#WaterWatch

When water saving solutions go horribly wrong

While South Africa is still trying to find solutions to the water crisis as a result of drought, experts advise that rushed decisions could end up doing more harm than solving the problem.

One solution suggested for our dams, was to follow a Californian model that saw thousands of small plastic balls pumped onto the surface of dams to prevent evaporation.

During their time on the reservoir, the balls are estimated to have saved 1.7 million cubic metres of water.

But a new study published in Nature Sustainability shows that producing the balls used more water in their creation than was saved during their deployment.

Dr Kaveh Madani, Centre for Environmental Policy at Imperial College London shares some of the findings into the viability of using these balls to save water.

When we looked at the cost of doing this we realised that it was crazy because the amount of water that was saved through this process was a million of dollars cheaper than the cost of the ball... You spend a lot of money into saving and the question is, is it worth it?

Dr Kaveh Madani, Centre for Environmental Policy at Imperial College London

It was probably the mistake of the politicians for making this look like a really good idea as water evaporation suppression method and it wasn't.

Dr Kaveh Madani, Centre for Environmental Policy at Imperial College London

The process of producing 96 million balls of standard 5mm thickness would use an estimated 2.9 million cubic metres of water because the balls are made of a kind of plastic that requires oil, natural gas and electricity to produce, all of which require large quantities of water.

To hear the rest of the interview, listen below:


Recommended

by NEWSROOM AI
Read More
Over 200 million litres of water saved through #SmartWaterMeterChallenge

Over 200 million litres of water saved through #SmartWaterMeterChallenge

Almost a year ago CapeTalk partnered with Stellenbosch University and Shoprite Group to install water saving devices at schools.

City of Cape Town halts water desalination process

City of Cape Town halts water desalination process

CEO at Accelerate Cape Town Ryan Ravens says desalination is an extremely expensive option for water augmentation.

CT deputy mayor foresees further relaxing of water restrictions come November

CT deputy mayor foresees further relaxing of water restrictions come November

Deputy Mayor Ian Neilson predicts that the National Water and Sanitation Dept will go lower than Level 5 restrictions this summer.

Cape dams hit 75% as level 5 water restrictions come into effect

Cape dams hit 75% as level 5 water restrictions come into effect

The City of Cape Town is asking residents to use no more than 70 litres per person per day, up from the previous 50-litre limit.

Global workshop offers ideas on how to build a water resilient Cape Town

Global workshop offers ideas on how to build a water resilient Cape Town

100 Resilient Cities is a project which helps cities worldwide become more resilient to social, economic and climate challenges.

UCT Architecture students design water points for Imizamo Yethu residents

UCT Architecture students design water points for Imizamo Yethu residents

UCT's School of Architecture 2nd year students are doing their best to improve the lives of people in Imizamo Yethu.

Popular articles
News24 exposes how big SA corporates are funding fake news

News24 exposes how big SA corporates are funding fake news

A News24 investigation has exposed how some of South Africa's biggest companies have been advertising on fake news websites.

Zille open to renaming Robben Island swim after 'nation-builder' Theo Yach

Zille open to renaming Robben Island swim after 'nation-builder' Theo Yach

Premier Helen Zille describes Yach as one of the most generous, warm, open-hearted and community-driven people she's ever known.

[Watch] SA choir stuns with isiZulu cover of Ed Sheeran’s ‘Shape of You’

[Watch] SA choir stuns with isiZulu cover of Ed Sheeran’s ‘Shape of You’

Khabazela shares some of the most popular tweets, posts, and videos on 'What's gone Viral'.

[WATCH] Man exposes people selling stolen goods on Facebook

[WATCH] Man exposes people selling stolen goods on Facebook

Anton Fourie says he used his phone to record the interaction to create awareness of what is going on in the community.

Pieter du Toit on VBS, Malema's EFF and contradicting ethics

Pieter du Toit on VBS, Malema's EFF and contradicting ethics

Malema has accused the rogue unit of still being operational and Pravin Gordhan of working in the background against the EFF.

Zondi tells court that she had to 'look happy' in church out of fear for Omotoso

Zondi tells court that she had to 'look happy' in church out of fear for Omotoso

Cheryl Zondi is testifying against Pastor Timothy Omotoso who is accused of rape and human trafficking in his Durban church.