safety of water

waterborne disease

Waterborne disease caused by unsafe drinking water is the leading cause of death for children under the age of five in many nations and a cause of death and illness for many adults. About 88% of all diseases are caused by drinking unsafe water (Figure 1.1). Throughout the world, more than 14,000 people die every day from waterborne diseases, such as cholera, and many of the worlds hospital beds are occupied by patients suffering from a waterborne disease. Guinea worm is a serious problem in parts of Africa that is being eradicated. Learn what is being done to decrease the number of people suffering from this parasite at the video below. Click image to the left or use the URL below. URL:

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pollution

Many people in the world have no choice but to drink from the same polluted river where sewage is dumped. One- fifth of all people in the world, more than 1.1 billion people, do not have access to safe water for drinking, personal cleanliness, and domestic use. Unsafe drinking water carries many pathogens, or disease-causing biological agents such as infectious bacteria and parasites. Toxic chemicals and radiological hazards in water can also cause diseases.

scarcity of safe drinking water

The water that comes out of our faucets is safe because it has gone through a series of treatment and purification processes to remove contaminants. Those of us who are fortunate enough to always be able to get clean water from a tap in our home may have trouble imagining life in a country that cannot afford the technology to treat and purify water.

instructional diagrams

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questions

this sacred river india is sacred has affects 400 million people that depend on it.

a) the zambezi

-->  b) the ganges

c) the yarra

d) the volga

____ of all people in the world have access to safe water for drinking, personal cleanliness, and domestic use.

a) one-half

b) one-third

c) one-fourth

-->  d) one-fifth

pathogens are _____.

-->  a) infectious living things.

b) toxic chemicals.

c) radioactive materials.

d) all of the above

toxic bacteria can quickly become dangerous because __.

-->  a) their population increases exponentially.

b) they are tiny.

c) they stay in one place and infect everyone nearby.

d) all of these.

in many nations diseases carried in drinking water are the leading cause of death for children under the age of five.

-->  a) true

b) false

more than _____ people die every day from waterborne disease.

a) 10,000

b) 11,000

c) 12,000

-->  d) 14,000

which of these is an example of a waterborne disease?

a) small pox

b) the flu

-->  c) cholera

d) the cold

dracunculiasis spreads when people drink adult guinea worms.

a) true

-->  b) false

the solution to stopping the spread of waterborne diseases is always large, expensive public work projects.

a) true

-->  b) false

people in developed nations dont think much about waterborne diseases because our water is treated and is almost always safe to drink.

-->  a) true

b) false

diagram questions

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