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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

Students attend prestigious National Astrophysics and Space Science Programme
2014-08-22


From the left are: Thokozane Ngcongwane with Mbali Xaba and Thabo Kumalo (both third-year Physics and Chemistry students).

Three students from our Qwaqwa Campus – Thokozane Ngcongwane, Mbali Xaba and Thabo Kumalo – were recently selected to attend the prestigious National Astrophysics and Space Science Programme (NASSP). The programme – in partnership with the National Research Foundation (NRF) – ran for two weeks at the South African Astronomical Observatory (SAAO) in Cape Town.

The project targets students from formerly disadvantaged institutions of higher learning, where astronomy and astrophysics are not offered.

Students are invited to apply for the programme, with emphasis placed on students majoring in mathematics and physics. Students from other fields are also invited to apply, though. The programme allows for the development of black astronomers and astrophysicists, which are in demand in the ever-growing environment of astronomy in South Africa.

“Topics such as gravitational lenses, black holes, stellar evolution and the mysteries of cosmology were presented and students were invited to engage with the speakers during and after the presentations,” said Ngcongwane, a third-year Zoology and Entomology student.

The programme challenged them to work on basic astrophysical concepts in groups while individual written assignments were part of the learning process as well.

“Given the lack of information about the complexities of astronomy the students had, this was the most ideal time to learn about all matters astronomy and astrophysics as lectures offered a lot to young and excited minds,” Ngcongwane said.

 

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