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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 awards its innovative thinkers
2009-11-18

Here are, from the left: Prof. Van Wyk with first-prize winners Precious Setlaba and Themba Motsoeneng and Prof. Muriel Meiring, the students’ promoter.
Photo: Stephen Collett


The University of the Free State (UFS) recently announced the winners of the Innovation Fund Competition. This national competition, which is organised by the Department of Science and Technology aims to promote entrepreneurship through the commercialisation of the innovative ideas of young entrepreneurs.

Every participating educational institution first has an in-house competition in which a total prize money of R100 000 is at stake. At the UFS 14 business plans from students were received and evaluated by six external adjudicators. The three winners now have to take part in Phase II of the competition where 60 competitors from 20 universities will compete. The winners of the National Competition will receive prizes of up to R300 000. This money must be used for the development of the innovative idea with which the prize was won.

The first prize in the UFS’s Innovation Fund Competition of R50 000 was won by Themba Motsoeneng and Precious Setlaba from the Department of Haematology for the development of low-cost diagnostic assays for thrombotic diseases and bleeding disorders with the aim of supplying these test assays at a much lower cost to pathology laboratories all over the country. “This exciting idea appealed to many of the judges, especially because it can contribute to low cost health care in the country,” says Prof. Gerrit van Wyk, organiser of the Innovation Fund Competition at the UFS. The second prize of R30 000 was won by Charl Jaftha, MSc student in Physics. He has developed a low-cost hearing aid the size of a cigarette box. It contains a microphone and electronics to amplify the sound. The third prize of R20 000 was won by Adriaan Taylor and Jaco Brink, both MBA students. They designed a two-in-one lawnmower that would enable the average gardener with a bulky garden to shred the garden refuse and recycle it through composting or disposal through the normal disposal system. “One judge called this a novel use of existing technology,” says Prof. Van Wyk.
 

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