Navigation Links
Bacteria in drinking water are key to keeping it clean

Research at the University of Sheffield, published in the latest issue of Water Science and Technology: Water Supply, points the way to more sophisticated and targeted methods of ensuring our drinking water remains safe to drink, while still reducing the need for chemical treatments and identifying potential hazards more quickly.

The research team, from the University of Sheffield's Faculty of Engineering, studied four bacteria found in the city's drinking water to see which combinations were more likely to produce a 'biofilm'. Biofilms are layers of bacteria which form on the inner surfaces of water pipes.

"Biofilms can form on all water pipes and as these are usually non-harmful bacteria, they don't present a problem," explains lead researcher, Professor Catherine Biggs. "However, biofilms can also be a safe place for harmful bacteria such as Escherichia coli or Legionella to hide. If the bacterial growth is too heavy, it can break off into the water flow, which at best can make water discoloured or taste unpleasant and at worst can release more dangerous bacteria. Our research looks at what conditions enable biofilms to grow, so we can find ways to control the bacteria in our water supply more effectively."

Funded by the Engineering and Physical Sciences Research Council, the research isolated four bacteria from water taken from a domestic tap: two were widely found in drinking water everywhere, one was less common and one was unique to Sheffield. The researchers mixed the bacteria in different combinations and found that, in isolation, none of them produced a biofilm. However, when any of the bacteria were combined with one of the common forms, called Methylobacterium, they formed a biofilm within 72 hours.

"Our findings show that this bacterium is acting as a bridge, enabling other bacteria to attach to surfaces and produce a biofilm and it's likely that it's not the only one that plays this role," says Professor Biggs. "This means it should be possible to control or even prevent the creation of biofilms in the water supply by targeting these particular bacteria, potentially reducing the need for high dosage chemical treatments."

Domestic water supplies in the UK are regularly tested for levels of bacteria and, if these are too high, water is treated with greater concentrations of chlorine or pipe networks are flushed through to clear the problem. However, the standard tests look for indicator organisms rather than the individual types which are present. Testing methods being developed by the Sheffield team as used in this research involve DNA analysis to identify the specific types of bacteria present.

"The way we currently maintain clean water supplies is a little like using antibiotics without knowing what infection we're treating," says Professor Biggs. "Although it's effective, it requires extensive use of chemicals or can put water supplies out of use to consumers for a period of time. Current testing methods also take time to produce results, while the bacteria are cultured from the samples taken.

"The DNA testing we're developing will provide a fast and more sophisticated alternative, allowing water companies to fine tune their responses to the exact bacteria they find in the water system."


Contact: Abigail Chard
University of Sheffield

Related biology technology :

1. Bacteria hold the clues to trade-offs in financial investments and evolution
2. Seeing the Future: How a Revolutionary New Bacterial Screening Device Can Predict a Patient’s Future for Tooth Decay
3. Cempra Provides Guidance on the Clinical Program Required for Regulatory Approval for Solithromycin for Community-Acquired Bacterial Pneumonia (CABP)
4. Bacterial Identification System Differentiates Virulent “Big 6” E. Coli Strains in Five Hours
5. Seeing the Future: How a Revolutionary New Bacterial Screening Device Can Predict a Patient’s Future for Tooth Decay
6. Seeing the Future: How a Revolutionary New Bacterial Screening Device Can Predict a Patient’s Future for Tooth Decay
7. New 1-step process for designer bacteria
8. Acne Cream, Probiotic Action Shares News on How Some Food may Breed Acne Causing Bacteria
9. Cempra Presents Post-Phase 2 Analysis of Solithromycins Efficacy and Safety Results from Patients with Community Acquired Bacterial Pneumonia (CABP)
10. Seeing the Future: How a Revolutionary New Bacterial Screening Device Can Predict a Patient’s Future for Tooth Decay
11. Probiotic Action Explains the New Link Between Probiotics, Bacteria and Eczema
Post Your Comments:
(Date:11/30/2015)... , Dec. 1, 2015  An interventional radiology technique shows ... the preliminary results of a study being presented today at ... North America (RSNA). --> ... for decades by interventional radiologists as a way to stop ... procedure as a means of treating obesity is new. ...
(Date:11/30/2015)... /PRNewswire/ - Zenith Epigenetics Corp. ("Zenith" or the "Company") today ... to its Board of Directors to replace Dr. ... wealth of experience as co-founder of Resverlogix, with expertise in ... --> --> Dr. Wong remarked, "I am ... Zenith,s long standing expertise in epigenetics and the advanced stage ...
(Date:11/30/2015)... Florida , November 30, 2015 ... specializing in the development of innovative peptide and gene-based ... metastatic disease, today announced it will be presenting at ... on December 1, 2015 at 2.30 PM PT. Dr. ... and Strategic Advisor will be giving the presentation and ...
(Date:11/30/2015)... , Nov. 30, 2015  Northwest Biotherapeutics (NASDAQ: ... DCVax® personalized immune therapies for solid tumor cancers, announced ... additional independent director, and the Company welcomes Neil ... in a recent anonymous internet report on NW Bio.  ... Linda Powers stated, "We agree with ...
Breaking Biology Technology:
(Date:11/19/2015)... 19, 2015  Based on its in-depth analysis of ... BIO-key with the 2015 Global Frost & Sullivan Award ... Sullivan presents this award to the company that has ... needs of the market it serves. The award recognizes ... expands on customer base demands, the overall impact it ...
(Date:11/17/2015)... -- Paris from 17 th ... Paris from 17 th until 19 th ... has invented the first combined scanner in the world which ... surface. Until now two different scanners were required: one for ... on the same surface. This innovation is an ideal ...
(Date:11/16/2015)... JOSE, Calif. , Nov 16, 2015 /PRNewswire/ ... developer of human interface solutions, today announced expansion ... Synaptics TouchView ™ touch controller and display ... architectural revolution of smartphones. These new TDDI products ... include TD4100 (HD resolution), TD4302 (WQHD resolution), and ...
Breaking Biology News(10 mins):