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28 June 2023 | Story Nonsindiso Qwabe | Photo Sipplied
Dr Patricks Voua Otomo
Dr Patricks Voua Otomo says cholera is one of the most vicious threats to public health.

South Africa’s water challenges and dilapidating infrastructure could mean that cholera is here to stay. The recent cholera outbreaks in Gauteng and the Free State were a warning sign that the quality of the country’s water is questionable.

According to Dr Patricks Voua Otomo, Head of the Ecotoxicology Research Laboratory and Subject Head: Zoology and Entomology in the Faculty of Natural and Agricultural Sciences, we remain at risk of recurring and isolated outbreaks until the country’s failing water systems are addressed.

Systemic failure poses significant risks to public health

He warned that as long as the country’s wastewater treatment works are in a poor to critical state, they pose significant risks to public health and the environment.

“Our water systems are connected, and in South Africa one of our greatest challenges is poorly treated wastewater systems and highly polluted rivers. The current cholera outbreak isn’t happening in peculiar regions. It’s in areas where people consume questionable drinking water. The water we have is not of good quality, and people shouldn’t be consuming it,” he said.

Dr Otomo said that cholera is one of the most vicious threats to public health and an indicator of inequality, because bacteria may continue to thrive if the current conditions remain unchanged. “All it takes to get cholera is a drop of contaminated water in your system to fall sick or even die. In a country like ours, where many people experience water scarcity and rely on unsanitary water sources, they are vulnerable to being easily exposed to bacterial diseases such as cholera.”

Water treatment plants require urgent intervention

The current cholera outbreak could be subsiding, but he warns that it is only a matter of time before it resurfaces, or other waterborne diseases wreak havoc if things remain unchanged.

“We urgently need to address the failing infrastructure, improve the quality of our drinking water, and how water gets treated before being released into river streams – or we’ll remain at risk. Cholera is just one of many waterborne diseases. High E. coli levels were found on our beaches just recently, which is an indicator of other bacteria present in the water. We are really in trouble.”

News Archive

New publication on groundwater remediation soon to be introduced
2017-05-05

Description: Prof Abdon Atangana groundwater remediation Tags: Prof Abdon Atangana groundwater remediation

A new book from Prof Abdon Atangana from
the UFS Institute for Groundwater Studies
proposes new techniques for groundwater
remediation, including guidelines on how chemical
companies can be positioned in any city to avoid
groundwater pollution.
Photo: Pixabay

A new publication, Fractional Operators with Constant and Variable Order with Application to Geo-Hydrology, will be published later this year, on 1 November 2017. The author, Prof Abdon Atangana, from the Institute of Groundwater Studies at the University of the Free State, said the book proposes new techniques for groundwater remediation, including guidelines on how chemical companies can be positioned in any city to avoid groundwater pollution.

Focus of the book
Prof Atangana said researchers and practitioners interested in groundwater modelling and remediation from applied mathematical and geo-hydrology backgrounds, will benefit from reading this book.

According to Elsevier, the book provides a physical review of fractional operators, fractional variable order operators, and uncertain derivatives to groundwater flow and environmental remediation. It presents a formal set of mathematical equations for the description of groundwater flow and pollution problems using the concept of non-integer order derivative. Both advantages and disadvantages of models with fractional operators are discussed.

“Researchers and practitioners
interested in groundwater modelling
and remediation from applied
mathematician and geo-hydrology
backgrounds, will benefit from
reading this book.”

About the author
Prof Atangana specialises in applied mathematics, groundwater modelling, fractional calculus and their applications, methods for partial differential equations, methods for ordinary differential equations, iterations methods, asymptotic methods, perturbations methods, and numerical method for fractional differential equations, uncertainties analysis. He has participated in 18 international conferences, organised six special sections and symposiums in international conference in Europe, Africa, Asia and USA, and has been invited as plenary speaker in eight international conferences. He also serves as editor on 20 international journal of mathematics and applied mathematics and editor-in-chief of two international journals of applied mathematics.

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