water use n.
Download
Skip this Video
Loading SlideShow in 5 Seconds..
Water Use PowerPoint Presentation
Download Presentation
Water Use

Loading in 2 Seconds...

play fullscreen
1 / 8

Water Use - PowerPoint PPT Presentation


  • 120 Views
  • Uploaded on

Water Use. The need to reduce water use. Water. 97% of earth’s water is salt water, 3% is freshwater, 2/3 of which is frozen It IS a renewable resource but we are using it up faster than it is being replenished

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'Water Use' - brook


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
water use

Water Use

The need to reduce water use

water
Water
  • 97% of earth’s water is salt water, 3% is freshwater, 2/3 of which is frozen
  • It IS a renewable resource but we are using it up faster than it is being replenished
  • “Humans often increase storage capacity by constructing reservoirs and decrease it by draining wetlands. Humans often increase runoff quantities and velocities by paving areas and channelizing stream flow.”(wiki)
  • Water stress: “According to the World Business Council for Sustainable Development, it applies to situations where there is not enough water for all uses, whether agricultural, industrial or domestic” (wiki)
  • Climate change may cause an increase in the amount of available freshwater
water pollution
Water pollution
  • the discharge of raw sewage into natural waters, mainly in underdeveloped countries
  • Sewage, sludge, garbage, and even toxic pollutants are all dumped into the water
  • Agricultural runoff
  • Urban storm water runoff
  • Chemical wastes dumper by industries and the government
major water uses
Major Water Uses
  • Agriculture
    • 70% of freshwater worldwide is used for agriculture
    • Poor drainage and irrigation practices have led to waterlogging and salinization of approximately 10 percent of the world's irrigated lands (30 million hectares of the world's 255 million hectares of irrigated land) according to the UN Food and Agricultural Organization (FAO).
  • Industry
    • “In developing countries, 70% of industrial wastes are dumped untreated into waters where they pollute the usable water supply.” (ozh2o)
  • Energy
    • Hydropower

Global Uses of Water

Agriculture (mostly irrigation): 69% Industry: 23%

Domestic use (household, drinking water, sanitation): 8%

references
References
  • http://www.data360.org/graph_group.aspx?Graph_Group_Id=490
  • http://maps.grida.no/go/graphic/trends-in-global-water-use-by-sector
  • http://urbancartography.com/post/1003097231/51-trends-in-paranoia-water-withdrawal-01-an
  • http://en.wikipedia.org/wiki/Water_resources
  • http://www.certifiedbanger.co.uk/2008_03_01_archive.html
  • http://www.ozh2o.com/h2use.html