Deputy Dean Faculty of Science, Nelson Mandela University
Gaathier writes in the Conversation, October 27th, 2019:
“The world’s freshwater supplies are at risk. This is a threat to all life on the planet. It’s therefore no surprise that water purification has turned into a multibillion dollar global business.
The World Bank estimates that at least $150 billion a year will be required to give the entire global population access to clean drinking water by 2030. There’s no silver bullet when it comes to the technology available to tackle severe water shortages. Several options therefore need to be explored.
One purification option can be found in nature – wetlands. Research shows that wetlands are able to act as filters of water in numerous ways. This includes the uptake of pollutants by plants, soils and even microbes present in the wetlands….”