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20 March 2018 Photo Pexels
Water footprint important but misunderstood indicator
Water footprinting is the future of water conservation
The Water Footprint (WF) of a product, process or person provides an indication of how much fresh water is used, both direct and indirect, to produce a product, drive the process or lead a lifestyle. Although it is a very important indicator it is often misunderstood. Popular media contribute to this misunderstanding as they often use the WF to illustrate the large quantities of water used to produce a product without explaining what the footprint actually means.  

An example is a single kilogram of beef that has an average global WF 15 415 litres. This indeed sounds scary, but when one places it in context, the total WF includes 14 414 litres green water, 550 litres blue water and 451 litres grey water. Green water is the evapotranspiration of precipitation (rain), blue water is the fresh water from dams, rivers and underground sources, while grey water is the amount of fresh water required to dilute polluted water to acceptable levels.

According to Frikkie Maré, a lecturer at the Department of Agricultural Economics at the University of the Free State (UFS), the WF concept provides a new look at water conservation and sustainability. “Although the WF is not an indicator of sustainable water use, it is a useful tool to calculate total water demand and is used in the estimation of sustainability. Traditionally, water conservation was focused on the direct water use of individuals (time taken to shower, leaking taps etc.), but the WF now provides a tool to focus attention on total water demand.”

The Water Footprint Network assists individuals with this new trajectory on the water conservation front with the personal water footprint calculator that allows individuals globally to determine their personal water demand through their direct and indirect water usage. Maré believes this can cause the necessary paradigm shift in the aqua status quo by creating awareness among consumers on their total water demand.

With Water Week underway from 17-23 March 2018, UFS students and staff members are urged to make use of the personal water footprint calculator in order to become aware of the real importance of fresh water in our everyday lives.

News Archive

UFS academic appointed to prestigious academy (ASSAf)
2014-10-07

Another academic of the University of the Free State (UFS), Prof Jeanet Conradie, professor in Chemistry, was invited as newly elected member of the Academy of Science of South Africa (ASSAf).Science and research, by which new concepts are discovered, is her great passion.

Her PhD degree in Chemistry, together with also a strong background in Physics, Computer Science, Mathematics and Applied Mathematics, influenced Prof Conradie’s choice of research interest and expertise to develop gradually in the direction of computational chemistry, which is a beautiful combination of chemistry and physics.

Computational chemistry uses quantum physical principles and mathematical methods to solve chemistry problems via high-performance computerised calculations. Results obtained can be used to predict and understand the behaviour of atoms and molecules in the real world. Chemical reactions and phenomena that are impossible or too dangerous to study experimentally, can also be studied by computational chemistry. Her research team also does experimental laboratory work to combine and compare with the computational analysis. Based on these results, new materials with specific properties are developed.

The Academy of Science of South Africa (ASSAf) aspires to be the apex organisation for science and scholarship in South Africa, recognised and connected both nationally and internationally. Through its membership which represents the collective voice of the most active scholars in all fields of scholarly enquiry, ASSAf aims to generate evidence-based solutions to national problems.

Prof Corli Witthuhn: Vice-Rector: Research at the UFS said: “The UFS is very proud of Prof Conradie, who is also the first female professor in the Department of Chemistry.  Jeanet is a highly productive researcher publishing in high-impact journals.  She has extensive international networks and collaborations, increasing the impact of her work even more.  We are currently awaiting the outcome of her application for NRF rating and believe that she will receive an excellent rating.”


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