving representatives from UK Water Companies, Regulators, Academia and Industry, and five water company interviews. 

The project deliverables consist of:

  • a guidance document summarising good practices for the inspection, operation, maintenance, refurbishment, repair and new construction of treated water storage assets; and
  • a complementary spreadsheet toolkit illustrating a process to support investment planning activities for treated water storage assets through a condition assessment, deterioration and risk modelling approach.

Please note that this report – ‘Treated Water Storage Assets: Good Practice for Operation and Management – Version 2’, reference number - 19/RG/05/50 replaces the previous version (17/RG/05/48). The majority of the revisions made are to the sections on ‘external roof membranes (section 10.11)’ and ‘intelligent membranes (section 13.4.4)’ plus the associated table in Appendix 5. Please destroy or delete any copies of the previous version of the report that you have.

We apologise for any inconvenience this may cause.



ISBN: 978-1-84057-871-3

Published 06/08/2019

Catchment Management for Water Quality and Quantity (19/EQ/01/17)

This project evaluated whether catchment management makes a difference to water quality and quantity. The project included a structured evidence review and interviews of water company catchment leads. Over half of the evidence (122 catchments) demonstrated an improvement in water quality from catchment management. Measuring loads rather than concentration alone is more likely to demonstrate an effect. Effectiveness varies between pollutants, with stronger evidence of a positive effect for pesticides. The duration of post-intervention monitoring data required to detect a measurable effect varies but is on average six years, whereas most water company schemes have less than five years of targeted monitoring data. There is need for a greater consistency in the design, monitoring, evaluation and reporting for schemes and for longer term monitoring. An improved understanding is needed on the payback from catchment management including the financial, environmental, social and natural capital/ecosystem service benefits.



ISBN: 978-1-84057-873-7

Published 29/07/2019

Risk assessment of CIP data with respect to implications for drinking water sources (19/DW/13/3)

Water Safety Planning approaches underpin drinking water quality and safety management. This mandatory approach requires the systematic assessment of all hazards within catchments and their potential pathways to water, such that effective control measures can be implemented.

The Chemical Investigations Programme (CIP) has provided data on the concentrations of many trace substances in sewage influents, effluents and receiving waters. The current project, undertaken by Atkins and wca, intends to examine the CIP dataset from a drinking water quality perspective. The overall objective was to improve the understanding of the potential risks posed by trace substances to the quality of drinking water. The project included a review of the CIP data set, examining concentrations in effluent and receiving waters. This was followed by an ecotoxicological assessment of the potential human health impacts arising from the presence of trace substances in drinking water. Finally, current water treatment processes were reviewed, assessing their capability to remove key trace substances.

There is increasing public and scientific interest in the risk of emerging contaminants in drinking water and potential human health impacts. This project brings together the extensive CIP dataset and our knowledge of treatment technologies to examine this key



ISBN: 978-1-84057-872-0

Published 05/06/2019

Significance of Antibiotic Resistant Bacteria and Antibiotic Resistant Genes in Drinking Water (19/DW/02/92)

Significance of antibiotic resistant bacteria and antibiotic resistant genes in drinking water

There is increasing awareness about the presence of antibiotic resistant bacteria (ARB) and antibiotic resistant genes (ARG) in the environment and the risks posed to drinking water. Some studies have demonstrated that sources of drinking water are vulnerable to contamination by ARB and ARG. Water treatment has been found to form an effective barrier for the elimination of ARB, but ARG were eliminated less efficiently. Evidence also exists for the occurrence of both ARB and ARG in distribution systems. However, most of the information comes from studies outside the UK where patterns of antibiotic usage may not be the same as in the UK. On the basis of the information available, there is no evidence to indicate that consumption of drinking water would represent a significant route for the transmission of ARB or ARG.



ISBN: 978-1-84057-870-6

Published 08/05/2019

Workbook for Estimating Operational GHG Emissions – Version 13 (19/CL/01/27)

UKWIR has developed a standardised workbook for estimating operational GHG emissions, the Carbon Accounting Workbook (CAW), to bring consistency and accuracy to the reporting process across the industry. The workbook has been in place since 2004 and is updated annually to reflect the needs of the industry, including changes in carbon accounting practices. Updated emission factors to align with the latest UK and international data.

The key updates from version 12 to 13 of the CAW are:

Updates of the emission factors to reflect 2018 values

Addition of Hydrogenated Vegetable Oil as a new fuel



ISBN: 978-1-84057-869-0