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02 March 2022 | Story Prof Anthony Turton | Photo Supplied
Prof Anthony Turton, Affiliated Professor in the Centre for Environmental Management at the University of the Free State (UFS), writes that in the face of the typhoid outbreak, we need to renew our trust in science, but also wake up and smell the coffee.

Opinion article by Prof Anthony Turton from the Centre for Environmental Management, University of the Free State .
The recent news has been dominated by so many things that an important signal has been drowned out by the noise. That small signal is the announcement by the NICD that typhoid has been identified in parts of the country, so the prudent approach is to boil the water coming from taps. While this is an important development, it needs to be placed into context.  For starters, the NICD is a credible institution, so anything they say must be taken seriously. This issue brings three important factors into clear focus. Let us unpack each of these in order to gain greater perspective. 

The issue of trust 

The first is the issue of trust. This is a global phenomenon, most notably associated with social media that has enabled each person to theoretically have access to the entire quantum of our cumulative knowledge as an apex species on planet earth. In an instant, each person has the capacity to become an expert on a given topic. We have seen this playing out in the COVID-19 space, most notably as the efficacy of the vaccination programme has been questioned. While it is great that so much information is available to everyone instantly, it is also a problem, because unless the individual is trained to filter out the noise, they are rapidly overloaded with stuff that causes them to panic. In South Africa this has an added dimension, driven by the findings of the Zondo Commission, which in general indicate a severe trust deficit between government and the general population. Seen in this light, it is highly likely that the typhoid issue will fall directly into that chasm of trust and serve to widen it even further. This needs to be dealt with in our collective best interest, because panic serves nobody in a constructive way. Therefore, the first part of my core message is that we must avoid the urge to become instant experts by deferring the scientific facts to the scientific professionals. Sadly, science has been a victim of this trust deficit, so my voice might be lost in the howling gale of discontentment. 

The problem of deteriorating water quality

The second is the problem of deteriorating water quality. In this regard, we are on absolutely solid ground, because we know – without fear of contradiction – that our water quality has been on a downward trajectory for some time. If we are looking for a pivotal moment, we might consider the acid mine drainage decant that first hit the public attention in 2002. Amid a flurry of activism and a media frenzy, we have the sad reality, two decades later, that absolutely nothing has been done about this matter. Highly acidic mine water, rich in a dissolved cocktail of metals that include uranium, arsenic, cadmium, and mercury, have continued to flow into our rivers and dams in mining areas of the country. But more importantly, we have also witnessed the systematic collapse of our wastewater infrastructure, which has accelerated over the past decade; this is best epitomised by the unsuccessful attempt of the SANDF to prevent the flow of raw sewage into the Vaal River at Emfuleni. Two billion rand later, we are no closer today to finding a solution than we were a decade ago. The numbers are staggering. As a nation, we produce over five billion litres of raw sewage every day. The latest credible calculation of that flow indicated that about 4,2 billion litres were being discharged daily into our rivers in an untreated format. That represents a tsunami of human waste inundating our rivers and dams, without respite, for more than a decade. 

This is probably our biggest single challenge as a nation. In my professional opinion, this is a national security issue, because it impacts negatively on the lives of each citizen daily. It is destroying the economy from within by damaging the health of the individual, without them even knowing about it. You see, in sewage return flows, we find every substance that is ever dispensed in the retail sector. Think of the pharmaceutical industry. Imagine how much medication is sold each day by major pharmacies countrywide. Every item sold ends up in the sewage stream in a partially metabolised format. These include antibiotics, antiretrovirals, antidepressants, oestrogen used for contraception, and Viagra used to keep an aging population happy. So, we need to think of the sewage streams being discharged into our rivers and dams as thousands of tons of medication, still viable even in its partially metabolised form, to which we are exposing trillions of pathogenic microbes that are flourishing in the warm nutrient-rich waters. Think of this as a boot camp for microbes, because lazy and weak ones are destroyed by the low concentration of antibiotics, leaving only the stronger ones to flourish. In short, our boot camp for microbes is producing the next generation of multidrug-resistant pathogens. It is happening right before our eyes.  Simply think about this logically and draw your own conclusion if you choose to mistrust science for reasons of your own.  Does it make sense to allow the discharge of more than four billion litres of sewage daily into our rivers and dams, without anticipating some form of unintended consequence?  

Our ability to cope as a nation

The third is the issue of our ability to cope as a nation. Here is where it gets really interesting, because at the very time when we are facing multiple risks to our economic well-being – COVID-19, unemployment, capital flight, energy crisis, corruption, to name but a few – we also need to be at our peak performance when it comes to finding solutions. We can say, with a high level of confidence, that our capacity to reach consensus on the way to solve the complex problems we are facing, is probably at an historic low (and deteriorating). In fact, we can say that there is an inverse relationship between our need to find consensus on a viable way ahead, and our capacity to generate the very consensus on which our survival as a species depends. This sounds a little dramatic, but I am using it to illustrate the point that globally, our capacity to unite in the face of a single common threat – climate change – is being eroded by many forces. These include the deficit of trust in government (point one noted above), the growing mistrust of science (exacerbated by the COVID-19 pandemic and the manifest as social pushback from the anti-vaxxers and the climate change denialists), and the increased sense of helplessness that each person is confronted with.

