Moderator: Tanada



OILEATER wrote:Life Straw is fine, there are hundreds of water purification devices currently on the market. The problem is sustainablility, none of the current devices can purify enough water for large populations. The current purification devices also contaminate quickly. So like you said, better buy several hundred.





max_power29 wrote:Most of the Cost of a bottle of water comes directly from oil. The plastic bottle itself is made from petrochemicals (oil and natural gas), then pumping and/or purification of the bottled water is energy intensive (uses oil directly or by using a substitutable form of energy, which drives up the price of all energy), and finally transporting the bottled water takes a lot of diesel because water is a very heavy/dense compound.....so in the end consuming processed water also consumes oil. It is difficult to say which resource (potable water or light sweet crude) is more important because in reality they are so intertwined.

OILEATER wrote:Just like the technology is available to start moving away from massive oil consumption, but we don't. Running out of oil will be a problem, but not as severe as running out of potable water.

Doly wrote:max_power29 wrote:Most of the Cost of a bottle of water comes directly from oil. The plastic bottle itself is made from petrochemicals (oil and natural gas), then pumping and/or purification of the bottled water is energy intensive (uses oil directly or by using a substitutable form of energy, which drives up the price of all energy), and finally transporting the bottled water takes a lot of diesel because water is a very heavy/dense compound.....so in the end consuming processed water also consumes oil. It is difficult to say which resource (potable water or light sweet crude) is more important because in reality they are so intertwined.
I cant believe my eyes! So the only kind of potable water you know of comes in bottles?? How far has consumerism gone??

Novus wrote:Two words for you.
Life Straw
http://www.lifestraw.com/en/high/faq.asp
You can even drink sea water with it.
I would to buy several hundred for my survialist needs.


mommy22 wrote:How many cities around the world have public water fountains, where people can take bottles to refill them with clean water?


Tanada wrote:Define enough, if you can get 350 litre's of fresh clean water through a life straw before it ceases to be effective on sea water you would need two per person per year.

max_power29 wrote:....and in a lot of locations on this planet already, bottled water IS the only form of potable water


Raxozanne wrote:I just finished reading the first part of Plan B by Lester Brown and the sections on fossil aquifer depletion for agricultural use and retreat of glaciers that feed into some of the most important rivers in the world(ganges/yellow river) is very scary. 3 billion people are at risk according to him.

While the world is rightly moving to address the challenges presented by climate change and depleting supplies of fossil fuels, the same awareness and consensus does not exist when it comes to addressing our usage of water. Yet the harsh fact is that we will probably run out of water long before we run out of fuel.
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Most people equate water consumption with what they use in their homes and places of work, but the challenge facing the globe goes much, much further than that. The 2030 Water Resources Group...., estimates that global water requirements will grow by over 50% over the next 20 years. Such levels of usage will be 40% greater than what can currently be sustainably supplied.
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What most consumers might not be aware of is that agriculture accounts for 70% of global water usage today, and how the need to feed the growing population of the world will put an even greater strain on already scarce water resources.
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The challenge facing governments, businesses and - arguably - all of us, is how to close the gap in supply in a way that is both environmentally sustainable and economically viable. At the moment we are coping by 'borrowing' water supplies from non-replenishable aquifers or from water reserved for environmental needs, an approach which is clearly not a long-term solution.
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Efficiency lies at the heart of debate, just as with climate change. Yet while great strides have been made around carbon, the track record of water efficiency from both agriculture and industry does not inspire confidence: between 1990 and 2004 the annual rate of efficiency improvement in both sectors was approximately only 1%.
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There are measures such as no-till farming, improved drainage and utilisation of the best seeds that may even have a positive return for farmers


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