Billions people to lack water - study

2011-03-29 09:22

kalahari.com

  • Environment
    This volume of "The New Encyclopedia of Southern Culture" surveys the dynamic environmental forces... Now R886.00
    buy now
Washington - More than one billion urban residents will face serious water shortages by 2050 as climate change worsens effects of urbanisation, with Indian cities among the worst hit, a study said on Monday.

The shortage threatens sanitation in some of the world's fastest-growing cities but also poses risks for wildlife if cities pump in water from outside, said the article in the Proceedings of the National Academy of Sciences.

The study found that under current urbanisation trends, by mid-century some 993 million city dwellers will live with less than 100l each day of water each - roughly the amount that fills a personal bathtub - which authors considered the daily minimum.

Adding on the impact of climate change, an additional 100 million people will lack what they need for drinking, cooking, cleaning, bathing and toilet use.

"Don't take the numbers as destiny. They're a sign of a challenge," said lead author Rob McDonald of The Nature Conservancy, a private environmental group based near Washington.

Urban shift

"There are solutions to getting those billion people water. It's just a sign that a lot more investment is going to be needed, either in infrastructure or in water use efficiency," he said.

Currently, around 150 million people fall below the 100l threshold for daily water use. The average American has 376l delivered a day, although actual use varies widely depending on region, McDonald said.

But the world is undergoing an unprecedented urban shift as rural people in India, China and other growing nations flock to cities.

India's six biggest cities - Mumbai, Delhi, Kolkata, Bangalore, Chennai and Hyderabad - are among those most affected by water shortages. The study forecast that 119 million people would face water shortages in 2050 in the Ganges River delta and plain alone.

With an annual monsoon, India does not lack water. But it struggles to preserve the water from the wet season to the dry season, McDonald said.

West Africa, which sees some of the world's heaviest rainfall, will also face water shortages in cities such as Lagos, Nigeria, and Cotonou in Benin, the study found.

The study warned of threats to ecosystems if developing nations take water from elsewhere. India's Western Ghats region, a potential source for thirsty cities, is home to nearly 300 fish species, 29% of which are found nowhere else, it said.

Waste

"If cities are essentially drinking rivers dry, that has really bad effects on the fish and the reptiles and everything else in the river," McDonald said.

Instead, the study recommended reforms to agriculture - usually the top consumer of water - and improved efficiency, as nearly half of the water in some poor countries is wasted due to leaks.

"There is a lot of potential for increase in water-use efficiency in the agriculture sector, or indeed in the residential sector, to solve most of this challenge," McDonald said.

The study said there would be a need for international funding to help poorer nations "to ensure that urban residents can enjoy their fundamental right to adequate drinking water".

UN-led talks last year on climate change agreed on practicalities to set up a global fund to assist poor nations most hit by climate change, with a target of $100bn a year starting in 2020.

Other cities forecast by the study to face a water crunch include Manila, Beijing, Lahore and Tehran.
Read more on:    environment
NEXT ON NEWS24X
SHARE:

Read News24’s Comments Policy

24.com publishes all comments posted on articles provided that they adhere to our Comments Policy. Should you wish to report a comment for editorial review, please do so by clicking the 'Report Comment' button to the right of each comment.

Comment on this story
2 comments
Add your comment
Comment 0 characters remaining
 

Inside News24

 
/Dewani Trial
 

Red Bull Lionheart trail run - not for the fainthearted!

Entries are open, so what are you waiting for?

 
 

Where were you when you last felt alive?

Adventure holidays for your bucket list
Top 10 water sports to try before you die
6 impressive camping tips
LOL! The 8 stages of marathon running

Jobs in Cape Town [change area]

Property [change area]

Travel - Look, Book, Go!

Magical Massinga

Spend 5 nights at the gorgeous Massinga Beach Lodge in Mozambique and only pay for 4 from R13 220 per person sharing. Includes return flights, accommodation, transfers and romantic turndown. Book now!

Kalahari.com - shop online today

Save up to R1000 on Hisense smartphones!

View the large range of Hisense smartphones. Buy today and save up to R1000!

Deal of the week!

Save R1200 on the Samsung 48” smart full HD LED television now only R8799. Buy now!

Toys 4 for the price of 3

Buy 4 toys and get the cheapest FREE! Offer valid while stocks last. Shop now!

Mind blowing prices – As seen on TV

Get mind blowing prices on 1000’s of products! Shop now.

Save 20% on Nivea beauty products!

Buy any two Nivea beauty products and save 20%. Offer valid while stocks last. Shop now!

OLX Free Classifieds [change area]

Samsung Galaxy s4

Mobile, Cell Phones in South Africa, Western Cape, Cape Town. Date October 24

Best bargain in big bay

Real Estate, Houses - Apartments for Sale in South Africa, Western Cape, Cape Town. Date October 25

VW Golf 6, 1.6 Trendline (Excellent condition)

Vehicles, Cars in South Africa, Western Cape, Cape Town. Date October 25

Horoscopes
Aquarius
Aquarius

There is an easy social flow and the need to blend in, yet you may not feel entirely comfortable. Something beneath the surface...read more

There are new stories on the homepage. Click here to see them.
 
English
Afrikaans
isiZulu

Hello 

Create Profile

Creating your profile will enable you to submit photos and stories to get published on News24.


Please provide a username for your profile page:

This username must be unique, cannot be edited and will be used in the URL to your profile page across the entire 24.com network.

Settings

Location Settings

News24 allows you to edit the display of certain components based on a location. If you wish to personalise the page based on your preferences, please select a location for each component and click "Submit" in order for the changes to take affect.








Facebook Sign-In

Hi News addict,

Join the News24 Community to be involved in breaking the news.

Log in with Facebook to comment and personalise news, weather and listings.