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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

Department celebrates 50th anniversary
2009-03-25

 
The first Departmental Head and the subsequent Departmental Chairpersons at the dinner on 14 March this year. From left: Proff Bernard Prior (1991-1998), Piet Lategan (1962-1990), Derek Litthauer (1998-2002) and James du Preez (2002-). These are all the Heads/Chairpersons of the Department since its founding in 1959, with the exception of Prof Hans Potgieter who acted as Head during 1959-1962.
Photo: Stephen Collett
 
Department celebrates 50th anniversary

On 13 March the Department Microbial, Biochemical and Food Biotechnology at the University of the Free State (UFS) celebrated its 50th anniversary in a splendid fashion with a lecture entitled, The origin of life: Exactly how did life begin? as part of the Darwin commemorative lecture series, followed by a reunion of current and former staff members and postgraduate students of the department with a barbeque on the following day.

The proceedings were concluded on 14 March with a gala dinner in die Centenary Complex at the UFS attended by 153 staff members, post-graduate students (current and former) and other guests. During the dinner the guests were treated to a presentation of historical photos of the founding and development of the department. Currently the department is one of the largest departments in the Faculty of Natural and Agricultural Sciences in respect of the number of staff members and students as well as research outputs. This is the result of entrepreneurial actions to increase student numbers and research activities, as well as the merging with the smaller Department of Biochemistry in 1988 and more recently with the Department of Food Science in 2002. The department comprises 20 academics, 24 support staff and 65 postgraduate students. It also boasts 12 lecturers with ratings from the National Research Foundation (NRF), which include three academics with a B-rating, an indication of international recognition for their research. The department has the largest number of lecturers with an NRF-rating at the UFS. 

“It was interesting to learn during the reunion of the variety of professions occupied by former students of the department, i.e. at other tertiary educational institutions, the CSSIR, SAPPI, Sasol and a multitude of other industries, as well as at research institutions in the USA and Australia,” said Prof. James du Preez, Head of the Department.

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