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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

Guidelines for diminishing the possible impact of power interruptions on academic activities at the UFS
2008-01-31

The Executive Management of the UFS resolved to attempt to manage the possible impact of power interruptions on teaching and learning proactively. Our greatest challenge is to adapt to what we cannot control at present and, as far as possible, refrain from compromising the quality of teaching and learning at the UFS.

First the following realities are important:

  • There is no clarity regarding the period of disruption. It is possible that it may last for a few months to approximately five years.
  • At present Eskom (as well as Centlec) is not giving any guarantees that the scheduled interruptions will be adhered to. It comes down to this that the power supply may be interrupted without notice, but can also be switched back on in an unpredictable manner.
  • Certain scheduled teaching-learning activities/classes, etc. may (initially) be affected very negatively, as the UFS is working according to a scheduled weekly module timetable at present.
  • During the day certain venues with natural lighting and ventilation may remain suitable for contact sessions, while towards evening venues will no longer be suitable for the presentation of classes.
  • Lecturers will have to fall back on tried and tested presentation methods not linked to electricity, without neglecting innovative technology-linked presentation methods, or will have to schedule alternative teaching-learning activities for lost teaching-learning time.

Against the background of the above-mentioned realities, we secondly request you to comply with the following guidelines as far as possible:

  1.  In addition to your module work programme, develop an alternative programme (which can, for example, among others, consist of additional lectures or a more rapid work rate) in which provision is made for a loss of at least two weeks’ class/contact time during the semester. Consult Centlec’s schedule of foreseen power interruptions for this planning.
  2. Should it appear that your class(es) will probably be disrupted seriously by the scheduled power interruptions, you should contact your dean for possible rescheduling of your timeslot and a supplementary timetable. A prescheduled supplementary timetable for Friday afternoons and Saturdays and/or other suitable times will be compiled for this purpose in co-operation with faculties.
  3. The principle of equivalent educational treatment of day and evening lectures must be maintained at all times. Great sensitivity must be shown by, for instance, not only rescheduling the lectures of evening students - given specifically the sensitivity regarding language and the distribution of day and evening lectures.
  4. In the case of full-time undergraduate courses, no lectures should be cancelled beforehand, even when a power interruption is announced, as power interruptions sometimes do not take place or are of shorter duration than announced. If the power supply is interrupted, it should not be accepted that it will remain off and that subsequent lectures will not take place. Should a power interruption occur in a venue, lecturers and students must wait for at least ten minutes before the lecture is cancelled. Should natural lighting and ventilation make it possible to continue with the lecture, it should be done.
  5. Our point of departure is that no student must be able to use the power interruptions and non-presentation/cancellation of lectures as an argument for having failed modules, for poor academic performance or to negotiate for a change of examination scheduling.

Thirdly we wish to make suggestions regarding teaching and learning strategies (which can be especially useful in case of a power interruption).

  • Emphasise a greater measure of self-activity (self-initiative) on the part of students in this unpredictable environment right from the start.
  • Also emphasise the completion of assessment assignments in good time, so that students cannot use power interruptions as an excuse for late submission. Flexibility will, however, have to be maintained.
  • Place your PowerPoint presentations and any other supplementary learning materials on the web.
  • Use the opportunity to stimulate buzz groups, group work, panel discussions and peer evaluation.

Please also feel free to consult Dr Saretha Brussow, Head: Teaching, Learning and Assessment Division at the Centre for Higher Education Studies and Development, about alternative teaching, learning and assessment strategies. Phone extension x2448 or send an email to sbrussow.rd@ufs.ac.za .

Thank you for your friendly co-operation!

Prof. D. Hay
 

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