All of these are manifested in the typhoid issue. While typhoid is clearly a bad thing, we need to place it in context. Just as the COVID issue has shown us, the fatalities are relatively few, and while tragic to the individual families impacted, seen through the lens of logic and reason, this is not a show-stopper. What it does is highlight the issue of our failing sewage infrastructure. We can no longer simply accept that incompetent politicians can muddle their way through a growing crisis. We have to hold them accountable. We must convert the rising sense of rage into the high-octane rocket fuel of change. We need to say enough is enough. Now is the time that we demand technically competent people be appointed into specialist jobs, and then held fully accountable. We need to depoliticise the deployment of cadres, for that policy has brought us the failing infrastructure we see in Eskom, PRASA, municipal wastewater systems, and many other failed SOEs. 

In the face of the typhoid outbreak, we need to renew our trust in science, but also wake up and smell the coffee by realising that we cannot simply discharge billions of litres of acidic mine water and raw sewage into our rivers and dams, without encountering unintended consequences. Those consequences might just be deadly.

News Archive

UFS physicists publish in prestigious Nature journal
2017-10-16

Description: Boyden Observatory gravitational wave event Tags: Boyden Observatory, gravitational wave event, Dr Brian van Soelen, Hélène Szegedi, multi-wavelength astronomy 
Hélène Szegedi and Dr Brian van Soelen are scientists in the
Department of Physics at the University of the Free State.

Photo: Charl Devenish

In August 2017, the Boyden Observatory in Bloemfontein played a major role in obtaining optical observations of one of the biggest discoveries ever made in astrophysics: the detection of an electromagnetic counterpart to a gravitational wave event.
 
An article reporting on this discovery will appear in the prestigious science journal, Nature, in October 2017. Co-authors of the article, Dr Brian van Soelen and Hélène Szegedi, are from the Department of Physics at the University of the Free State (UFS). Both Dr Van Soelen and Szegedi are researching multi-wavelength astronomy.
 
Discovery is the beginning of a new epoch in astronomy
 
Dr van Soelen said: “These observations and this discovery are the beginning of a new epoch in astronomy. We are now able to not only undertake multi-wavelength observations over the whole electromagnetic spectrum (radio up to gamma-rays) but have now been able to observe the same source in both electromagnetic and gravitational waves.”
 
Until recently it was only possible to observe the universe using light obtained from astronomical sources. This all changed in February 2016 when LIGO (Laser Interferometer Gravitational-Wave Observatory) stated that for the first time they had detected gravitational waves on 14 September 2015 from the merger of two black holes. Since then, LIGO has announced the detection of two more such mergers. A fourth was just reported (27 September 2017), which was the first detected by both LIGO and Virgo. However, despite the huge amount of energy released in these processes, none of this is detectable as radiation in any part of the electromagnetic spectrum. Since the first LIGO detection astronomers have been searching for possible electromagnetic counterparts to gravitational wave detections. 
 
Large international collaboration of astronomers rushed to observe source
 
On 17 August 2017 LIGO and Virgo detected the first ever gravitational waves resulting from the merger of two neutron stars. Neutron star mergers produce massive explosions called kilonovae which will produce a specific electromagnetic signature. After the detection of the gravitational wave, telescopes around the world started searching for the optical counterpart, and it was discovered to be located in an elliptical galaxy, NGC4993, 130 million light years away. A large international collaboration of astronomers, including Dr Van Soelen and Szegedi, rushed to observe this source.
 
At the Boyden Observatory, Dr Van Soelen and Szegedi used the Boyden 1.5-m optical telescope to observe the source in the early evening, from 18 to 21 August. The observations obtained at Boyden Observatory, combined with observations from telescopes in Chile and Hawaii, confirmed that this was the first-ever detection of an electromagnetic counterpart to a gravitational wave event. Combined with the detection of gamma-rays with the Fermi-LAT telescope, this also confirms that neutron star mergers are responsible for short gamma-ray bursts.  
 
The results from these optical observations are reported in A kilonova as the electromagnetic counterpart to a gravitational-wave source published in Nature in October 2017.
 
“Our paper is one of a few that will be submitted by different groups that will report on this discovery, including a large LIGO-Virgo paper summarising all observations. The main results from our paper were obtained through the New Technology Telescope, the GROND system, and the Pan-STARRS system. The Boyden observations helped to obtain extra observations during the first 72 hours which showed that the light of the source decreased much quicker than was expected for supernova, classifying this source as a kilonova,” Dr Van Soelen said.

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