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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

SmartDrive devices give UFS wheelchair users more independence
2017-12-01

 Description: Cuads Tags: SmartDrive Power Assist, accessibility, Martie Miranda, CUADS, wheelchair users 

From the left, are: David Mashape; Martie Miranda, Head of the
Center for Universal Access and Disability Support at the UFS;
and Lawrence Qamba, celebrating the recent acquisition
of two SmartDrive Power Assist devices.
Photo: Johan Roux

Students who make use of wheelchairs at the University of the Free State (UFS) will now be able to move around campus more independently than before. This is thanks to two SmartDrive Power Assist devices acquired by the university.

Accessibility is very important to the institution and with these devices clipping onto a manual wheelchair to make it motorised, students will not have to ask for help that often. It will assist them in overcoming obstacles they face every day.

Different surfaces pose different challenges 
According to Martie Miranda, Head of the Center for Universal Access and Disability Support (CUADS), one of the most important advantages of the SmartDrive machines is that it enhances the independence of students. The devices were bought with funds received from the Department of Higher Education and Training specifically allocated for accessibility and infrastructure.
 
“While the UFS is addressing inaccessibility on its campuses, which will take time, this will help to motorise wheelchairs for wheelchair users to move around more easily. Students can now move around independently without necessarily asking for help, for example, to get up very steep ramps.” Miranda says some surfaces, such as grass and gravel, has its own unique challenges for wheelchair users.

A few years coming

The SmartDrive devices are operated by a Bluetooth watch. By tapping twice on the chair or clapping twice, the motor propels the wheelchair forward and stops when tapped twice, while also braking with one’s hands. The speed can also be controlled by the user. The machines use rechargeable batteries, with a fully charged battery lasting up to 15 hours.
 
Acquiring the devices was a process of a few years, and CUADS is happy to finally employ them to the benefit of their students. Miranda says the determination and support of Prof Nicky Morgan, Vice-Rector: Operations, and the assistance of Nico Janse van Rensburg, Senior Director: Top Management, were instrumental in buying the devices.

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