Connecting Waterpeople

You are here

Where does this contamination come from?

  • Where does this contamination come from?
    Test results: Two red stripes show that there is a contamination.
  • Where does this contamination come from?
    Synthetic gold nanoparticles (left) with DNA-detector (right).
  • When bodies of water become polluted, it is important to find the cause as quickly and as economically as possible. To this end, TU Wien has now developed a new, DNA-based rapid testing procedure.

About the entity

Technische Universität Wien
At TU Wien, we have been conducting research, teaching and learning under the motto 'Technology for people' for over 200 years. TU Wien has evolved into an open academic institution where discussions can happen.
ACCIONA

Water contamination is one of the world’s major health risks. In order to swiftly resolve the problem in the event of faecal contamination, it is vital that the cause is identified as quickly as possible: is it contamination from agriculture? Or waste water from sewage?

Researchers at TU Wien have developed a simple method for detecting water contamination from ruminants directly at source, using a simple DNA test. Information on the underlying technology was recently published in the specialist journal ‘Nature – Scientific Reports’.

DNA tests

Methods for detecting the source of faecal water contamination using DNA have existed for some time. However, these methods were complicated, expensive and time consuming, requiring samples to be taken and then sent to a laboratory for genetic analysis. “Certain bacteria are only found in the faeces of very specific species of animal. When analysing DNA samples of these bacteria, you can pinpoint exactly which creatures are the source of the contamination,” explains Georg Reischer from the Institute of Chemical Engineering at TU Wien. “There are, for example, bacteria which are commonly found in the intestinal microbiome of ruminants. If this type of DNA is found in a water sample, it is highly likely that the contamination originated from grazing cattle.”

The idea of developing a simple testing procedure based on this method was developed at TU Wien a number of years ago. However, adapting the detection method so that it would work and could be carried out quickly and reliably was not so easy, particularly without specialised biotechnological knowledge.

Now, however, the technology has been perfected and published in a scientific journal and is set for market launch in the form of a simple testing device. “The bacteria are destroyed, the DNA is amplified in a targeted manner and then detected using a simple strip, much like a pregnancy test,” says Georg Reischer. “Fundamentally, this technology is applicable to many different bacteria and viruses, but for now we are concentrating on the detection of dangerous microbes in water, this being a particularly widespread problem.”

The technology was developed by TU Wien in partnership with the Department of Agrobiotechnology, IFA-Tulln at the University of Natural Resources and Life Sciences, Vienna and within the framework of the Inter-University Cooperation Centre Water and Health. The next step in this process will be to develop a prototype; we are currently still searching for a suitable industry partner to collaborate with. The measurement device is expected to cost a few hundred euros. 
 

Subscribe to our newsletter

The data provided will be treated by iAgua Conocimiento, SL for the purpose of sending emails with updated information and occasionally on products and / or services of interest. For this we need you to check the following box to grant your consent. Remember that at any time you can exercise your rights of access, rectification and elimination of this data. You can consult all the additional and detailed information about Data Protection.

Featured news

23/07/2020 · Floodings · 18

Hochwasserdaten aus 500 Jahren: Europas Flüsse und das Klima