Drinking Water Quality & Health 

TASTE AND ODOUR (T&O): METHODS OF DETECTION

Reference: 21/DW/13/6
ISBN: 978-1-84057-927-7
Published Date: 09/11/2021

The UKWIR project ‘Taste and Odour (T&O): Methods of Detection’ reviewed literature, carried out comprehensive non-targeted chemical and microbiological analysis and developed targeted analytical methods for various key chemical compounds; to help water companies better understand and measure the compounds that cause T&O. The project used innovative techniques such as the analysis of carbon cartridge filter samples and the first use of DNA sequence based microbiology in T&O investigations. This project report includes:

  • A summary of the literature review; including a T&O threshold summary table.
  • Details of the non-targeted analysis; including the methodologies used, the results obtained and the conclusions drawn.
  • A summary of the targeted methods that were developed.
  • Recommendations for techniques for water companies to employ to help them in the investigation of customer contacts about T&O.
  • Recommendations for future projects to help further increase knowledge in this area.

Three Standard Operating Procedures (SOPs) were also produced as part of this project.  These were for  1) brominated and chlorinated anisoles; 2) alkyl benzenes and naphthalenes; 3) sulphur compounds and are provided in separate reports (UKWIR members only).

Price: £300  

Developing management strategies for increasingly frequent algal blooms in source waters

Reference: 20/DW/07/10
ISBN: 978-1-84057-888-1
Published Date: 15/06/2020

This research aims to understand the potential for prediction, the implications of climate change, and potential for better management, through a process of literature review, data collation and analysis, and the investigation of predictive methods. A literature review provided the background for the development of an approach and tools. Data collected from the steering group were analysed. A predictive tool was developed, using the method of Support Vector Machine/Regression. The support vector regression model appears to be a reasonable method with which to analyse the multi-parameter interactions that are likely to govern algal blooms. There is an offset in predictions at present which limits the immediate usefulness of the model, which would make predictions ‘too late’ to be useful. This may be a reflection of the limited dataset, particularly if there are parameters (features) which we don’t have data for, but that may be significant to algal blooms.

Price: £450  

Significance of Antibiotic Resistant Bacteria and Antibiotic Resistant Genes in Drinking Water

Reference: 19/DW/02/92
ISBN: 978-1-84057-870-6
Published Date: 05/06/2019

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.

Price: £100  

UKWIR Support for EC Aquavalens project

Reference: 18/DW/02/88
ISBN: 1 84057 860 2
Published Date: 16/10/2018

This report describes the work undertaken on the Aquavalens project funded by the European Commission. The project aimed to develop suitable techniques for the recovery of target microorganisms from large volumes of water and suitable molecular methods based on quantitative polymerase chain reaction (qPCR) for the detection of waterborne pathogens in large and small water supply systems and water used for food production. A number of promising techniques developed and validated in the early stages of the project were trialled at a number of locations in Europe including a water supply in the UK. The performance of the methods was found to vary with the type of organism being examined and the source of water. It was concluded that further methodological refinements would be necessary to develop robust techniques for pathogen detection particularly in sources of drinking water. Techniques were also developed for microbial source tracking and online bacteriological monitoring devices were evaluated.

Price: £200