jverne
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few people are aware of the water pollution problem, that might lead to a downfall of moder civilizations in the near future.
most people are concerned with global warming, but what about more regional effects that could cause widspread destruction in an economical and social sense. picture New york become uninhabitable in some years time?
some interesting reading for beginners:
http://en.wikipedia.org/wiki/Water_pollution
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some "interesting" data for US
http://asuwlink.uwyo.edu/~mthomas/
large numbers just for one industrial sector. do we even consume what we produce? guess not.
btw...agriculture is on of the largest polluters, not just in US but also across the world. But like many things, North America likes to exagerate.
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water usage comparison
http://www.environmentalindicators.com/htdocs/indicators/6wate.htm
way to go north america!
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https://www.cia.gov/cia/publications/factbook/geos/us.html
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some advice on conservation:
and many others...
http://www.epa.gov/OW/you/chap3.html
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of course there are laws prohibiting irrational use of water in most wester countries, but i couldn't find much info on how effective they are. in the agriculture link they mentioned a 20 Bgal/d decrease.
anyway i'd like to see what is your opinion on (irrational) water consumption. do you practice conservativsem or do you you daily spend 30min under the shower? i heared that an average californian household uses 400l/d of tap water. we may take into account the swimming pools which are common there.
in my country nobody gives a shit about water preservation.
my first guess would be that nobody here actually cares. but i dare say that water shortage might be worse than global warming in the short term.
most people are concerned with global warming, but what about more regional effects that could cause widspread destruction in an economical and social sense. picture New york become uninhabitable in some years time?
some interesting reading for beginners:
http://en.wikipedia.org/wiki/Water_pollution
------------------
some "interesting" data for US
Agricultural water use is probably the most important thing to mention in this class, because it directly has to do with sustainability. Approximately 99 Bgal/d were used in agriculture and irrigation in 1950. This accounts for the second highest amount of water withdrawals, next to industry. This number increased by a lot to 130 Bgal/d in 1970. This accounts for the large increase in acreage and thus irrigation water between 1950 and 1970. In 1980, this number increased to about 150 Bgal/d. The nine western regions accounted for 91% of all irrigation water withdrawn in 1980. 1990 came around, and this number actually decreased to 137 Bgal/d, which could be contributed to more micro irrigation systems, so there was a lot less wasted water. In 2000, the total amount of water stayed the same at 137 Bgal/d
http://asuwlink.uwyo.edu/~mthomas/
large numbers just for one industrial sector. do we even consume what we produce? guess not.
btw...agriculture is on of the largest polluters, not just in US but also across the world. But like many things, North America likes to exagerate.
-----------------------------
water usage comparison

http://www.environmentalindicators.com/htdocs/indicators/6wate.htm
way to go north america!
-------------
Environment - current issues:
air pollution resulting in acid rain in both the US and Canada; the US is the largest single emitter of carbon dioxide from the burning of fossil fuels; water pollution from runoff of pesticides and fertilizers; limited natural fresh water resources in much of the western part of the country require careful management; desertification
https://www.cia.gov/cia/publications/factbook/geos/us.html
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some advice on conservation:
Low-Flush Toilets. Residential demands account for about three-fourths of the total urban water demand. Indoor use accounts for roughly 60 percent of all residential use, and of this, toilets (at 3.5 gallons per flush) use nearly 40 percent. Toilets, showers, and faucets combined represent two-thirds of all indoor water use. More than 4.8 billion gallons of water is flushed down toilets each day in the United States. The average American uses about 9,000 gallons of water to flush 230 gallons of waste down the toilet per year (Jensen, 1991).
and many others...
http://www.epa.gov/OW/you/chap3.html
-----------------------------------------------------
of course there are laws prohibiting irrational use of water in most wester countries, but i couldn't find much info on how effective they are. in the agriculture link they mentioned a 20 Bgal/d decrease.
anyway i'd like to see what is your opinion on (irrational) water consumption. do you practice conservativsem or do you you daily spend 30min under the shower? i heared that an average californian household uses 400l/d of tap water. we may take into account the swimming pools which are common there.
in my country nobody gives a shit about water preservation.
my first guess would be that nobody here actually cares. but i dare say that water shortage might be worse than global warming in the short term.